MyBatis-Plus的代码生成器

.pom依赖文件

        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.0.0
        

        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.0.7.1
        
        
            com.alibaba
            fastjson
            1.2.47
        

        
            com.baomidou
            mybatis-plus-generator
            3.0.7
        
        
            org.springframework.boot
            spring-boot-starter-freemarker
        
        
        
            org.apache.velocity
            velocity-engine-core
            2.0
        

        
        
            org.freemarker
            freemarker
            2.3.28
        

        
        
            com.ibeetl
            beetl
            2.9.8
        

    

项目结构

数据库配置

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456

server.port=8080

MysqlGenerator

package com.example.demo.generator;

import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.FileOutConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.TemplateConfig;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

/**
 * 

 * mysql 代码生成器演示例子
 * 
 *
 * @author f
 * @since 2018-09-12
 */
public class MysqlGenerator {

    /**
     * 

     * 读取控制台内容
     * 
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    /**
     * RUN THIS
     */
    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("fr");
        gc.setOpen(false);
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/test?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=GMT%2B8");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(scanner("模块名"));
        pc.setParent("com.example.demo");
        mpg.setPackageInfo(pc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };
        List focList = new ArrayList<>();
        focList.add(new FileOutConfig("/templates/mapper.xml.ftl") {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输入文件名称
                return projectPath + "/src/main/resources/mapper/" + pc.getModuleName()
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);
        mpg.setTemplate(new TemplateConfig().setXml(null));

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
//设置生成实体类的继承类，不需要可不用，我这注释掉了
//        strategy.setSuperEntityClass("com.example.demo.entity");
        strategy.setEntityLombokModel(true);
//设置生成controller类的继承类，不需要可不用，我这注释掉了
//        strategy.setSuperControllerClass("com.example.demo.controller");
        strategy.setInclude(scanner("表名"));
        strategy.setSuperEntityColumns("id");
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix(pc.getModuleName() + "_");
        mpg.setStrategy(strategy);
        // 选择 freemarker 引擎需要指定如下加，注意 pom 依赖必须有！
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}

// 切换为 freemarker 模板引擎
mpg.setTemplateEngine(new FreemarkerTemplateEngine());

// 切换为 beetl 模板引擎
mpg.setTemplateEngine(new BeetlTemplateEngine());

测试

package com.example.demo.user.controller;


import com.alibaba.fastjson.JSON;
import com.example.demo.user.entity.User;
import com.example.demo.user.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.stereotype.Controller;

import java.util.List;

/**
 * 

 *  前端控制器
 * 
 *
 * @author fr
 * @since 2019-01-23
 */
@Controller
@RequestMapping("/user/user")
public class UserController {
    @Autowired
    private UserMapper userMapper;
    @PostMapping("/test")
    public void test(){
        System.out.println(("----- selectAll method test ------"));
        List userList = userMapper.selectList(null);
//        userList.forEach(System.out::println);
        userList.forEach(User->{
            System.out.println("====="+ JSON.toJSONString(User));
        });
    }

}

  生成代码实体类没有主键ID，更改代码

strategy.setSuperEntityColumns("id");
替换为
strategy.setSuperEntityColumns(new String[]{"test_id"});

 

参考：https://mp.baomidou.com/guide/generator.html