JAVA入门[7]-Mybatis generator(MBG)自动生成mybatis代码

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一、新建测试项目

新建Maven项目MybatisDemo2，修改pom.xml引入依赖。dependencies在上节基础上新增

<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>

build添加plugin

<build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/config/mybatis-generator-config.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>

configurationFile节点指定了mybatis generator配置文件的路径

二、添加MBG配置文件

运行MBG主要依靠一份配置文件，这也是学习MBG的关键。官方详细的配置说明：http://www.mybatis.org/generator/configreference/xmlconfig.html

我们在上一步中配置了mybatis generator配置文件的目录${basedir}/src/main/resources/mybatis-generator-config.xml，现在就在对应目录新建该xml文件。内容如下：

<?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="context" targetRuntime="MyBatis3">

<property name="javaFileEncoding" value="UTF-8"/>
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/store"
userId="root" password="root"/>

<javaModelGenerator targetPackage="com.data.pojo" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
<property name="comments" value="true"/>
</javaModelGenerator>

<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>

<javaClientGenerator targetPackage="com.data.mapper" targetProject="src/main/java" type="XMLMAPPER">
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<table tableName="category" enableCountByExample="true" enableDeleteByExample="true" enableSelectByExample="true" enableUpdateByExample="true">
<generatedKey column="Id" sqlStatement="mysql" identity="true"/>
</table>
</context>
</generatorConfiguration>