1. 目录结构
2. pom导包
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- MBG -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
3.generatorConfig.xml
<?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">
<!-- 配置生成器 -->
<generatorConfiguration>
<!--执行generator插件生成文件的命令: call mvn mybatis-generator:generate -e -->
<!-- 引入配置文件 -->
<properties resource="mybatisGeneratorinit.properties"/>
<!--classPathEntry:数据库的JDBC驱动,换成你自己的驱动位置 可选 -->
<!--<classPathEntry location="D:\generator_mybatis\mysql-connector-java-5.1.24-bin.jar" /> -->
<!-- 一个数据库一个context -->
<!--defaultModelType="flat" 大数据字段,不分表 -->
<context id="MysqlTables" targetRuntime="MyBatis3Simple" defaultModelType="flat">
<!-- 自动识别数据库关键字,默认false,如果设置为true,根据SqlReservedWords中定义的关键字列表;
一般保留默认值,遇到数据库关键字(Java关键字),使用columnOverride覆盖 -->
<property name="autoDelimitKeywords" value="true" />
<!-- 生成的Java文件的编码 -->
<property name="javaFileEncoding" value="utf-8" />
<!-- beginningDelimiter和endingDelimiter:指明数据库的用于标记数据库对象名的符号,比如ORACLE就是双引号,MYSQL默认是`反引号; -->
<property name="beginningDelimiter" value="`" />
<property name="endingDelimiter" value="`" />
<!-- 格式化java代码 -->
<property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter"/>
<!-- 格式化XML代码 -->
<property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/>
<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
<plugin type="org.mybatis.generator.plugins.ToStringPlugin" />
<!-- 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>
<!-- jdbc连接 -->
<jdbcConnection driverClass="${jdbc_driver}" connectionURL="${jdbc_url}" userId="${jdbc_user}" password="${jdbc_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>
<!-- 生成实体类地址 -->
<javaModelGenerator targetPackage="${package_pojo}" targetProject="${project}" >
<property name="enableSubPackages" value="false"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!-- 生成mapxml文件 -->
<sqlMapGenerator targetPackage="${package_mapperxml}" targetProject="${project}" >
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- 生成mapxml对应client,也就是接口dao -->
<javaClientGenerator targetPackage="${package_mapper}" targetProject="${project}" type="XMLMAPPER" >
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- table可以有多个,每个数据库中的表都可以写一个table,tableName表示要匹配的数据库表,也可以在tableName属性中通过使用%通配符来匹配所有数据库表,只有匹配的表才会自动生成文件 -->
<table tableName="%">
<property name="useActualColumnNames" value="false" />
</table>
</context>
</generatorConfiguration>
4.mybatisGeneratorinit.properties
#Mybatis Generator configuration
project =src/main/java
resources=src/main/resources
#实体类包
package_pojo=com.zyw.pojo
#mapper包
package_mapper=com.zyw.mapper
#xml包
package_mapperxml=com.zyw.mapper.xml
jdbc_driver =com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://127.0.0.1:3306/springboot
jdbc_user=root
jdbc_password=111111
5.Generator
import org.junit.Test;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
public class Generator {
@Test
public void generator() throws Exception{
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("src/main/resources/generatorConfig.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
}
}
运行结果
运行Generator就可以自动生成实体类、mapper和xml
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