MyBatis逆向工程generator自动代码生成

绝地灬酷狼 2023-02-20 04:56 72阅读 0赞

## 概述 ##

名字听起来挺高大上的 但实际上所谓MyBatis逆向工程 就是**通过相应的插件自动生成MyBatis数据库连接的一些文件**(例如mapper、pojo…)  
以提高工作效率

## 步骤 ##

#### 首先 导入依赖： ####

<dependency>
    	<groupId>org.mybatis.generator</groupId>
    	<artifactId>mybatis-generator-core</artifactId>
    	<version>1.3.5</version>
    </dependency>

#### 创建一个配置文件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>
        <context id="MyTables" targetRuntime="MyBatis3">
            
            <commentGenerator>
                
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
            
            
            <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                            connectionURL="jdbc:mysql://localhost:3306/demo"
                            userId="root"
                            password="123456">
            </jdbcConnection>
        
            
            <javaTypeResolver >
                <property name="forceBigDecimals" value="false" />
            </javaTypeResolver>
        
            
            <javaModelGenerator targetPackage="net.zjitc.pojo" targetProject=".\src\main\java">
                
                <property name="enableSubPackages" value="false" />
                
                <property name="trimStrings" value="true" />
            </javaModelGenerator>
        
            
            <sqlMapGenerator targetPackage="net.zjitc.mapper" targetProject=".\src\main\java">
                
                <property name="enableSubPackages" value="false" />
            </sqlMapGenerator>
        
            
            <javaClientGenerator type="XMLMAPPER" targetPackage="net.zjitc.mapper" targetProject=".\src\main\java">
                
                <property name="enableSubPackages" value="false" />
            </javaClientGenerator>
        
            
            <table schema="" tableName="tb_a"/>
            <table schema="" tableName="tb_b"/>
            <table schema="" tableName="tb_c"/>
            <table schema="" tableName="tb_d"/>
        </context>
    </generatorConfiguration>

#### 最后 创建一个启动类： ####

运行main方法 即可开始生成

import java.io.File;
    import java.util.*;
    
    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 void generator() throws Exception {
        
            List<String> warnings = new ArrayList<String>();
            boolean overwrite = true;
            // 指定配置文件的位置
            File configFile = new File("F:\\IdeaProjects\\xxx\\src\\main\\resources\\generatorConfig.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);
        }
    
        // 生成代码
        public static void main(String[] args) {
        
            try {
        
                GeneratorTest generatorTest = new GeneratorTest();
                generatorTest.generator();
            } catch (Exception e) {
        
                e.printStackTrace();
            }
        }
    }

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