1.首先创建一个Maven工程,pom依赖中添加
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
</dependencies>
2.直接在项目目录下新建配置文件
QQ截图20190301194024.png
配置文件的内容为:
<?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="testTables" targetRuntime="MyBatis3">
<!-- 配置pojo的序列化 -->
<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
<commentGenerator>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql:///pinyougoudb" userId="root"
password="2237">
</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.logoxiang.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.logoxiang.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.logoxiang.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 schema="" tableName="tb_address"/>
<table schema="" tableName="tb_areas"/>
<table schema="" tableName="tb_brand"/>
<table schema="" tableName="tb_cities"/>
<table schema="" tableName="tb_content"/>
<table schema="" tableName="tb_content_category"/>
<table schema="" tableName="tb_freight_template"/>
<table schema="" tableName="tb_goods"/>
<table schema="" tableName="tb_goods_desc"/>
<table schema="" tableName="tb_item"/>
<table schema="" tableName="tb_item_cat"/>
<table schema="" tableName="tb_order"/>
<table schema="" tableName="tb_order_item"/>
<table schema="" tableName="tb_pay_log"/>
<table schema="" tableName="tb_provinces"/>
<table schema="" tableName="tb_seckill_goods"/>
<table schema="" tableName="tb_seckill_order"/>
<table schema="" tableName="tb_seller"/>
<table schema="" tableName="tb_specification"/>
<table schema="" tableName="tb_specification_option"/>
<table schema="" tableName="tb_type_template"/>
<table schema="" tableName="tb_user"/>
</context>
</generatorConfiguration>
3.创建运行类:
/**
* @Author: logoxiang
* @Date: 2019/1/26 13:52
*/
public class GeneratorSqlMap {
public void generator() throws Exception{
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
//指定 逆向工程配置文件
File configFile = new File("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);
}
public static void main(String[] args) throws Exception {
try {
GeneratorSqlMap generatorSqlmap = new GeneratorSqlMap();
generatorSqlmap.generator();
} catch (Exception e) {
e.printStackTrace();
}
}
}
4.注意我们的逆向工程是依赖数据库中的表,所以咱们首先要把表建起来,在运行逆向工程
