mybatis-generator的使用

1，導入jar包

gradle方式

testCompile 'org.mybatis.generator:mybatis-generator-core:1.3.5'

  compile 'org.mybatis:mybatis:3.4.1'
    compile 'com.zaxxer:HikariCP:3.3.1'
    compile 'mysql:mysql-connector-java:5.1.37'

maven 方式

<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.3.5</version>
			<scope>test</scope>
		</dependency>
<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.4.2</version>
		</dependency>
	<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.41</version>
		</dependency>
<dependency>
			<groupId>com.oracle</groupId>
			<artifactId>ojdbc14</artifactId>
			<version>10.2.0.4.0</version>
		</dependency>

2，編寫generator配置文件

mbg.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">
<generatorConfiguration>

	<context id="DB2Tables" targetRuntime="MyBatis3">
	<!-- 去掉註釋 -->
		<commentGenerator>
			<property name="suppressAllComments" value="true" />
		</commentGenerator>
		<!-- 配置數據庫鏈接 -->
		<jdbcConnection driverClass="com.mysql.jdbc.Driver"
			connectionURL="jdbc:mysql://localhost:3306/test" userId="root"
			password="1234">
		</jdbcConnection>

		<javaTypeResolver>
			<property name="forceBigDecimals" value="false" />
		</javaTypeResolver>

		<!-- 指定javaBean生成的位置 -->
		<javaModelGenerator targetPackage="com.mybatis.bean"
			targetProject=".\src\main\java">
			<property name="enableSubPackages" value="true" />
			<property name="trimStrings" value="true" />
		</javaModelGenerator>

		<!--指定sql映射文件生成的位置 -->
		<sqlMapGenerator targetPackage="com.mybatis.dao.xml" targetProject=".\src\main\java">
			<property name="enableSubPackages" value="true" />
		</sqlMapGenerator>

		<!-- 指定dao接口生成的位置，mapper接口 -->
		<javaClientGenerator type="XMLMAPPER"
			targetPackage="com.mybatis.dao" targetProject=".\src\main\java">
			<property name="enableSubPackages" value="true" />
		</javaClientGenerator>

		<!-- table指定每一個表的生成策略 -->
		<table tableName="user" domainObjectName="User"></table>
	</context>
</generatorConfiguration>

3，編寫程序，讀取配置文件

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 MBGTest {
	public static void main(String[] args) throws Exception{
		   List<String> warnings = new ArrayList<String>();
		   boolean overwrite = true;
		   File configFile = new File("mbg.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);
		   System.out.println("生成完畢！");
	}
}