Mybatis（七）：Mybatis Generator

﹏ヽ暗。殇╰゛Y 2022-06-02 07:46 207阅读 0赞

> Mybatis Generator 自动生成代码工具

首先，还是一样，学东西看官网：[http://www.mybatis.org/generator/index.html][http_www.mybatis.org_generator_index.html]

不看官网就看我的代码吧。。。

#### 一、依赖 ####

<project>
       <modelVersion>4.0.0</modelVersion>
       <groupId>cn.saytime</groupId>
       <artifactId>mybatis_generator</artifactId>
       <version>1.0</version>
       <packaging>pom</packaging>
       <name>mybatis_generator</name>
    
       <dependencies>
          
          <dependency>
             <groupId>org.mybatis.generator</groupId>
             <artifactId>mybatis-generator-core</artifactId>
             <version>1.3.6</version>
          </dependency>
       </dependencies>
    
    </project>

#### 二、配置文件 ####

generatorConfig.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>    
        <classPathEntry location="D:\dev\tools\maven\repo\mysql\mysql-connector-java\5.1.34\mysql-connector-java-5.1.34.jar"/>
        <context id="DB2Tables" targetRuntime="MyBatis3">    
            
    
            
            <commentGenerator>    
                <property name="suppressDate" value="true"/>
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
    
            
            <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8" userId="root" password="root">
            </jdbcConnection>
    
            
            <javaTypeResolver>    
                <property name="forceBigDecimals" value="false"/>    
            </javaTypeResolver>
    
            
            <javaModelGenerator targetPackage="cn.saytime.model" targetProject="src/main/java">
                <property name="enableSubPackages" value="true"/>    
                <property name="trimStrings" value="true"/>    
            </javaModelGenerator>
    
            
            <sqlMapGenerator targetPackage="cn.saytime.mapper.mapping" targetProject="src/main/java">
                <property name="enableSubPackages" value="true"/>    
            </sqlMapGenerator>
    
            
            <javaClientGenerator type="XMLMAPPER" targetPackage="cn.saytime.mapper" targetProject="src/main/java">
                <property name="enableSubPackages" value="true"/>    
            </javaClientGenerator>
    
            
            <table tableName="tb_user" domainObjectName="User">
                
                <property name="useActualColumnNames" value="true"/>
    
                
                <columnOverride column="username" property="name" javaType="java.lang.String"/>
            </table>
    
        </context>
    </generatorConfiguration>

#### 三、生成代码类 ####

Generator.java

package cn.saytime.generator;
    
    import org.mybatis.generator.api.MyBatisGenerator;
    import org.mybatis.generator.config.Configuration;
    import org.mybatis.generator.config.xml.ConfigurationParser;
    import org.mybatis.generator.exception.InvalidConfigurationException;
    import org.mybatis.generator.exception.XMLParserException;
    import org.mybatis.generator.internal.DefaultShellCallback;
    
    import java.io.File;
    import java.io.IOException;
    import java.sql.SQLException;
    import java.util.ArrayList;
    import java.util.List;
    
    /** * Created by L on 2018/1/7. */
    public class Generator {
    
        public static void main(String[] args) throws IOException, XMLParserException, SQLException, InterruptedException, InvalidConfigurationException {
    
            System.out.println("generator start ...");
    
            List<String> warnings = new ArrayList<String>();
            boolean overwrite = true;
            File configFile = new File(Generator.class.getClassLoader().getResource("generatorConfig.xml").getFile());
            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("generator end...");
        }
    
    }

生成代码之后的样子是：

![这里写图片描述][SouthEast]

项目代码如下：  
[https://gitee.com/saytime/mybatis\_generator][https_gitee.com_saytime_mybatis_generator]

[http_www.mybatis.org_generator_index.html]: http://www.mybatis.org/generator/index.html
[SouthEast]: /images/20220602/472d17d6644b47d6ac76d6bebb4c12f2.png
[https_gitee.com_saytime_mybatis_generator]: https://gitee.com/saytime/mybatis_generator