1创建数据表

如图所示:我的是在text数据库中创建了一个Student表,字段有id(int),   name(varchar),     age(int),    score(int)

mybatis generator(MyBatis的逆向工程)-LMLPHP

2创建项目

1)加入jar特殊的jar包   mybatis-generator-core-x.x.x.jar

2)创建项目

mybatis generator(MyBatis的逆向工程)-LMLPHP

3)编写GeneratorXML.xml

注意GeneratorXML.xml的位置,和src同级

mybatis generator(MyBatis的逆向工程)-LMLPHP

mybatis generator(MyBatis的逆向工程)-LMLPHP

<?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="DB2Tables" targetRuntime="MyBatis3"> <!-- 不生成注释 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator> <!-- 连接的数据库的信息 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/text" userId="root"
password="root">
</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> <!-- javaBean生成的位置 -->
<javaModelGenerator targetPackage="com.imooc.entity"
targetProject=".\src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator> <!-- sql映射文件的位置-->
<sqlMapGenerator targetPackage="com.imooc.mapper targetProject=".\src">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator> <!-- dao的位置位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.imooc.dao</span>" targetProject=".\src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator> <!-- tableName对应数据库中的表名,domainObjectName对应实体类 -->
<table tableName="student" domainObjectName="Student"></table> </context>
</generatorConfiguration>

4)编写程序执行上面的XML

package com.imooc.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 MainGenerator { public static void main(String[] args) throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
 File configFile = new File("GeneratorXML.xml");//就这一句需要注意,XML的名称别写错,别的都是固定格式
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);
System.out.println("123123");
} }

5)查看结果

mybatis generator(MyBatis的逆向工程)-LMLPHP

如果是Oracle

<?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="DB2Tables" targetRuntime="MyBatis3"> <!-- 不生成注释 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator> <!-- 连接的数据库的信息 -->
<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:Orcl" userId="user1"
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> <!-- javaBean生成的位置 -->
<javaModelGenerator targetPackage="entity"
targetProject=".\src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator> <!-- sql映射文件的位置-->
<sqlMapGenerator targetPackage="mapper" targetProject=".\src">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator> <!-- dao的位置位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="dao" targetProject=".\src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator> <!-- tableName对应数据库中的表名,domainObjectName对应实体类 -->
<table tableName="TB_JOB" domainObjectName="Job"></table> </context>
</generatorConfiguration>
05-11 15:38
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