mybatis-plus-generator代码生成器

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已于 2023-05-12 21:49:29 修改

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文章标签： spring boot mybatis java

于 2023-01-10 13:07:03 首次发布

本文链接：https://blog.youkuaiyun.com/m0_58236416/article/details/128627920

版权

文章介绍了如何在项目中引入MyBatis-Plus的Boot-Starter和Generator依赖，通过配置数据库连接、输出目录等信息，自动生成包括Mapper、Entity、Controller等在内的代码。同时，文章提到了可以自定义模板，例如这里的UserController，并展示了Controller模板的编写示例。

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引入pom依赖


        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.1</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.7</version>
        </dependency>

新建一个类CodeGenerator.java

package com.shaxt.rushduck.utils;

import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;

import java.util.Collections;

public class CodeGenerator {

    public static void main(String[] args) {
        generate();
    }

    private static void generate() {
        FastAutoGenerator.create("jdbc:mysql://localhost:3306/demo?serverTimezone=GMT%2b8", "root", "******")
                .globalConfig(builder -> {
                    builder.author("cq") // 设置作者
                            .enableSwagger() // 开启 swagger 模式
                            .fileOverride() // 覆盖已生成文件
                            .outputDir("D:\\..........\\src\\main\\java\\"); // 指定输出目录
                })
                .packageConfig(builder -> {
                    builder.parent("com.***.rushduck") // 设置父包名
                            .moduleName(null) // 设置父包模块名,设置为null请求地址不会出现双//
                            .pathInfo(Collections.singletonMap(OutputFile.mapperXml, "D:\\........\\src\\main\\resources\\mapper\\")); // 设置mapperXml生成路径
                })
                .strategyConfig(builder -> {
                    builder.entityBuilder().enableLombok();
               //  builder.mapperBuilder().enableMapperAnnotation().build();
                    builder.controllerBuilder().enableHyphenStyle()  // 开启驼峰转连字符
                            .enableRestStyle();  // 开启生成@RestController 控制器
                    builder.addInclude("sys_user") // 设置需要生成的表名
                            .addTablePrefix("t_", "sys_"); // 设置过滤表前缀
                })
             //    .templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
                .execute();

    }
}

3.找到mybatis-plus-generator对应的包

4.可以自定义需要生成的模板，这里只实例UserController,也可以配置其他的模板，比如UserService(不定义的话生成空的UserService)

4.1导入必要的包

4.2配置自己需要的模板

package ${package.Controller};

//导入必要的包
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
import java.util.List;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import ${package.Service}.${table.serviceName};
import ${package.Entity}.${entity};

#if(${restControllerStyle})
import org.springframework.web.bind.annotation.RestController;
#else
import org.springframework.stereotype.Controller;
#end
#if(${superControllerClassPackage})
import ${superControllerClassPackage};
#end

/**
 * <p>
 * $!{table.comment} 前端控制器
 * </p>
 *
 * @author ${author}
 * @since ${date}
 */
#if(${restControllerStyle})
@RestController
#else
@Controller
#end
@RequestMapping("#if(${package.ModuleName})/${package.ModuleName}#end/#if(${controllerMappingHyphenStyle})${controllerMappingHyphen}#else${table.entityPath}#end")
#if(${kotlin})
class ${table.controllerName}#if(${superControllerClass}) : ${superControllerClass}()#end

#else
#if(${superControllerClass})
public class ${table.controllerName} extends ${superControllerClass} {
#else
public class ${table.controllerName} {
#end

            @Resource
            private ${table.serviceName} ${table.entityPath}Service; //private UserService userService


            @GetMapping("/find/{id}")
            public ${entity} findOne(@PathVariable Integer id) {
                    return ${table.entityPath}Service.getById(id);
                    }

            @GetMapping("/findAll")
            public List<${entity}> findAll() {
                    return ${table.entityPath}Service.list();
                    }

            // 新增或者更新
            @PostMapping("/save")
            public boolean save(@RequestBody ${entity} ${table.entityPath}) {   //@RequestBody User user
                    return ${table.entityPath}Service.saveOrUpdate(${table.entityPath});
                    }

            @DeleteMapping("/delete/{id}")
            public Boolean delete(@PathVariable Integer id) {
                    return ${table.entityPath}Service.removeById(id);
                    }

            @PostMapping("/delete/batch")
            public boolean deleteBatch(@RequestBody List<Integer> ids) {
                    return ${table.entityPath}Service.removeByIds(ids);
                    }


            @GetMapping("/page")
            public IPage<${entity}> findPage(@RequestParam Integer pageNum,
                                           @RequestParam Integer pageSize) {
                    IPage<${entity}> page = new Page<>(pageNum,pageSize);
                    QueryWrapper<${entity}> queryWrapper = new QueryWrapper<>();
                   // queryWrapper.orderByDesc("id");  倒叙显示
                    return ${table.entityPath}Service.page(page, queryWrapper);
                    }

        }

#end

5.启动