SpringMVC+Spring+mybatis+maven+tomcat+restful project creation details

 Idea SpringMVC+Spring+mybatis+maven+tomcat+restful project creation details

[ Reference: Idea SpringMVC+Spring+MyBatis+Maven+Tomcat adjustment

http://blog.csdn.net/qq_35116967/article/details/51504558]

1.     Create a project

File-New Project

Select Maven on the left, select Create from archetype on the top right , then select webapp in the list below , and click Next

 

 

 

 

Fill in the specified content in GroupId and ArtifactId , click Next

 

Just click Next

 

 

Enter the project name, Finish

 

Idea will automatically start downloading the packages it depends on and wait for it to finish. (If the download is slow, please add mirror to maven, see the post https://www.cnblogs.com/xiongxx/p/6057558.html)

 

 

2.     Project structure

 

 

 

When the project was just built, there were no such files, so manually create the missing folders (packages) by yourself

The project framework after creation:

 
 

 

3. Modify pom.xml to import dependency package plugin

Dependency packages need to be as follows:

spring framework
aspectj transaction
c3p0 data source
servlet/jsp api
junit4
mybatis
mybatis spring integration
postgresql driver

jstl

 

Complete pom.xml code listing:

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.elin4it.ssm</groupId>
  <artifactId>ssm</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>

  <name>ssm Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <build>
    <finalName>ssm</finalName>
    <plugins>
      <!--mybatis 逆向工程插件-->
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <verbose>true</verbose>
          <overwrite>true</overwrite>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <properties>
    <spring.version>4.1.1.RELEASE</spring.version>
  </properties>
  <dependencies>
    <!-- springframe start -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</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-oxm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${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-aop</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>
    <!-- springframe end -->
    <!--aspectj start-->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.6</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjrt</artifactId>
      <version>1.8.6</version>
    </dependency>
    <!--aspectj end-->
    <!--c3p0-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.1</version>
    </dependency>
    <!--servlet/jsp api start-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>
    <!--servlet/jsp api end-->
    <!--junit4-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!--mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.3.0</version>
    </dependency>
    <!--mybatis spring整合-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
    <dependency>
      <groupId>org.postgresql</groupId>
      <artifactId>postgresql</artifactId>
      <version>42.2.1</version>
    </dependency>
    <!--jstl-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
  </dependencies>
</project>

 

 

4.     使用mybatis逆向工程创建mapper接口和xml文件

students表结构(首先在postgresql库中创建名字叫ssm的database库，可以生成.sql文件将下面的代码复制进去，通过在这个库下导入sql文件建students表，或者直接在ssm库下的窗口里粘贴创建students表)

 

CREATE TABLE "public"."students" (
"sid" int4 NOT NULL,
"sname" varchar(255) COLLATE "default",
"gender" varchar(255) COLLATE "default",
"birthday" date,
"address" varchar(255) COLLATE "default",
CONSTRAINT "students_pkey" PRIMARY KEY ("sid")
)
WITH (OIDS=FALSE)
;
ALTER TABLE "public"."students" OWNER TO "postgres";

 

 

 

建成的表如下所示：

 

 

 

5.     在main/resources中创建generatorConfig.xml文件

 

generatorConfig.xml代码清单

 

<?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>
    <!--此处需要在本地有mysql连接所需jar包，写自己的jar包路径-->
    <classPathEntry location="D:\softwares\数据库工具\postgresql\jar\postgresql-9.1-901-1.jdbc4.jar"/>
    <context id="testTables" targetRuntime="MyBatis3" >
    <commentGenerator>
        <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
        <property name="suppressAllComments" value="true" />
    </commentGenerator>
    <!--</jdbcConnection> 修改成自己的用户密码-->
        <jdbcConnection driverClass="org.postgresql.Driver"
                        connectionURL="jdbc:postgresql://127.0.0.1:5432/cz?characterEncoding=UTF-8"
                        userId="postgres"
                        password="******">
        </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.elin4it.ssm.pojo"
                            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.elin4it.ssm.mapper"
                         targetProject="src\main\resources">
            <!-- 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.elin4it.ssm.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 tableName="students"></table>
        <!-- 有些表的字段需要指定java类型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>

 

 

点击idea右侧的maven选项卡，选择其中的mybatis-generator，点击顶部的绿色按钮运行

 

 

如果没有出错的话，应该会自动生成mapper接口文件、xml文件、pojo文件。

      

 

 

在resources/config中创建jdbc.properties，该文件用来描述mysql连接信息

jdbc.driver = org.postgresql.Driver
jdbc.url = jdbc:postgresql://127.0.0.1:5432/cz?characterEncoding=UTF-8
jdbc.username = postgres
jdbc.password = ******

6.     Mybatis-config文件

在resources/config/mybatis中创建mybatis-config.xml文件，该文件为Mybatis的配置文件，由于跟spring整合，所以一些基础配置文件都在spring中，在这里该文件中值需要写文件的框架，此处是系统自动生成的代码(mybatis文件夹右键->new->mybatis-config)：

<?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>
    <settings>
        <!-- Globally enables or disables any caches configured in any mapper under this configuration -->
        <setting name="cacheEnabled" value="true"/>
        <!-- Sets the number of seconds the driver will wait for a response from the database -->
        <setting name="defaultStatementTimeout" value="3000"/>
        <!-- Enables automatic mapping from classic database column names A_COLUMN to camel case classic Java property names aColumn -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!-- Allows JDBC support for generated keys. A compatible driver is required.
        This setting forces generated keys to be used if set to true,
         as some drivers deny compatibility but still work -->
        <setting name="useGeneratedKeys" value="true"/>
    </settings>
    <!-- Continue going here -->
</configuration>

 

 

7.     SpringMVC配置文件

在resources/config/spring中创建springmvc.xml文件    

 

<beans xmlns="http://www.springframework.org/schema/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"
       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"> 

    <!--自动扫描控制器-->
    <context:component-scan base-package="com.elin4it.ssm"/>
    <!--视图渲染-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--控制器映射器和控制器适配器-->
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

 

 

8.     Spring IOC注入和事件控制

在resources/config/spring中创建applicationContext-dao.xml、application-service.xml、applicationContext-transaction.xml文件

 

applicationContext-dao.xml代码：

 

<?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:context="http://www.springframework.org/schema/context"
       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">

    <!--获取数据库配置文件-->
    <context:property-placeholder location="classpath:config/jdbc.properties"/>
    <!--设置数据源c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxPoolSize" value="50"/>
        <property name="minPoolSize" value="2"/>
        <property name="maxIdleTime" value="60"/>
    </bean>
    <!--sqlsessionFactory bean-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:config/mybatis/mybatis-config.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--自动扫描mapper接口，并注入sqlsession-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.elin4it.ssm.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSession"/>
    </bean>

</beans> 

application-service.xml代码：

 

<?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:context="http://www.springframework.org/schema/context"
       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">

    <!--扫描service-->
    <context:component-scan base-package="com.elin4it.ssm.service"/>
</beans>  

applicationContext-transaction.xml 代码：

 

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">


    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
        <tx:attributes>
            <tx:method name="find*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="add*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.elinzhou.ixxs.service.*.*(..))"/>
    </aop:config>
</beans>

 

9.     web.xml文件

修改web.xml文件内容

 

 

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <!--设置spring 配置文件的位置-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:config/spring/applicationContext-*.xml</param-value>
  </context-param>
  <!--解决POST乱码问题-->
  <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>
  <!--配置spring listener-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--springmvc前端控制器配置-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:config/spring/springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

10.     Service接口与实现

创建一个简单的service，只有一个查看所有用户列表的功能

UserService.java

 

package com.elin4it.ssm.service;

import com.elin4it.ssm.pojo.Students;
/**
 * Created by lgs on 2015/7/11.
 */
public interface UserService {
    /**
     * 查找所有用户
     * @return
     * @throws Exception
     */
    Students findUser()throws Exception;
}  

实现类UserServiceImpl.java

 

 

package com.elin4it.ssm.service;

import com.elin4it.ssm.mapper.StudentsMapper;
import com.elin4it.ssm.pojo.Students;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
 * Created by lgs on 2015/7/11. 
 */
@Service
public class UserServiceImpl implements UserService {
    //User接口 此处注入UserMapper时需要在UserMapper接口上添加<span style="font-family: Arial, Helvetica, sans-serif;">@Component进行依赖注入</span>  
    @Autowired
    private StudentsMapper userMapper;
    public Students findUser() throws Exception {
        //调用mapper类中的selectByExample方法，如果传入类型为null，则表示无条件查找  
        Students users = userMapper.selectByPrimaryKey(2);
        return users;
    }
}  

11.     Controller

UserController.java 代码：

package com.elin4it.ssm.controller;

import com.elin4it.ssm.pojo.Students;
import com.elin4it.ssm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by Administrator on 2018/3/13.
 */
@Controller
@RequestMapping("/user")
public class UserController {

    //service类
    @Autowired
    private UserService userService;

    /**
     * 查找所用用户控制器方法
     * @return
     * @throws Exception
     */
    @ResponseBody
    @RequestMapping("/findUser")
    public Students getStudents()throws Exception{
        Students students = userService.findUser();
        return students;
    }
}

12.     配置tomcat

打开面板 Run -- 》Edit Configurations，点+号，选择 Tomcat server --> Local -->输入tomcat名称和配置信息后，点击“Deployment”标签页，点击下面的+号，在弹出的列表中选择“Artifact”, 弹出提示框, 选择要deployment的project  

编辑 Application context的名称，点击OK就可完成Tomcat配置。

点击下面的绿色箭头或右上角的tomcat启动箭头，即可启动tomcat部署的project。  

启动后会自动跳转到浏览器可以通过http://localhost:8080//user/findUser访问跑起来！

 

启动后出现错误：

 

 

13.     解决方法：配置json转换器

pom.xml添加依赖:

 

<!--json-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.8.5</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.8.5</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.8.5</version>
</dependency>

输出结果如下：

 

14.     日期格式需要修正

解决：在springmvc.xml中添加

<mvc:annotation-driven>  
    <!-- 处理responseBody 里面日期类型 -->  
        <mvc:message-converters>  
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
                <property name="objectMapper">  
                    <bean class="com.fasterxml.jackson.databind.ObjectMapper">  
                        <property name="dateFormat">  
                            <bean class="java.text.SimpleDateFormat">  
                                <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss" />  
                            </bean>  
                        </property>  
                    </bean>  
                </property>  
            </bean>  
        </mvc:message-converters>  
    </mvc:annotation-driven>

 

输出结果如下：

 15.     mybatis 打印sql

 

在mybatis.cfg.xml中增加如下配置

 

 

<settings>中增加

 

<setting name="logImpl" value="STDOUT_LOGGING" />

 

可在控制台查看效果：

 

 

【完】