MyBatis Generator: Generate entity classes, SQL definition files and Mapper interfaces according to database tables.

XML import mybatis, mybatis- Generator-core, and MySQL driver package.

<dependencies>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.4.6</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.3.5</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.46</version>
		</dependency>
</dependencies>
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2, add a mybatis- Generator configuration file in the project root directory

      
	<! DOCTYPEgeneratorConfiguration
	  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
	  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
	
	<generatorConfiguration>
	<! -- Specify driver package -->
	  <classPathEntry location="C: \ Users \ mysql connector - Java - 5.1.43. Jar" />
	
	  <context id="DB2Tables" targetRuntime="MyBatis3">
		<! -- Set connection parameters -->
		<jdbcConnection driverClass="com.mysql.jdbc.Driver"
			connectionURL="jdbc:mysql://localhost:3306/****"    <!--Setting up the database-->
			userId="root"
			password="11111111">
		</jdbcConnection>
	
		<! -- Set entity class location -->
		<javaModelGenerator targetPackage="ovls.entity" targetProject=".\src\main\java">
		  <property name="enableSubPackages" value="true" />
		  <property name="trimStrings" value="true" />
		</javaModelGenerator>
	
		<! -- Select SQL XML location -->
		<sqlMapGenerator targetPackage="sql"  targetProject=".\src\main\resources">
		  <property name="enableSubPackages" value="true" />
		</sqlMapGenerator>
	
		<! -- Specify Mapper interface location -->
		<javaClientGenerator type="ANNOTATEDMAPPER" targetPackage="***.dao"  targetProject=".\src\main\java">
		  <property name="enableSubPackages" value="true" />
		</javaClientGenerator>
	
		<! -- Specify which tables are used to generate the above elements.
		<table  tableName="%" enableCountByExample="false" 
			enableDeleteByExample="false" enableSelectByExample="false"
			enableUpdateByExample="false">
		</table>
	
	  </context>
</generatorConfiguration>
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3. Load relevant configuration files and perform generation

public class RunMyBatisGenerator {
	
		public static void main(String[] args) throws Exception{
				List<String> warnings = new ArrayList<String>();
			   boolean overwrite = true;
			   File configFile = new File("mbg.xml");// Set the accessory name in step 2
			   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); }}Copy the code

Run the class, OK.