小白教程：详解intellij idea搭建SSM框架(spring+maven+mybatis+mysql+junit)、mybatis反向生成代码（下）

<?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_3_0.xsd" version="3.0">
  <display-name>helloworld</display-name>
  <!-- 配置编码方式-->
  <filter>
    <filter-name>encodingFilter</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>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!-- 配置springmvc的前端控制器 指向spring-mvc.xml 程序在启动的时候就加载springmvc 可以接受所有请求 load-on-startup：表示启动容器时初始化该Servlet； -->
  <servlet>
    <servlet-name>springServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 可以自定义servlet.xml配置文件的位置和名称， 默认为WEB-INF目录下，名称为[<servlet-name>]-servlet.xml，如spring-servlet.xml -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value> classpath:spring/applicationContext.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <!-- 将前端URL请求和后台处理方法controller建立对应关系-->
  <servlet-mapping>
    <servlet-name>springServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- Spring配置 -->
  <listener>
    <listener-class>
      org.springframework.web.context.ContextLoaderListener
    </listener-class>
  </listener>
  <!-- 取消对某一类文件的拦截-->
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.md</url-pattern>
  </servlet-mapping>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value> classpath:spring/applicationContext.xml</param-value>
  </context-param>
  <!-- 欢迎页面-->
  <welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
  </welcome-file-list>
  <!--404错误展示页面，可自行配置-->
  <!--<error-page>-->
  <!--<error-code>404</error-code>-->
  <!--<location>/WEB-INF/views/404.jsp</location>-->
  <!--</error-page>-->
  <!--设置session失效时间为30分钟 -->
  <session-config>
    <session-timeout>600</session-timeout>
  </session-config>
</web-app>

<!-- 配置会话工厂SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:sqlmap/*Mapper.xml"/>
        <property name="typeAliasesPackage" value="com.springmvc.entity" />
    </bean>
    <!-- 在spring容器中配置mapper的扫描器产生的动态代理对象在spring的容器中自动注册，bean的id就是mapper类名（首字母小写）-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定扫描包的路径，就是mapper接口的路径，多个包中间以 半角逗号隔开   -->
        <property name="basePackage" value="com.springmvc.dao"/>
        <!-- 配置sqlSessionFactoryBeanName -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

<?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>
    <!--导入属性配置 -->
    <properties resource="generator.properties"/>
    <!--本地的mysql-connector-java.jar的位置，因为连接数据库是需要驱动的，maven已经帮我们下好了jar包.-->
    <classPathEntry
            location="F:\apache-maven\mavanJar\mysql\mysql-connector-java\5.1.29\mysql-connector-java-5.1.29.jar" />
    <context id="context1">
        <!-- 注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" /><!-- 是否取消注释 -->
            <property name="suppressDate" value="true" /> <!-- 是否生成注释代时间戳 -->
        </commentGenerator>
        <jdbcConnection driverClass="${driver}"
                        connectionURL="${url}"
                        userId="${username}"
                        password="${password}" />
        <!-- 类型转换 -->
        <javaTypeResolver>
            <!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） -->
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
        <javaModelGenerator targetPackage="${modelPackage}"
                            targetProject="${modelProject}" />
        <sqlMapGenerator targetPackage="${sqlPackage}" targetProject="${sqlProject}" />
        <javaClientGenerator targetPackage="${mapperPackage}"
                             targetProject="${mapperProject}" type="XMLMAPPER" />
        <!-- 如果需要通配所有表 直接用sql的通配符    %即可 -->
        <table schema="" tableName="${table}" enableCountByExample="false"
               enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false"/>
    </context>
</generatorConfiguration>

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mytest?useUnicode=true&characterEncoding=utf-8
username=root
password=*********
#entity 包名和 java目录
modelPackage=com.springmvc.entity
modelProject=src/main/java
#sqlmap包名 和resources目录
sqlPackage=sqlmap
sqlProject=src/main/resources
#mapper包名和 java目录
mapperPackage=com.springmvc.dao
mapperProject=src/main/java
table=message

package com.springmvc.dao;
import com.springmvc.entity.Message;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
 * @author yzh
 * @date 2019-08-19 14:50
 */
public class MessageMapperTest {
    private ApplicationContext applicationContext;
    @Autowired
    private MessageMapper mapper;
    @Before
    public void setUp() throws Exception {
        // 加载spring配置文件
        applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext.xml");
        // 导入需要测试的
        mapper = applicationContext.getBean(MessageMapper.class);
    }
    @After
    public void tearDown() throws Exception {
    }
    @Test
    public void insert() throws Exception {
        Message message = new Message();
        message.setCommand("前端");
        message.setContent("后端");
        message.setDescription("都会点");
        int result = mapper.insert(message);
        System.out.println(result);
        assert (result == 1);
    }
}