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1. 集成mybatis-generator
步骤1：添加idea插件
步骤2：添加server\src\main\resources\generator\generatorConfig.xml
步骤3：创建maven启动命令mybatis-generator:generate -e

<!-- mybatis generator 自动生成代码插件 -->
<plugin>
	<groupId>org.mybatis.generator</groupId>
	<artifactId>mybatis-generator-maven-plugin</artifactId>
	<version>1.3.7</version>
	<configuration>
		<configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>
		<overwrite>true</overwrite>
		<verbose>true</verbose>
	</configuration>
	<dependencies>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.37</version>
		</dependency>
	</dependencies>
</plugin>

<?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="Mysql" targetRuntime="MyBatis3" defaultModelType="flat">

        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>

        <!--覆盖生成XML文件-->
        <plugin type="org.mybatis.generator.plugins.UnmergeableXmlMappersPlugin" />
        <!-- 生成的实体类添加toString()方法 -->
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin" />

        <!-- 不生成注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/dbname"
                        userId="username"
                        password="password">
        </jdbcConnection>

        <!-- domain实体类的位置 -->
        <javaModelGenerator targetProject="src\main\java"
                            targetPackage="com.xxx.xxxx.domain"/>

        <!-- mapper xml的位置 -->
        <sqlMapGenerator targetProject="src\main\resources"
                         targetPackage="mapper"/>

        <!-- mapper类的位置 -->
        <javaClientGenerator targetProject="src\main\java"
                             targetPackage="com.xxxx.xxxx.mapper"
                             type="XMLMAPPER" />
　　　　　　
        <table tableName="test" domainObjectName="Test"/>
    </context>
</generatorConfiguration>

创建maven启动命令mybatis-generator:generate -e