SOA搭建
项目SOA架构
e3-parent:父工程,打包方式pom,管理jar包的版本号。
| 项目中所有工程都应该继承父工程。
|--e3-common:通用的工具类通用的pojo。打包方式jar
|--e3-manager:服务层工程。聚合工程。Pom工程
|--e3-manager-dao:打包方式jar
|--e3-manager-pojo:打包方式jar
|--e3-manager-interface:打包方式jar
|--e3-manager-service:打包方式:war
|--e3-manager-web:表现层工程。打包方式war
- 使用maven管理工程。Jar包的管理。工程之间的依赖管理。自动打包后台工程搭建分析
- Maven的常见打包方式:jar、war、pom
- Pom工程一般都是父工程,管理jar包的版本、maven插件的版本、统一的依赖管理。聚合工程。
与传统架构区别:
- e3-manager-service:打包方式:war
- e3-manager-web:不再是e3-manager的模块了,而是父工程为e3-parent的Maven Project
工程搭建
e3-parent(POM工程)(相同)
- 管理jar包的版本
- maven插件的版本
- 统一的依赖管理
pom文件:同IDEA构建原生项目e3-parent/pom.xml
e3-common(打包方式jar)(相同)
- 继承e3-parent
- 通用的pojo
- 通用的工具类
pom文件:同IDEA构建原生项目e3-common/pom.xml
e3-manager(打包方式pom)
聚合工程
- 继承e3-parent
- 依赖e3-common
区别
e3-manager-web:不再是e3-manager的模块了
pom文件:
<?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>e3-parent</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>../e3-parent/pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager</artifactId>
<packaging>pom</packaging>
<modules>
<module>e3-manager-pojo</module>
<module>e3-manager-dao</module>
<module>e3-manager-interface</module>
<module>e3-manager-service</module>
</modules>
<dependencies>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-common</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
<!-- 配置tomcat插件 -->
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<port>8080</port>
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
上面都是 :Maven Project , 下面的都是 :Maven Module 。
e3-manager-pojo(打包方式jar)(相同)
是一个maven模块
- 继承e3-manager
<?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>e3-manager</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager-pojo</artifactId>
</project>
5、e3-manager-dao(Maven模块,打包方式jar)(相同)
Maven模块
- 继承e3-manager
- 依赖mybatis的相关jar包
- 依赖e3-manager-pojo
pom文件:
<?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>e3-manager</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager-dao</artifactId>
<dependencies>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-manager-pojo</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- 添加对mybatis的依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
<dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
</dependencies>
<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 -->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
</project>
e3-manager-interface(打包方式jar)(相同)
Maven模块
- 继承e3-manager
- 依赖e3-manager-pojo
pom:
<?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>e3-manager</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager-interface</artifactId>
<dependencies>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-manager-pojo</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
e3-manager-service(打包方式war)
Maven模块
- 继承e3-manager
- 依赖e3-manager-dao
- 依赖e3-manager-interface
- 依赖spring
pom文件
<?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>e3-manager</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager-service</artifactId>
<!-- 打包方式变为war -->
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-manager-dao</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-manager-interface</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- spring的依赖 -->
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
</dependencies>
</project>
e3-manager-web(打包方式war)
表现层
- 继承e3-manager
- 依赖e3-manager-interface
- 依赖JSP相关jar包
- 是maven project
- 依赖spring
注意:如果依赖service,就又把sevice打包,放到lib下面了,就没有实现服务分开的目的
pom文件
<?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>e3-manager</artifactId>
<groupId>cn.e3mall</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>e3-manager-web</artifactId>
<!-- 打包方式war -->
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>cn.e3mall</groupId>
<artifactId>e3-manager-interface</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- JSP相关 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- spring的依赖 -->
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
</dependencies>
</project>
Service 和web两个工程需要补全目录结构
补全目录结构 :
- 由于打包方式为war需要补全目录结构,需要在webapp目录下添加WEB-INF目录,和web.xml文件。
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>e3-manager-web</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
添加欢迎页 :
index.jsp:
<%--
Created by IntelliJ IDEA.
User: ys951
Date: 2018/11/29
Time: 20:12
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>First Test</title>
</head>
<body>
<h1>Hello World</h1>
</body>
</html>
SSM整合测试
数据库
数据库使用 mysql 数据库,要求 5.5 以上版本。
- 在 mysql 数据库中创建数据库 e3mall ;
- 将创建数据库的脚本——e3mall.sql , 导入到 e3mall 中 。
Mybatis逆向工程——单表查询用
导入逆向工程 :
使用mybatis官方提供的mybatis-generator生成pojo、mapper接口及映射文件。
并且将pojo放到e3-manager-pojo工程中。
将mapper接口及映射文件放到e3-manager-dao工程中。
整合思路
由于pojo、interface、service、dao的都会打包到web的lib下面,故配置文件放到web下面 。
Service下面的整合
Dao整合
创建Mybatis的配置文件
SqlMapConfig.xml
不需要配置任何内容 ,需要有文件头 , 文件必须存在。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>
Spring整合mybatis
mybatis整合spring,通过由spring创建数据库连接池,spring管理SqlSessionFactory、mapper代理对象。需要mybatis和spring的整合包。
applicationContext-dao.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<!-- 数据库连接池 -->
<!-- 加载配置文件 -->
<context:property-placeholder location="classpath:conf/db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="driverClassName" value="${jdbc.driver}" />
<property name="maxActive" value="10" />
<property name="minIdle" value="5" />
</bean>
<!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据库连接池 -->
<property name="dataSource" ref="dataSource" />
<!-- 加载mybatis的全局配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
</bean>
<!-- 配置一个包扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.e3mall.mapper" />
</bean>
</beans>
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://192.168.25.11:3306/e3mall?characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456
备注:
Druid是目前最好的数据库连接池,在功能、性能、扩展性方面,都超过其他数据库连接池,包括DBCP、C3P0、BoneCP、Proxool、JBoss DataSource。
Druid已经在阿里巴巴部署了超过600个应用,经过多年多生产环境大规模部署的严苛考验。
Spring和springMVC自动整合,不需要我们手动整合。
Service整合
管理Service
所有的service实现类都放到spring容器中管理 , 并由spring管理事务。
applicationContext-service.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<!-- 配置包扫描器 -->
<context:component-scan base-package="cn.e3mall.service"/>
</beans>
事务管理
applicationContext-trans.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* cn.e3mall.service.*.*(..))" />
</aop:config>
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>e3-manager-service</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 加载spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
发布服务
在e3-manager-service工程中添加dubbo依赖的jar包 。
<!-- dubbo相关 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
</dependency>
Dubbo,上面的排除了spring和netty的依赖:因为我们已经约束了版本。
由spring容器初始化服务。》》 故在applicationContext-service.xml中配置
在spring的配置文件applicationContext-service.xml中添加dubbo的约束(手动配),然后使用dubbo:service发布服务。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<context:component-scan base-package="cn.e3mall.service"></context:component-scan>
<!-- 使用dubbo发布服务 -->
<!-- 提供方应用信息,用于计算依赖关系 -->
<dubbo:application name="e3-manager" />
<dubbo:registry protocol="zookeeper"
address="192.168.25.154:2181,192.168.25.154:2182,192.168.25.154:2183" />
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="cn.e3mall.service.ItemService" ref="itemServiceImpl" />
</beans>
address改为 192.168.25.11:2181
上面写的是集群,2181是zookeeper的端口
再有服务,20880端口要改
报错是由于缺少dubbo的约束。
表现层整合
Springmvc框架,由springmvc管理controller。
Springmvc的三大组件。
springmvc.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:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<!-- 配置扫描包,扫描所有Controller -->
<context:component-scan base-package="cn.e3mall.controller" />
<!-- 配置注解驱动 -->
<mvc:annotation-driven />
<!-- 配置视图解析器 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>e3-manager</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- springmvc的前端控制器 -->
<servlet>
<servlet-name>e3-manager</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation不是必须的, 如果不配置contextConfigLocation, springmvc的配置文件默认在:WEB-INF/servlet的name+"-servlet.xml" -->
<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>e3-manager</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
在e3-manager-web的pom.xml中添加dubbo的依赖
<!-- dubbo相关 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
</dependency>
修改springmvc.xml,在springmvc的配置文件中添加服务的引用。
<?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-4.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.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-4.2.xsd">
<context:component-scan base-package="cn.e3mall.controller" />
<mvc:annotation-driven />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 引用dubbo服务 -->
<dubbo:application name="e3-manager-web"/>
<dubbo:registry protocol="zookeeper" address="192.168.25.11:2181"/>
<dubbo:reference interface="cn.e3mall.service.ItemService" id="itemService" />
</beans>
在e3-manager-web工程pom中添加tomcat插件配置
<build>
<plugins>
<!-- 配置Tomcat插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<path>/</path>
<port>8081</port>
</configuration>
</plugin>
</plugins>
</build>
整合测试
需求
根据商品id查询商品信息,返回json数据。
Dao层
由于是单表查询可以使用逆向工程生成的代码。
Service层
- 参数:商品id
- 返回值:TbItem
- 业务逻辑:根据商品id查询商品信息。
public interface ItemService {
TbItem getItemById(Long itemId);
}
/**
* 商品管理Service
*/
@Service
public class ItemServiceImpl implements ItemService {
@Autowired
private TbItemMapper tbItemMapper;
@Override
public TbItem getItemById(Long itemId) {
// // 方法一:根据主键查询
// TbItem tbItem = tbItemMapper.selectByPrimaryKey(itemId);
// return tbItem;
//方法二:条件查询
TbItemExample example = new TbItemExample();
TbItemExample.Criteria criteria = example.createCriteria();
//设置查询条件
criteria.andIdEqualTo(itemId);
//执行查询
List<TbItem> list = tbItemMapper.selectByExample(example);
if (list != null && list.size() > 0){
return list.get(0);
}
return list.get(0);
}
}
Controller
/**
* 商品管理Controller
*/
@Controller
public class ItemController {
@Autowired
private ItemService itemService;
@RequestMapping("/item/{itemId}")
@ResponseBody
public TbItem getItemById(@PathVariable Long itemId){
TbItem tbItem = itemService.getItemById(itemId);
return tbItem;
}
}
测试
将e3-parent 、e3-common 、e3-manager 安装到本地仓库 ,
先启动 e3-manager , 再启动 e3-manager-web 。
启动哪个工程,卡死了 ,
方法 : 将log4j加入到对应工程的resources下面,就可以看到异常了 。
出现异常的几种情况:数据库连不上,注册中心连不上,逆向工程生产的mapper错误。
3】启动web
4】浏览器输入localhost:8081 出现index.jsp的内容
5】对象经过网络传输,实体类要实现序列化的接口。
重新安装到本地仓库——》启动manager——》启动web——》测试
浏览器测试:
localhost:8081/item/536563
将pojo都实现序列化 。
解决mapper绑定异常
此异常的原因是由于mapper接口编译后在同一个目录下没有找到mapper映射文件而出现的。由于maven工程在默认情况下src/main/java目录下的mapper文件是不发布到target目录下的。
解决方法:
在e3-manager-dao工程的pom文件中添加如下内容:
<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 -->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
测试: