01分布式框架-Dubbox和工程搭建

前面省略，直奔主题

3.Dubbox框架

3.1 Dubbox简介

Dubbox 是一个分布式服务框架，其前身是阿里巴巴开源项目Dubbo ，被国内电商及互联网项目中使用，后期阿里巴巴停止了该项目的维护，当当网便在Dubbo基础上进行优化，并继续维护，为了与原有的Dubbo区分，故将其命名为Dubbox。

Dubbox 致力于提供高性能和透明化的RPC远程服务调用方案，以及SOA服务治理方案。简单的说，dubbox就是个服务框架，如果没有分布式的需求，其实是不需要用的，只有在分布式的时候，才有dubbox这样的分布式服务框架的需求，并且本质上是个服务调用的东东，说白了就是个远程服务调用的分布式框架。

节点角色说明：

· Provider: 暴露服务的服务提供方。

· Consumer: 调用远程服务的服务消费方。

· Registry: 服务注册与发现的注册中心。

· Monitor: 统计服务的调用次数和调用时间的监控中心。

· Container: 服务运行容器。

调用关系说明：

· 0. 服务容器负责启动，加载，运行服务提供者。

· 1. 服务提供者在启动时，向注册中心注册自己提供的服务。

· 2. 服务消费者在启动时，向注册中心订阅自己所需的服务。

· 3. 注册中心返回服务提供者地址列表给消费者，如果有变更，注册中心将基于长连接推

送变更数据给消费者。

· 4. 服务消费者，从提供者地址列表中，基于软负载均衡算法，选一台提供者进行调用，

如果调用失败，再选另一台调用。

· 5. 服务消费者和提供者，在内存中累计调用次数和调用时间，定时每分钟发送一次统计

数据到监控中心。

 

配置linux镜像：安装VM后双击此文件挂起品优购服务器

导入的虚拟机必须设置 ip 为 192.168.25.168 才可以使用 FastDFS(后面的课程会
用)；如果虚拟机不是 25 网段，需要手动设置网段，

 

 

打开虚拟机

帐号：root，密码：itcast

 

3.2注册中心Zookeeper

 

3.2.1 Zookeeper 介绍

 

官方推荐使用 zookeeper 注册中心。注册中心负责服务地址的注册与查找，相当于目录服务，服务提供者和消费者只在启动时与注册中心交互，注册中心不转发请求，压力较小。

 

Zookeeper 是 Apacahe Hadoop 的子项目，是一个树型的目录服务，支持变更推送，适合作为Dubbox 服务的注册中心，工业强度较高，可用于生产环境。

3.2.2 Zookeeper 在Linux系统的安装

安装步骤：

第一步：安装 jdk（此步省略，我给大家提供的镜像已经安装好JDK）

第二步：把 zookeeper 的压缩包（资源\配套软件\dubbox\zookeeper-3.4.6.tar.gz）上传到 linux 系统。

第三步：解压缩压缩包

tar -zxvf zookeeper-3.4.6.tar.gz

第四步：进入 zookeeper-3.4.6 目录，创建 data 文件夹，放zookeeper注册数据。

mkdir data

第五步：进入conf目录 ，把 zoo_sample.cfg 改名为 zoo.cfg

cd conf mv zoo_sample.cfg zoo.cfg

第六步：打开zoo.cfg ,  修改 data 属性：dataDir=/root/zookeeper-3.4.6/data

vim zoo.cfg

点击i 进入插入模式

点击ESC 然后 :wq保存并退出

3.2.3 Zookeeper 服务启动

进入bin目录，启动服务输入命令

cd ..

cd bin

./zkServer.sh start

输出以下内容表示启动成功

关闭服务输入命令

./zkServer.sh stop

输出以下提示信息

查看状态：

./zkServer.sh status

如果启动状态，提示

如果未启动状态，提示：

3.5入门小Demo

3.5.1服务提供者开发

开发步骤：

（1）创建Maven工程（WAR）dubboxdemo-service  ，在pom.xml中引入依赖

Pom配置文件

<!-- 集中定义依赖版本号 --> <properties>     <junit.version>4.12</junit.version>     <spring.version>4.3.10.RELEASE</spring.version>     <spring.security.version>4.2.3.RELEASE</spring.security.version>     <mybatis.version>3.4.5</mybatis.version>     <mybatis.spring.version>1.3.1</mybatis.spring.version>     <mysql.version>5.1.32</mysql.version>     <druid.version>1.1.5</druid.version>     <pagehelper.version>4.1.4</pagehelper.version>     <mapper.version>3.5.0</mapper.version>     <dubbo.version>2.6.0</dubbo.version>     <slf4j.version>1.7.12</slf4j.version>     <javax.persistence.version>1.0</javax.persistence.version>     <fastjson.version>1.2.44</fastjson.version>     <zookeeper.version>3.4.9</zookeeper.version>     <zkclient.version>0.1</zkclient.version>     <jedis.version>2.9.0</jedis.version>     <spring.data.redis.version>1.8.9.RELEASE</spring.data.redis.version>     <servlet.api.version>2.5</servlet.api.version>     <commons.fileupload.version>1.3.1</commons.fileupload.version>     <fastdfs.client.version>1.25</fastdfs.client.version>     <freemarker.version>2.3.23</freemarker.version>     <activemq.version>5.14.3</activemq.version>     <cas.client.core.version>3.4.1</cas.client.core.version>     <spring.data.solr.version>1.5.5.RELEASE</spring.data.solr.version>     <httpclient.version>4.5.3</httpclient.version>     <wxpay.sdk.version>0.0.3</wxpay.sdk.version>     <httpcore.version>4.4.8</httpcore.version>     <javassist.version>3.12.1.GA</javassist.version>     <commons.codec.version>1.11</commons.codec.version>     <dom4j.version>1.6.1</dom4j.version>     <xml.apis.version>2.0.2</xml.apis.version>     <kaptcha.version>2.3.2</kaptcha.version> </properties>     <dependencyManagement>         <dependencies>             <dependency>                 <groupId>junit</groupId>                 <artifactId>junit</artifactId>                 <version>${junit.version}</version>             </dependency>             <!-- Spring -->             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-beans</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-context</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-web</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-aspects</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-jdbc</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-webmvc</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-jms</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-context-support</artifactId>                 <version>${spring.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework</groupId>                 <artifactId>spring-test</artifactId>                 <version>${spring.version}</version>             </dependency>             <!-- Mybatis -->             <dependency>                 <groupId>org.mybatis</groupId>                 <artifactId>mybatis</artifactId>                 <version>${mybatis.version}</version>             </dependency>             <dependency>                 <groupId>org.mybatis</groupId>                 <artifactId>mybatis-spring</artifactId>                 <version>${mybatis.spring.version}</version>             </dependency>             <!-- 日志 -->             <dependency>                 <groupId>org.slf4j</groupId>                 <artifactId>slf4j-log4j12</artifactId>                 <version>${slf4j.version}</version>             </dependency>             <!-- dubbo相关 -->             <dependency>                 <groupId>com.alibaba</groupId>                 <artifactId>dubbo</artifactId>                 <version>${dubbo.version}</version>             </dependency>             <dependency>                 <groupId>org.apache.zookeeper</groupId>                 <artifactId>zookeeper</artifactId>                 <version>${zookeeper.version}</version>             </dependency>             <dependency>                 <groupId>com.github.sgroschupf</groupId>                 <artifactId>zkclient</artifactId>                 <version>${zkclient.version}</version>             </dependency>             <!-- json的解析 -->             <dependency>                 <groupId>com.alibaba</groupId>                 <artifactId>fastjson</artifactId>                 <version>${fastjson.version}</version>             </dependency>             <dependency>                 <groupId>javax.servlet</groupId>                 <artifactId>servlet-api</artifactId>                 <version>${servlet.api.version}</version>                 <scope>provided</scope>             </dependency>             <!-- mybaits分页助手 -->             <dependency>                 <groupId>com.github.pagehelper</groupId>                 <artifactId>pagehelper</artifactId>                 <version>${pagehelper.version}</version>             </dependency>             <!-- 通用 Mapper -->             <!-- https://mvnrepository.com/artifact/tk.mybatis/mapper -->             <dependency>                 <groupId>tk.mybatis</groupId>                 <artifactId>mapper</artifactId>                 <version>3.2.1</version>             </dependency>             <!-- MySql -->             <dependency>                 <groupId>mysql</groupId>                 <artifactId>mysql-connector-java</artifactId>                 <version>${mysql.version}</version>             </dependency>             <!-- 连接池 -->             <dependency>                 <groupId>com.alibaba</groupId>                 <artifactId>druid</artifactId>                 <version>${druid.version}</version>             </dependency>             <!-- https://mvnrepository.com/artifact/javax.persistence/persistence-api -->             <dependency>                 <groupId>javax.persistence</groupId>                 <artifactId>persistence-api</artifactId>                 <version>1.0</version>             </dependency>             <!-- redis缓存 -->             <dependency>                 <groupId>redis.clients</groupId>                 <artifactId>jedis</artifactId>                 <version>2.9.0</version>             </dependency>             <dependency>                 <groupId>org.springframework.data</groupId>                 <artifactId>spring-data-redis</artifactId>                 <version>${spring.data.redis.version}</version>             </dependency>             <!-- 文件上传组件 -->             <dependency>                 <groupId>commons-fileupload</groupId>                 <artifactId>commons-fileupload</artifactId>                 <version>${commons.fileupload.version}</version>             </dependency>             <!--fastDFS客户端工具类包 -->             <dependency>                 <groupId>com.github.tobato</groupId>                 <artifactId>fastdfs-client</artifactId>                 <version>1.26.6</version>             </dependency>             <!--freemarker-->             <dependency>                 <groupId>org.freemarker</groupId>                 <artifactId>freemarker</artifactId>                 <version>${freemarker.version}</version>             </dependency>             <!-- ActiveMQ -->             <dependency>                 <groupId>org.apache.activemq</groupId>                 <artifactId>activemq-client</artifactId>                 <version>${activemq.version}</version>             </dependency>             <!-- 身份验证 -->             <dependency>                 <groupId>org.springframework.security</groupId>                 <artifactId>spring-security-web</artifactId>                 <version>${spring.security.version}</version>             </dependency>             <dependency>                 <groupId>org.springframework.security</groupId>                 <artifactId>spring-security-config</artifactId>                 <version>${spring.security.version}</version>             </dependency>             <!-- cas -->             <dependency>                 <groupId>org.springframework.security</groupId>                 <artifactId>spring-security-cas</artifactId>                 <version>${spring.security.version}</version>             </dependency>             <dependency>                 <groupId>org.jasig.cas.client</groupId>                 <artifactId>cas-client-core</artifactId>                 <version>${cas.client.core.version}</version>                 <!-- 排除 log4j包冲突 -->                 <exclusions>                     <exclusion>                         <groupId>org.slf4j</groupId>                         <artifactId>log4j-over-slf4j</artifactId>                     </exclusion>                 </exclusions>             </dependency>             <!-- solr相关 -->             <dependency>                 <groupId>org.springframework.data</groupId>                 <artifactId>spring-data-solr</artifactId>                 <version>${spring.data.solr.version}</version>             </dependency>             <dependency>                 <groupId>org.apache.httpcomponents</groupId>                 <artifactId>httpclient</artifactId>                 <version>${httpclient.version}</version>             </dependency>             <!-- 微信支付 sdk -->             <dependency>                 <groupId>com.github.wxpay</groupId>                 <artifactId>wxpay-sdk</artifactId>                 <version>${wxpay.sdk.version}</version>             </dependency>             <!-- 验证码工具类包 -->             <dependency>                 <groupId>com.github.penggle</groupId>                 <artifactId>kaptcha</artifactId>                 <version>${kaptcha.version}</version>                 <exclusions>                     <exclusion>                         <groupId>javax.servlet</groupId>                         <artifactId>javax.servlet-api</artifactId>                     </exclusion>                 </exclusions>             </dependency>             <!-- 加密解密 -->             <dependency>                 <groupId>commons-codec</groupId>                 <artifactId>commons-codec</artifactId>                 <version>${commons.codec.version}</version>             </dependency>             <dependency>                 <groupId>javassist</groupId>                 <artifactId>javassist</artifactId>                 <version>${javassist.version}</version>             </dependency>             <dependency>                 <groupId>dom4j</groupId>                 <artifactId>dom4j</artifactId>                 <version>${dom4j.version}</version>             </dependency>             <dependency>                 <groupId>xml-apis</groupId>                 <artifactId>xml-apis</artifactId>                 <version>${xml.apis.version}</version>             </dependency>         </dependencies>     </dependencyManagement> <build>     <plugins>         <!-- java编译插件 -->         <plugin>             <groupId>org.apache.maven.plugins</groupId>             <artifactId>maven-compiler-plugin</artifactId>             <version>3.6.0</version>             <configuration>                 <source>1.8</source>                 <target>1.8</target>                 <encoding>UTF-8</encoding>             </configuration>         </plugin>     </plugins>     <pluginManagement>         <plugins>             <!-- tomcat插件 -->             <plugin>                 <groupId>org.apache.tomcat.maven</groupId>                 <artifactId>tomcat7-maven-plugin</artifactId>                 <version>2.2</version>             </plugin>         </plugins>     </pluginManagement> </build>

（2）在工程的webapps下创建WEB-INF文件夹，创建web.xml

<web-app xmlns="http://java.sun.com/xml/ns/javaee"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee                       http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"          version="3.0"          metadata-complete="false">   <!-- 加载spring容器 -->   <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>classpath:applicationContext*.xml</param-value>   </context-param>   <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener> </web-app>

添加：

（3）创建业务接口

创建包cn.gdut.dubbodemo.service，用于存放业务接口，创建接口

package cn.gdut.dubbodemo.service; public interface UserService {    public String getName();    }

（4）创建业务实现类

创建包cn.gdut.dubbodemo.service.impl，用于存放业务实现类。创建业务实现类：

package cn.gdut.dubbodemo.service.impl; import cn.gdut.dubbodemo.service.UserService; import com.alibaba.dubbo.config.annotation.Service; @Service public class UserServiceImpl implements UserService {    public String getName() {            return "itcast";    } }

注意：Service注解与原来不同，需要引入com.alibaba包下的，不然服务不能注册到注册中心

（5）编写配置文件

在src/main/resources下创建applicationContext-service.xml ,内容如下：

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"        xmlns:context="http://www.springframework.org/schema/context"        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd         http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">     <dubbo:application name="dubbodemo-service"/>     <dubbo:registry address="zookeeper://192.168.25.131:2181"/>     <dubbo:annotation package="cn.gdut.dubbodemo.service.impl" /> </beans>

注意：dubbo:annotation用于扫描@Service注解。

（6）测试运行

 

 

3.5.2服务消费者开发

开发步骤：

（1）创建Maven工程（WAR）dubboWeb ，在pom.xml引入依赖 ，同“dubboService”工程。区别就是把tomcat插件的运行端口改为8082 。

（2）在webapps目录下创建WEB-INF 目录，并创建web.xml

<web-app xmlns="http://java.sun.com/xml/ns/javaee"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee                       http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"          version="3.0"          metadata-complete="false">   <!-- 解决post乱码 -->   <filter>     <filter-name>CharacterEncodingFilter</filter-name>     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>     <init-param>       <param-name>encoding</param-name>       <param-value>utf-8</param-value>     </init-param>     <init-param>       <param-name>forceEncoding</param-name>       <param-value>true</param-value>     </init-param>   </filter>   <filter-mapping>     <filter-name>CharacterEncodingFilter</filter-name>     <url-pattern>/*</url-pattern>   </filter-mapping>   <servlet>     <servlet-name>springmvc</servlet-name>     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>     <!-- 指定加载的配置文件 ，通过参数contextConfigLocation加载-->     <init-param>       <param-name>contextConfigLocation</param-name>       <param-value>classpath:applicationContext-web.xml</param-value>     </init-param>   </servlet>   <servlet-mapping>     <servlet-name>springmvc</servlet-name>     <url-pattern>*.do</url-pattern>   </servlet-mapping> </web-app>

（3）拷贝业务接口

将“dubboService”工程的cn.gdut.dubbodemo.service 包以及下面的接口拷贝至此工程。

注意实现类 impl包不要拷贝

（4）编写Controller

package cn.gdut.dubbodemo.controller; import cn.gdut.dubbodemo.service.UserService; import com.alibaba.dubbo.config.annotation.Reference; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller @RequestMapping("/user") public class UserController {    @Reference    private UserService userService;    @RequestMapping("/showName")    @ResponseBody    public String showName(){       return userService.getName();    }      }

（5）编写spring配置文件

在src/main/resources下创建applicationContext-web.xml  

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"        xmlns:context="http://www.springframework.org/schema/context"        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd         http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">     <!--SpringMvc的转换器，可以把返回值转换成字符串-->     <mvc:annotation-driven >         <mvc:message-converters register-defaults="false">             <bean class="org.springframework.http.converter.StringHttpMessageConverter">                 <constructor-arg value="UTF-8" />             </bean>         </mvc:message-converters>     </mvc:annotation-driven>     <!-- 引用dubbo 服务 -->     <dubbo:application name="dubboxdemo-web" />     <dubbo:registry address="zookeeper://192.168.25.131:2181"/>     <dubbo:annotation package="cn.gdut.dubbodemo.controller" /> </beans>

（6）测试运行

在浏览器输入http://localhost:8082/user/showName.do，查看浏览器输出结果

3.6管理中心的部署

我们在开发时，需要知道注册中心都注册了哪些服务，以便我们开发和测试。我们可以通过部署一个管理中心来实现。其实管理中心就是一个web应用，部署到tomcat即可。

3.6.1管理端安装

（1）编译源码，得到war包

给大家下发的资源中有个dubbox-master.zip  ，这个是dubbox的源码，我们可以使用maven命令编译源码得到“管理端”的war包

将此压缩包解压，在命令符下进入dubbo-admin目录 ，输入maven命令

mvn package -Dmaven.skip.test=true

如果你看到如下信息，就说明成功了

 

（2）进入target文件夹，你会看到一个dubbo-admin-2.8.4.war ，改名为dubbo-admin.war 把它和tomcat传到linux里面：

 

 

3.在linux服务器上解压tomcat安装包,  将此dubbo-admin.war 移动到linux服务器的tomcat的webapps下。启动tomcat后会自动解压dubbo-admin.war 。

 

把dubbo-admin.war移动到webapps下

 

启动tomcat

 

 

 

（4）如果你部署在zookeeper同一台主机并且端口是默认的2181，则无需修改任何配置。如果不是在一台主机上或端口被修改，需要修改WEB-INF下的dubbo.properties  ，修改如下配置：

dubbo.registry.address=zookeeper://127.0.0.1:2181

修改后重新启动tomcat

3.6.2管理端使用

（1）打开浏览器，输入http://192.168.25.131:8080/dubbo-admin/ ,登录用户名和密码均为root 进入首页。 (192.168.25.131)是我部署的linux主机地址。

（3）启动服务提供者和消费者工程，可以观察提供者和“消费者”列表

4.品优购-框架搭建

4.1工程结构分析与设计

工程说明：

pinyougou-parent 聚合工程

pinyougou-pojo 通用实体类层

pinyougou-dao 通用数据访问层

pinyougou-xxxxx-interface  某服务层接口

pinyougou-xxxxx-service   某服务层实现

pinyougou-xxxxx-web     某web工程  

4.2创建数据库表

执行资源文件夹中pinyougou-db.sql

IDEA 开发环境设置

先创建一个空的工程用来组织其它模块

4.3搭建框架

最终完整的工程结构如下：

4.3.1父工程

品优购聚合父工程；包括后续开发的所有品优购聚合子工程。主要功能是进行依赖、插件统一管理。

   创建Maven工程pinyougou-parent （POM） ，groupId 为com.pinyougou ,artifactId 为pinyougou-parent ,  在pom.xml中添加锁定版本信息dependencyManagement与pluginManagement，详见“资源/配置文件/第一天搭建/父工程/pom.xml”。

以下模块均继承自此父工程

添加依赖（此处的依赖用于集中的定义版本号，后续的子模块不用在定义版本号。目的是统一所有模块依赖的版本号，管理起来比较方便）下面链接有详细的介绍

https://www.cnblogs.com/feibazhf/p/7886617.html

4.3.2通用实体类模块

实体类工程；统一放置品优购的所有数据库实体类或者其它模型

创建通用实体类模块pinyougou-pojo

加依赖

<!--jar包--> <packaging>jar</packaging> <dependencies>     <!--JPA支持-->     <dependency>         <groupId>javax.persistence</groupId>         <artifactId>persistence-api</artifactId>     </dependency>     <!--依赖common-->     <dependency>         <groupId>com.pinyougou</groupId>         <artifactId>pinyougou-common</artifactId>         <version>1.0-SNAPSHOT</version>     </dependency>     <!--spring-data-solr-->     <dependency>         <groupId>org.springframework.data</groupId>         <artifactId>spring-data-solr</artifactId>         <!--编译期需要-->         <scope>provided</scope>     </dependency> </dependencies>

 

4.3.3通用数据访问模块

创建通用数据访问模块pinyougou-dao.添加Mybatis和pinyougou-pojo依赖 创建步骤和上面一样

<!--jar包--> <packaging>jar</packaging> <properties>     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> </properties> <dependencies>     <!--依赖Pojo-->     <dependency>         <artifactId>pinyougou-model</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>     </dependency>     <!--spring相关-->     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-aop</artifactId>     </dependency>     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-jdbc</artifactId>     </dependency>     <!-- MySql -->     <dependency>         <groupId>mysql</groupId>         <artifactId>mysql-connector-java</artifactId>     </dependency>     <!--数据连接池-->     <dependency>         <groupId>com.alibaba</groupId>         <artifactId>druid</artifactId>     </dependency>     <!-- mybatis-spring 整合 -->     <dependency>         <groupId>org.mybatis</groupId>         <artifactId>mybatis-spring</artifactId>     </dependency>     <!--通用Mapper-->     <dependency>         <groupId>tk.mybatis</groupId>         <artifactId>mapper</artifactId>     </dependency>     <!--mybatis-->     <dependency>         <groupId>org.mybatis</groupId>         <artifactId>mybatis</artifactId>     </dependency>     <!--分页工具包-->     <dependency>         <groupId>com.github.pagehelper</groupId>         <artifactId>pagehelper</artifactId>     </dependency>     <!-- log start -->     <dependency>         <groupId>log4j</groupId>         <artifactId>log4j</artifactId>     </dependency>     <dependency>         <groupId>org.slf4j</groupId>         <artifactId>slf4j-api</artifactId>     </dependency>     <dependency>         <groupId>org.slf4j</groupId>         <artifactId>slf4j-log4j12</artifactId>     </dependency>     <!-- log end --> </dependencies>

将学习资料中的：“配置文件/第一天搭建/数据访问层工程”下的配置文件拷贝到pinyougou-dao工程

4.3.4通用工具类模块

创建通用工具类模块pinyougou-common

Pom

<?xml version="1.0" encoding="UTF-8"?> <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xmlns="http://maven.apache.org/POM/4.0.0"          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <parent>         <artifactId>pinyougou-parent</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>     </parent>     <modelVersion>4.0.0</modelVersion>     <artifactId>pinyougou-common</artifactId>     <build>         <plugins>             <plugin>                 <groupId>org.apache.maven.plugins</groupId>                 <artifactId>maven-compiler-plugin</artifactId>                 <version>3.6.0</version>                 <configuration>                     <source>1.8</source>                     <target>1.8</target>                     <encoding>UTF-8</encoding>                 </configuration>             </plugin>             <plugin>                 <groupId>org.mybatis.generator</groupId>                 <artifactId>mybatis-generator-maven-plugin</artifactId>                 <version>1.3.2</version>                 <configuration>                     <verbose>true</verbose>                     <overwrite>false</overwrite>                 </configuration>                 <dependencies>                     <dependency>                         <groupId>mysql</groupId>                         <artifactId>mysql-connector-java</artifactId>                         <version>5.1.21</version>                     </dependency>                     <!--通用Mapper-->                     <dependency>                         <groupId>tk.mybatis</groupId>                         <artifactId>mapper</artifactId>                         <version>${mapper.version}</version>                     </dependency>                 </dependencies>             </plugin>         </plugins>     </build>     <dependencies>         <!--fastDFS-->         <dependency>             <groupId>org.csource.fastdfs</groupId>             <artifactId>fastdfs</artifactId>         </dependency>         <!-- 缓存 -->         <dependency>             <groupId>redis.clients</groupId>             <artifactId>jedis</artifactId>         </dependency>         <dependency>             <groupId>org.apache.commons</groupId>             <artifactId>commons-pool2</artifactId>         </dependency>         <!--spring-data-redis-->         <dependency>             <groupId>org.springframework.data</groupId>             <artifactId>spring-data-redis</artifactId>         </dependency>         <!--servlet-->         <dependency>             <groupId>javax.servlet</groupId>             <artifactId>javax.servlet-api</artifactId>             <scope>provided</scope>         </dependency>         <!--微信支付-->         <dependency>             <groupId>com.github.wxpay</groupId>             <artifactId>wxpay-sdk</artifactId>             <version>0.0.3</version>         </dependency>         <!--httpclient支持-->         <dependency>             <groupId>org.apache.httpcomponents</groupId>             <artifactId>httpclient</artifactId>             <version>4.5.3</version>         </dependency>         <dependency>             <groupId>javax.persistence</groupId>             <artifactId>persistence-api</artifactId>         </dependency>         <dependency>             <groupId>tk.mybatis</groupId>             <artifactId>mapper</artifactId>         </dependency>         <dependency>             <groupId>org.mybatis</groupId>             <artifactId>mybatis</artifactId>         </dependency>     </dependencies> </project>

逆向工程配置文件generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration         PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"         "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration>     <context id="testTables" targetRuntime="MyBatis3">         <!-- 生成的pojo，将implements Serializable-->         <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>         <!--通用Mapper所需参数-->         <plugin type="tk.mybatis.mapper.generator.MapperPlugin">             <property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>             <property name="forceAnnotation" value="true"/>         </plugin>         <commentGenerator>             <!-- 是否去除自动生成的注释 true：是 ： false:否 -->             <property name="suppressAllComments" value="true"/>         </commentGenerator>         <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->         <jdbcConnection driverClass="com.mysql.jdbc.Driver"                         connectionURL="jdbc:mysql://localhost:3381/pinyougoudb" userId="root"                         password="1234">         </jdbcConnection>         <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和             NUMERIC 类型解析为java.math.BigDecimal -->         <javaTypeResolver>             <property name="forceBigDecimals" value="false"/>         </javaTypeResolver>         <!-- targetProject:生成PO类的位置 -->         <javaModelGenerator targetPackage="com.pinyougou.model"                             targetProject=".\src\main\java">             <!-- enableSubPackages:是否让schema作为包的后缀 -->             <property name="enableSubPackages" value="false"/>             <!-- 从数据库返回的值被清理前后的空格 -->             <property name="trimStrings" value="true"/>         </javaModelGenerator>         <!-- targetProject:mapper映射文件生成的位置 -->         <sqlMapGenerator targetPackage="com.pinyougou.mapper"                          targetProject=".\src\main\java">             <!-- enableSubPackages:是否让schema作为包的后缀 -->             <property name="enableSubPackages" value="false"/>         </sqlMapGenerator>         <!-- targetPackage：mapper接口生成的位置 -->         <javaClientGenerator type="XMLMAPPER"                              targetPackage="com.pinyougou.mapper"                              targetProject=".\src\main\java">             <!-- enableSubPackages:是否让schema作为包的后缀 -->             <property name="enableSubPackages" value="false"/>         </javaClientGenerator>         <!-- 指定数据库表 -->         <table domainObjectName="Address" tableName="tb_address"></table>         <table domainObjectName="Areas" tableName="tb_areas"></table>         <table domainObjectName="Brand" tableName="tb_brand"></table>         <table domainObjectName="Cities" tableName="tb_cities"></table>         <table domainObjectName="Content" tableName="tb_content"></table>         <table domainObjectName="ContentCategory" tableName="tb_content_category"></table>         <table domainObjectName="FreightTemplate" tableName="tb_freight_template"></table>         <table domainObjectName="Goods" tableName="tb_goods"></table>         <table domainObjectName="GoodsDesc" tableName="tb_goods_desc"></table>         <table domainObjectName="Item" tableName="tb_item"></table>         <table domainObjectName="ItemCat" tableName="tb_item_cat"></table>         <table domainObjectName="Order" tableName="tb_order"></table>         <table domainObjectName="OrderItem" tableName="tb_order_item"></table>         <table domainObjectName="PayLog" tableName="tb_pay_log"></table>         <table domainObjectName="Provinces" tableName="tb_provinces"></table>         <table domainObjectName="SeckillGoods" tableName="tb_seckill_goods"></table>         <table domainObjectName="SeckillOrder" tableName="tb_seckill_order"></table>         <table domainObjectName="Seller" tableName="tb_seller"></table>         <table domainObjectName="Specification" tableName="tb_specification"></table>         <table domainObjectName="SpecificationOption" tableName="tb_specification_option"></table>         <table domainObjectName="TypeTemplate" tableName="tb_type_template"></table>         <table domainObjectName="User" tableName="tb_user"></table>     </context> </generatorConfiguration>

点击生成pojo和mapper备用

4.3.5商家商品服务接口模块

创建maven（jar）模块pinyougou-sellergoods-interface  , pom.xml添加依赖

<?xml version="1.0" encoding="UTF-8"?> <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xmlns="http://maven.apache.org/POM/4.0.0"          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <parent>         <artifactId>pinyougou-parent</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>     </parent>     <modelVersion>4.0.0</modelVersion>     <artifactId>pinyougou-sellergoods-interface</artifactId>     <!--打jar包-->     <packaging>jar</packaging>     <dependencies>         <!--依赖model-->         <dependency>             <artifactId>pinyougou-model</artifactId>             <groupId>com.pinyougou</groupId>             <version>1.0-SNAPSHOT</version>         </dependency>         <!--分页工具包-->         <dependency>             <groupId>com.github.pagehelper</groupId>             <artifactId>pagehelper</artifactId>         </dependency>     </dependencies> </project>

4.3.6商家商品服务模块

创建模块pinyougou-sellergoods-service ，

创建成功后将此普通的Java工程转换为web工程,需要安装JBLJavaToWeb插件，见下面链接

https://blog.csdn.net/qq_33442160/article/details/81876257

安装好后进行如下操作

pom.xml引入依赖

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <parent>      <artifactId>pinyougou-parent</artifactId>       <groupId>com.pinyougou</groupId>       <version>1.0-SNAPSHOT</version>    </parent>     <modelVersion>4.0.0</modelVersion>     <artifactId>pinyougou-sellergoods-service</artifactId>     <!--war包-->     <packaging>war</packaging>     <dependencies>      <!--依赖Mapper-->       <dependency>        <artifactId>pinyougou-mapper</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>      </dependency>       <!--依赖interface-->       <dependency>        <artifactId>pinyougou-sellergoods-interface</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>      </dependency>       <!-- spring -->       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-jms</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-web</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-core</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-context</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-aop</artifactId>      </dependency>       <dependency>        <groupId>org.aspectj</groupId>         <artifactId>aspectjrt</artifactId>      </dependency>       <dependency>        <groupId>org.aspectj</groupId>         <artifactId>aspectjweaver</artifactId>      </dependency>       <!-- Apache工具组件 -->       <dependency>        <groupId>org.apache.commons</groupId>         <artifactId>commons-lang3</artifactId>      </dependency>       <!--dubbo-->       <dependency>        <groupId>com.alibaba</groupId>         <artifactId>dubbo</artifactId>      </dependency>       <dependency>        <groupId>org.apache.zookeeper</groupId>         <artifactId>zookeeper</artifactId>         <exclusions>          <exclusion>            <artifactId>slf4j-api</artifactId>             <groupId>org.slf4j</groupId>          </exclusion>        </exclusions>      </dependency>       <dependency>        <groupId>com.101tec</groupId>         <artifactId>zkclient</artifactId>      </dependency>       <dependency>        <groupId>org.apache.curator</groupId>         <artifactId>curator-framework</artifactId>         <exclusions>          <exclusion>            <artifactId>zookeeper</artifactId>             <groupId>org.apache.zookeeper</groupId>          </exclusion>           <exclusion>            <artifactId>slf4j-api</artifactId>             <groupId>org.slf4j</groupId>          </exclusion>        </exclusions>      </dependency>       <!-- fastjson处理工具包 -->       <dependency>        <groupId>com.alibaba</groupId>         <artifactId>fastjson</artifactId>      </dependency>       <dependency>        <groupId>junit</groupId>         <artifactId>junit</artifactId>      </dependency>    </dependencies>     <!--<pluginRepositories>-->     <!--<pluginRepository>-->     <!--<id>alfresco-public</id>-->     <!--<url>https://artifacts.alfresco.com/nexus/content/groups/public</url>-->     <!--</pluginRepository>-->     <!--<pluginRepository>-->     <!--<id>alfresco-public-snapshots</id>-->     <!--<url>https://artifacts.alfresco.com/nexus/content/groups/public-snapshots</url>-->     <!--<snapshots>-->     <!--<enabled>true</enabled>-->     <!--<updatePolicy>daily</updatePolicy>-->     <!--</snapshots>-->     <!--</pluginRepository>-->     <!--<pluginRepository>-->     <!--<id>beardedgeeks-releases</id>-->     <!--<url>http://beardedgeeks.googlecode.com/svn/repository/releases</url>-->     <!--</pluginRepository>-->     <!--</pluginRepositories>-->     <build>      <plugins>        <plugin>          <groupId>org.apache.tomcat.maven</groupId>           <artifactId>tomcat7-maven-plugin</artifactId>           <version>2.2</version>           <configuration>            <port>18081</port>             <path>/</path>          </configuration>        </plugin>         <plugin>          <groupId>org.apache.maven.plugins</groupId>           <artifactId>maven-compiler-plugin</artifactId>           <version>3.6.1</version>           <configuration>            <source>6</source>             <target>6</target>          </configuration>        </plugin>         <!--<plugin>-->         <!--<groupId>org.apache.tomcat.maven</groupId>-->         <!--<artifactId>tomcat8-maven-plugin</artifactId>-->         <!--<version>3.0-r1655215</version>-->         <!--<configuration>-->         <!--<port>18081</port>-->         <!--<path>/</path>-->         <!--</configuration>-->         <!--</plugin>-->     </plugins>    </build>  </project>

在webapps下创建WEB-INF/web.xml ，加载spring容器

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns="http://xmlns.jcp.org/xml/ns/javaee"        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"        version="3.1">    <!--spring配置文件 改为xml配置-->    <!--<context-param>-->    <!--<param-name>contextConfigLocation</param-name>-->    <!--<param-value>classpath:spring/spring-annoation.xml</param-value>-->    <!--</context-param>-->    <context-param>       <param-name>contextConfigLocation</param-name>       <param-value>classpath:spring/spring.xml</param-value>    </context-param>    <!--配置监听-->    <listener>       <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener> </web-app>

创建包com.pinyougou.sellergoods.service.impl

在src/main/resources下创建spring.xml  

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:tx="http://www.springframework.org/schema/tx"        xmlns:aop="http://www.springframework.org/schema/aop"        xmlns="http://www.springframework.org/schema/beans"        xsi:schemaLocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx.xsd         http://www.springframework.org/schema/aop         http://www.springframework.org/schema/aop/spring-aop.xsd">     <!-- 事务传播特性配置 -->     <tx:advice id="txAdvice" transaction-manager="txManager">         <!-- the transactional semantics... -->         <tx:attributes>             <tx:method name="add*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <tx:method name="save*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <tx:method name="insert*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <tx:method name="update*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <tx:method name="modify*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <tx:method name="delete*" propagation="REQUIRED" isolation="DEFAULT"                        rollback-for="java.lang.Exception"/>             <!-- 查询方法 -->             <tx:method name="query*" read-only="true"/>             <tx:method name="select*" read-only="true"/>             <tx:method name="find*" read-only="true"/>         </tx:attributes>     </tx:advice>     <!-- 配置事务管理器 -->     <bean id="txManager"           class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource" ref="dataSource"/>     </bean>     <!-- 开启AOP注解 -->     <aop:aspectj-autoproxy/>     <!-- 声明式事务AOP配置 -->     <aop:config>         <!--配置AOP切点-->         <aop:pointcut expression="execution(* com.pinyougou.sellergoods.service.impl.*.*(..))" id="tranpointcut"/>         <!-- 事务控制 -->         <aop:advisor advice-ref="txAdvice" pointcut-ref="tranpointcut"/>     </aop:config>     <!--引入外部配置-->     <import resource="spring-dubbo.xml" />     <import resource="spring-mybatis.xml"/> <import resource="spring-annoation.xml"/> </beans>

spring-annoation.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:tx="http://www.springframework.org/schema/tx"        xmlns="http://www.springframework.org/schema/beans"        xsi:schemaLocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx.xsd">     <!-- 配置事务管理器 -->     <bean id="txManager"           class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource" ref="dataSource"/>     </bean>     <!--开启声明式注解驱动-->     <tx:annotation-driven transaction-manager="txManager"></tx:annotation-driven>     <!--引入外部配置-->     <import resource="spring-mybatis.xml"/> </beans>

spring-dubbo.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"        xmlns="http://www.springframework.org/schema/beans"        xsi:schemaLocation="         http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans.xsd         http://code.alibabatech.com/schema/dubbo         http://code.alibabatech.com/schema/dubbo/dubbo.xsd">     <!--4、注册应用名字-->     <dubbo:application name="pinyougou-sellergoods-service"/>     <!--1、指定注册地址-->     <dubbo:registry address="zookeeper://192.168.25.135:2181"/>     <!--2、暴露外部访问接口的端口和协议-->     <dubbo:protocol name="dubbo" port="20884"/>     <!--3、Dubbo包扫描-->     <dubbo:annotation package="com.pinyougou.sellergoods.service.impl"/> </beans>

Dubbo的配置可以参考下面

https://blog.csdn.net/fuyuwei2015/article/details/72836075

4.3.7运营商管理后台

创建maven（war）模块pinyougou-manager-web ，

  pom.xml引入依赖  

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <parent>      <artifactId>pinyougou-parent</artifactId>       <groupId>com.pinyougou</groupId>       <version>1.0-SNAPSHOT</version>    </parent>     <modelVersion>4.0.0</modelVersion>     <artifactId>pinyougou-manager-web</artifactId>     <!--war包-->     <packaging>war</packaging>     <dependencies>      <!--依赖interface-->       <dependency>        <artifactId>pinyougou-sellergoods-interface</artifactId>         <groupId>com.pinyougou</groupId>         <version>1.0-SNAPSHOT</version>      </dependency>       <dependency>        <groupId>com.pinyougou</groupId>         <artifactId>pinyougou-common</artifactId>         <version>1.0-SNAPSHOT</version>      </dependency>       <!--搜索服务-->       <!-- SpringMVC -->       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-webmvc</artifactId>      </dependency>       <!-- spring -->       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-core</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-context</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-aop</artifactId>      </dependency>       <!-- Apache工具组件 -->       <dependency>        <groupId>org.apache.commons</groupId>         <artifactId>commons-lang3</artifactId>      </dependency>       <!--FastJSON-->       <dependency>        <groupId>com.alibaba</groupId>         <artifactId>fastjson</artifactId>      </dependency>       <!--文件上传组件-->       <dependency>        <groupId>commons-fileupload</groupId>         <artifactId>commons-fileupload</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-jms</artifactId>      </dependency>       <dependency>        <groupId>org.springframework</groupId>         <artifactId>spring-test</artifactId>         <version>4.3.12.RELEASE</version>      </dependency>       <!--ActiveMQ-->       <dependency>        <groupId>org.apache.activemq</groupId>         <artifactId>activemq-client</artifactId>      </dependency>       <!--dubbo-->       <dependency>        <groupId>com.alibaba</groupId>         <artifactId>dubbo</artifactId>      </dependency>       <dependency>        <groupId>org.apache.zookeeper</groupId>         <artifactId>zookeeper</artifactId>         <exclusions>          <exclusion>            <artifactId>slf4j-api</artifactId>             <groupId>org.slf4j</groupId>          </exclusion>        </exclusions>      </dependency>       <!-- Test dependencies -->       <dependency>        <groupId>junit</groupId>         <artifactId>junit</artifactId>         <version>4.12</version>         <scope>test</scope>      </dependency>       <dependency>        <groupId>com.101tec</groupId>         <artifactId>zkclient</artifactId>      </dependency>       <dependency>        <groupId>org.apache.curator</groupId>         <artifactId>curator-framework</artifactId>         <exclusions>          <exclusion>            <artifactId>zookeeper</artifactId>             <groupId>org.apache.zookeeper</groupId>          </exclusion>           <exclusion>            <artifactId>slf4j-api</artifactId>             <groupId>org.slf4j</groupId>          </exclusion>        </exclusions>      </dependency>       <dependency>        <groupId>org.springframework.security</groupId>         <artifactId>spring-security-web</artifactId>      </dependency>       <dependency>        <groupId>org.springframework.security</groupId>         <artifactId>spring-security-config</artifactId>      </dependency>     <dependency>       <groupId>javax.servlet</groupId>       <artifactId>servlet-api</artifactId>       <version>2.5</version>       <scope>provided</scope>     </dependency>   </dependencies>     <build>      <plugins>        <plugin>          <groupId>org.apache.tomcat.maven</groupId>           <artifactId>tomcat7-maven-plugin</artifactId>           <version>2.2</version>           <configuration>            <port>18082</port>             <path>/</path>          </configuration>        </plugin>      </plugins>    </build>  </project>

在webapps下创建WEB-INF/web.xml ，加载spring容器

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xmlns="http://xmlns.jcp.org/xml/ns/javaee"          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee          http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"          version="3.1">     <!-- 编码过滤器 -->     <filter>         <filter-name>characterEncoding</filter-name>         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>         <init-param>             <param-name>encoding</param-name>             <param-value>UTF-8</param-value>         </init-param>         <init-param>             <param-name>forceEncoding</param-name>             <param-value>true</param-value>         </init-param>     </filter>     <filter-mapping>         <filter-name>characterEncoding</filter-name>         <url-pattern>/*</url-pattern>     </filter-mapping>     <!--//End 编码过滤器 -->     <!-- SpringMVC -->     <servlet>         <servlet-name>springmvc</servlet-name>         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>         <init-param>             <param-name>contextConfigLocation</param-name>             <param-value>classpath:spring/springmvc.xml</param-value>         </init-param>         <load-on-startup>1</load-on-startup>     </servlet>     <servlet-mapping>         <servlet-name>springmvc</servlet-name>         <url-pattern>*.shtml</url-pattern>     </servlet-mapping>     <!-- //End SpringMVC -->     <!--指定spring配置文件-->     <context-param>         <param-name>contextConfigLocation</param-name>         <param-value>classpath:spring/*.xml</param-value>     </context-param>     <!--spring监听-->     <listener>         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>     </listener>     <!--委托过滤器:springSecurityFilterChain-->     <filter>         <filter-name>springSecurityFilterChain</filter-name>         <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>     </filter>     <filter-mapping>         <filter-name>springSecurityFilterChain</filter-name>         <url-pattern>/*</url-pattern>     </filter-mapping>     <mime-mapping>         <extension>htm</extension>         <mime-type>text/html;charset=utf-8</mime-type>     </mime-mapping>     <mime-mapping>         <extension>html</extension>         <mime-type>text/html;charset=utf-8</mime-type>     </mime-mapping> </web-app>

创建包com.pinyougou.manager.controller

在src/main/resources下创建spring/springmvc.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:context="http://www.springframework.org/schema/context"        xmlns:mvc="http://www.springframework.org/schema/mvc"        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"        xmlns="http://www.springframework.org/schema/beans"        xsi:schemaLocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context.xsd         http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc.xsd         http://code.alibabatech.com/schema/dubbo         http://code.alibabatech.com/schema/dubbo/dubbo.xsd">     <!--dubbo配置-->     <!--注册应用-->     <dubbo:application name="pinyougou-manager-web"/>     <!--设置客户端请求超时时间-->     <dubbo:consumer timeout="30000"/>     <!--注册中心-->     <dubbo:registry address="zookeeper://192.168.25.135:2181"/>     <!--包扫描-->     <dubbo:annotation package="com.pinyougou.manager.controller"/>     <!--注解驱动-->     <mvc:annotation-driven>         <!--使用FastJSON-->         <mvc:message-converters>             <bean class="org.springframework.http.converter.StringHttpMessageConverter">                 <constructor-arg value="UTF-8"/>             </bean>             <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">                 <property name="supportedMediaTypes">                     <list>                         <value>text/html;charset=UTF-8</value>                         <value>application/json;charset=UTF-8</value>                     </list>                 </property>                 <property name="fastJsonConfig">                     <bean class="com.alibaba.fastjson.support.config.FastJsonConfig">                         <property name="serializerFeatures">                             <array>                                 <value>WriteMapNullValue</value>                                 <value>WriteNullStringAsEmpty</value>                             </array>                         </property>                         <property name="charset" value="UTF-8"/>                     </bean>                 </property>             </bean>         </mvc:message-converters>     </mvc:annotation-driven>     <!-- 包扫描 -->     <context:component-scan base-package="com.pinyougou.manager"/>     <!--加载文件资源-->     <context:property-placeholder location="classpath:config/sys_config.properties"/>     <!--文件上传解析器-->     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">         <property name="defaultEncoding" value="UTF-8"></property>         <!-- 设定文件上传的最大值5MB，5*1024*1024 -->         <property name="maxUploadSize" value="5242880"></property>     </bean> </beans>

4.3.8商家管理后台

构建web模块pinyougou-shop-web  与运营商管理后台的构建方式类似。Pom也类似，区别：

（1）定义tomcat的启动端口为9102

（2）springmvc.xml

<!-- 引用dubbo 服务 --> <dubbo:application name="pinyougou-shop-web" /> <dubbo:registry address="zookeeper://192.168.25.131:2181"/> <dubbo:annotation package="com.pinyougou.shop.controller" />

把生成的代码拷贝到下面两个工程

然后 所有的pojo类，除了Example类，其它的全部实现序列化接口（代码生成器已经帮助生成了，不用我们生成了）

https://blog.csdn.net/weixin_41917449/article/details/81168234

修改每个实体类，让其实现Serializable接口。因为需要不同网络间相互传数据： windows和linux

简单地说，就是可以将一个对象(标志对象的类型)及其状态转换为字节码，保存起来（可以保存在数据库，内存，文件等）,然后可以在适当的时候再将其状态恢复(也就是反序列化)。serialization 不但可以在本机做，而且可以经由网络操作。它自动屏蔽了操作系统的差异，字节顺序等。比如，在 Windows 平台生成一个对象并序列化之，然后通过网络传到一台 Unix 机器上，然后可以在这台Unix机器上正确地重构（deserialization）这个对象。 不必关心数据在不同机器上如何表示，也不必关心字节的顺序或者其他任何细节。

注意修改完毕要重新install pojo工程，否则不生效。以后修改完代码，都要重新install一下工程

5.品牌列表-后端代码

5.1需求分析

完成品牌管理的后端代码，在浏览器可查询品牌的数据（json格式）

5.2数据库表

tb_brand  品牌表

字段	类型	长度	含义
Id	Bigint		主键
Name	Varchar	255	品牌名称
First_char	Varchar	1	品牌首字母

 

5.3后端代码

5.2.1 服务层接口

在pinyougou-sellergoods-interface 工程创建BrandService接口

package com.pinyougou.sellergoods.service; import java.util.List; import com.pinyougou.pojo.TbBrand; /**  * 品牌服务层接口  * @author Administrator  *  */ public interface BrandService { /**  * 返回全部列表  * @return  */ public List<TbBrand> findAll(); }

5.2.2 服务实现类

在pinyougou-sellergoods-service 工程创建BrandServiceImpl类

package com.pinyougou.sellergoods.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import com.alibaba.dubbo.config.annotation.Service; import com.pinyougou.mapper.TbBrandMapper; import com.pinyougou.pojo.TbBrand; import com.pinyougou.sellergoods.service.BrandService; @Service public class BrandServiceImpl implements BrandService { @Autowired private TbBrandMapper brandMapper; //需要添加数据访问层依赖 @Override public List<TbBrand> findAll() { return brandMapper.selectByExample(null); } }

5.2.3 控制层代码

在pinyougou-manager-web工程创建com.pinyougou.manager.controller包，包下创建BrandController类

package com.pinyougou.manager.controller; import java.util.List; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import com.alibaba.dubbo.config.annotation.Reference; import com.pinyougou.pojo.TbBrand; import com.pinyougou.sellergoods.service.BrandService; /**  * 品牌controller  * @author Administrator  */ @RestController  @RequestMapping("/brand") public class BrandController { @Reference private BrandService brandService; /**  * 返回全部列表  * @return  */ @RequestMapping("/findAll") public List<TbBrand> findAll(){ return brandService.findAll(); } }

5.4测试

启动pinyougou-sellergoods-service  

启动pinyougou-manager-web

地址栏输入http://localhost:9101/brand/findAll.do

出错的地方

1 spring的版本和其它jar包的版本有冲突报错java.lang.NoSuchMethodError: org.springframework.beans.factory.annotation.InjectionMetadata.

https://www.iteye.com/problems/77783

2 PageHelper connot be cast to org.apache.ibatis.plugin.Interceptor

PageHelper 的版本和配置文件的配置方式不匹配

https://blog.csdn.net/wgp15732622312/article/details/78640237

3.出现了这个问题耽误了两天！！！！！！！！！！！！！！！！

原因

classpath和classpath*区别： https://www.cnblogs.com/EasonJim/p/6709314.html

classpath：只会到你的class路径中查找找文件。

classpath*：不仅包含class路径，还包括jar文件中（class路径）进行查找。

注意： 用classpath*:需要遍历所有的classpath，所以加载速度是很慢的；因此，在规划的时候，应该尽可能规划好资源文件所在的路径，尽量避免使用classpath*。

classpath*的使用：

当项目中有多个classpath路径，并同时加载多个classpath路径下（此种情况多数不会遇到）的文件，*就发挥了作用，如果不加*，则表示仅仅加载第一个classpath路径。

 

此外，web的spingmvc配置文件中要添加消息转换器

 

<mvc:annotation-driven>

<mvc:message-converters>

<bean class="org.springframework.http.converter.StringHttpMessageConverter" />

<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />

</mvc:message-converters>

</mvc:annotation-driven>

否则

 

不能返回ArrayList

最后

可以看到浏览器输出了json数据。

附录：常见错误

1.在注册中心找不到对应的服务

java.lang.IllegalStateException: Failed to check the status of the service com.pinyougou.sellergoods.service.BrandService. No provider available for the service com.pinyougou.sellergoods.service.BrandService from the url zookeeper://192.168.25.129:2181/com.alibaba.dubbo.registry.RegistryService?application=pinyougou-manager-web&dubbo=2.8.4&interface=com.pinyougou.sellergoods.service.BrandService&methods=update,get,delete,selectOptionList,add,getListByPage&pid=3980&revision=0.0.1-SNAPSHOT&side=consumer×tamp=1501146823396 to the consumer 172.16.17.14 use dubbo version 2.8.4

这种错误是服务层代码没有成功注册到注册中心导致，请检查一下你的服务层代码是否添加了@service注解，并且该注解的包一定是com.alibaba.dubbo.config.annotation包，不是org.springframework.stereotype.Service，这个地方极容易出错。另外还有一个原因就是你的服务层工程由于某些原因没有正常启动，也无法注册到注册中心里。

2.无法连接到注册中心

org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 5000 org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:876) org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:98) org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:92) org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:80) com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperClient.<init>(ZkclientZookeeperClient.java:26)

请检查IP与端口是否填写正确，检查注册中心是否正常启动