Mybatis-逆向工程实现

generatorConfig.xml（配置文件）

<?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">
<plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
<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://localhost:3306/tiantian" userId="root"
password="123456">
</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.tian.pojo"
targetProject=".\src\main\java">
<!-- enableSubPacka
4000
ges: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.tian.dao"
targetProject=".\src\main\java">
<!-- 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.tian.dao" 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 tableName="tb_content" domainObjectName="Countent"></table>
<table tableName="tb_content_category" domainObjectName="ContentCategory"></table>
<table tableName="tb_item" domainObjectName="Item"></table>
<table tableName="tb_item_cat" domainObjectName="ItemCat"></table>
<table tableName="tb_item_desc" domainObjectName="ItemDesc"></table>
<table tableName="tb_item_param" domainObjectName="ItemParam"></table>
<table tableName="tb_item_param_item" domainObjectName="ItemParamItem"></table>
<table tableName="tb_order" domainObjectName="Order"></table>
<table tableName="tb_order_item" domainObjectName="OrderItem"></table>
<table tableName="tb_order_shopping" domainObjectName="OrderShopping"></table>
<table tableName="tb_user" domainObjectName="User"></table>
</context>
</generatorConfiguration>

执行程序

package com.tian.test;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

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;

public class GeneratorTest {

public static void main(String[] args) throws Exception{
List<String>warnings=new ArrayList<>();
//1、获取配置文件
Configuration configuration=new ConfigurationParser(warnings).
parseConfiguration(new File("src/main/resources/generatorConfig.xml"));
//2、创建回调接口的实现类
DefaultShellCallback callback=new DefaultShellCallback(true);
//3、创建生成器对象
MyBatisGenerator generator=new MyBatisGenerator(configuration, callback, warnings);
//4、生成
generator.generate(null);
}
}

maven依赖

<!-- 逆向工程 -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>