SpringBoot+MybatisPlus完成单表CRUD

目录

1.创建springboot项目

2.环境准备

2.1.数据库

2.2.引入依赖

2.3.修改application.properties配置文件

2.4.创建代码生成器MybatisPlusGenerator.java

2.5.创建SwaggerConfig.java配置文件

2.6.创建分页配置类

2.7.创建类：统一响应的json数据

2.8.条件查询中所需要的条件

3.前端准备

3.1.引入前端所需要的 js,css文件(在代码包中)

3.2.前端页面布局及CRUD

4.后台代码书写

4.1.运行代码生成器MybatisPlusGenerator.java

 4.1.TbZoneController.java中编写CRUD

5.项目总览

5.1.包

5.2.最终效果图

---

1.创建springboot项目

...

2.环境准备

2.1.数据库

DROP TABLE IF EXISTS `tb_zone`;
CREATE TABLE `tb_zone`  (
  `id` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '主键',
  `gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
  `gmt_modified` datetime(0) NULL DEFAULT NULL COMMENT '修改时间',
  `is_deleted` int(10) NOT NULL COMMENT '逻辑删除(0:正常;1:删除)',
  `is_disable` int(11) NOT NULL COMMENT '状态(0:正常;1:禁用)',
  `zone_name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '名称',
  `zone_desc` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '描述',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '专区' ROW_FORMAT = Compact;

-- ----------------------------
-- Records of tb_zone
-- ----------------------------
INSERT INTO `tb_zone` VALUES ('1', '2022-09-02 10:00:34', '2022-09-22 13:52:11', 0, 0, '农副产品', '瓜果蔬菜 无公害 无污染');
INSERT INTO `tb_zone` VALUES ('2', '2018-07-04 10:45:07', '2022-09-02 09:18:39', 0, 0, '海鲜水产', '龙虾 螃蟹 生蚝 种类齐全');
INSERT INTO `tb_zone` VALUES ('3', '2018-07-04 10:45:07', '2022-09-02 11:13:36', 0, 0, '香甜水果', '葡梨浆果 多汁鲜物');
INSERT INTO `tb_zone` VALUES ('4', '2018-07-04 10:45:07', '2021-06-21 10:58:07', 0, 0, '有机蔬菜', '无公害 脆嫩 新鲜润胃');
INSERT INTO `tb_zone` VALUES ('5', '2018-07-04 10:45:07', '2021-06-21 10:58:07', 0, 0, '粮油专区', ' 非转基因 调和油 植物油');

2.2.引入依赖

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.3.12.RELEASE
         
    
    com.example
    CS1
    0.0.1-SNAPSHOT
    CS1
    CS1
    
        1.8
    
    

        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.1
        

        
        
            com.baomidou
            mybatis-plus-generator
            3.5.1
        
        
            org.apache.velocity
            velocity-engine-core
            2.3
        
        
            org.freemarker
            freemarker
            2.3.29
        

        
        
            io.github.jianzhichun
            spring-boot-starter-swagger2
            0.0.1
        
        
            com.github.xiaoymin
            swagger-bootstrap-ui
            1.9.6
        


        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.3.1
        

        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter-test
            2.3.1
            test
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
                
                    
                        
                            org.projectlombok
                            lombok
                        
                    
                
            
        
    

2.3.修改application.properties配置文件

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/mybatisplus?serverTimezone=Asia/Shanghai&characterEncoding=UTF8
spring.datasource.username=root
spring.datasource.password=123456789

mybatis-plus.mapper-locations=classpath:/mapper/*.xml

mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

2.4.创建代码生成器MybatisPlusGenerator.java

package com.wqg;


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

import java.util.Collections;

public class MybatisPlusGenerator {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mybatisplus?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=Asia/Shanghai";
        String projectPath = "D:\\java1\\reggie\\CS1";
        FastAutoGenerator.create(url, "root", "123456789")
                .globalConfig(builder -> {
                    builder.author("WQG") // 设置作者
                            .enableSwagger() // 开启 swagger 模式
                            .fileOverride() // 覆盖已生成文件
                            .outputDir(projectPath + "/src/main/java"); // 指定输出目录
                })

                .packageConfig(builder -> {
                    builder.parent("com.wqg") // 设置父包名
                            .moduleName("zone") // 设置父包模块名
                            .pathInfo(Collections.singletonMap(OutputFile.mapperXml, projectPath + "/src/main/resources/mapper/"));// 设置mapperXml生成路径
                })
                .strategyConfig(builder -> {
                    builder.entityBuilder().enableLombok();//启用lombok
                    builder.mapperBuilder().enableMapperAnnotation().build();//启用映射器注释
                    builder.controllerBuilder().enableHyphenStyle()  // 开启驼峰转连字符
                            .enableRestStyle();  // 开启生成@RestController 控制器
                    builder.addInclude("tb_zone"); // 设置需要生成的表名
                })

                .templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
                // 开始处理
                .execute();
    }
}

2.5.创建SwaggerConfig.java配置文件

package com.wqg.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

@Configuration //表示类似与配置文件
public class SwaggerConfig {

    @Bean //加在方法上，表示吧方法的返回结果交于spring容器来管理该对象. 里面封装了接口文档的信息，
    public Docket docket(){
        Docket docket=new Docket(DocumentationType.SWAGGER_2)
                .groupName("qy165")
                .apiInfo(getInfo())
                .select()
                //只为com.aaa.controller包下的类生成接口文档
                .apis(RequestHandlerSelectors.basePackage("com.wqg"))
                .build();
        return docket;
    }

    private ApiInfo getInfo(){
        Contact DEFAULT_CONTACT = new Contact("张三", "http://www.jd.com", "[email protected]");
        ApiInfo apiInfo= new ApiInfo("员工管理系统API文档", "员工管理系统API文档",
                "1.5", "localhost:8081/doc.html", DEFAULT_CONTACT, "AAA志远网络有限公司", "http://www.aaa.com");
        return apiInfo;
    }
}

2.6.创建分页配置类

@Configuration
public class MybatisPlusConfig {
    //分页配置类

    /**
     * 新的分页插件,一缓和二缓遵循mybatis的规则,需要设置 MybatisConfiguration#useDeprecatedExecutor = false 避免缓存出现问题(该属性会在旧插件移除后一同移除)
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

2.7.创建类：统一响应的json数据

@NoArgsConstructor
@AllArgsConstructor
@Data
@ApiModel(value = "统一响应的json数据")
public class Result {
    //表示状态码
    @ApiModelProperty(value = "状态码 200表示成功 500表示服务器错误 401表示权限不足")
    private Integer code;
    //消息提示
    @ApiModelProperty(value = "响应的消息内容")
    private String msg;
    //响应的数据内容
    @ApiModelProperty(value = "响应的数据")
    private Object data;
}

2.8.条件查询中所需要的条件

@Data
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(value = "条件查询")
public class ZoneVo {

    @ApiModelProperty("状态(0:正常;1:禁用)")
    private Integer isDisable;

    @ApiModelProperty("名称")
    private String zoneName;
}

3.前端准备

3.1.引入前端所需要的 js,css文件(在代码包中)

3.2.前端页面布局及CRUD

    
    
    
    
    
    




    
    
        
            
        
        
            
                
                
            
        

        
            查询
            
            
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  取 消
  确 定

    


    
    
        
            
                
            
            
                
            


            
                
                    
                    
                
            

            
                正常
                删除
            
        
        
  取 消
  确 定

    


    
    
        
        
        
        
        
        
        
        
        
            
        


        
            
        
    
    
    
    

4.后台代码书写

4.1.运行代码生成器MybatisPlusGenerator.java

一键生成

 4.1.TbZoneController.java中编写CRUD

package com.wqg.zone.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wqg.zone.entity.TbZone;
import com.wqg.zone.service.ITbZoneService;
import com.wqg.zone.vo.Result;
import io.swagger.annotations.ApiModelProperty;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;


/**
 * 

 * 专区 前端控制器
 * 
 *
 * @author WQG
 * @since 2023-06-25
 */
@RestController
@RequestMapping("/zone/tb-zone")
public class TbZoneController {

    @Autowired
    private ITbZoneService tbZoneService;


    @ApiModelProperty
    @ApiOperation(value = "分页条件查询")
    @PostMapping("list")
    public Result list2(Integer current , Integer pageSize , @RequestBody TbZone tbZone){
        //分页
        IPage page = new Page<>(current,pageSize);

        //查询条件构造器
        QueryWrapper wrapper = new QueryWrapper<>();
        if (StringUtils.hasText(tbZone.getZoneName())){
            wrapper.like("zone_name",tbZone.getZoneName());
        }
        if (tbZone.getIsDisable() != null){
            wrapper.eq("is_disable",tbZone.getIsDisable());
        }

        IPage userIPage = tbZoneService.page(page,wrapper);
        return new Result(200,"查询成功",userIPage);
    }


    //删除
    @ApiModelProperty
    @ApiOperation(value = "删除")
    @GetMapping("deleteById")
    public Result deleteById(String id){
        boolean i = tbZoneService.removeById(id);
        return i == true ? new Result(200, "删除成功", null) : new Result(500, "删除失败", null);
    }


    //添加
    @ApiModelProperty
    @ApiOperation(value = "添加")
    @PostMapping("add")
    public Result add(@RequestBody TbZone tbZone){
        boolean save = tbZoneService.save(tbZone);
        return save == true ? new Result(200, "添加成功", null) : new Result(500, "添加失败", null);
    }




    //修改
    @ApiModelProperty
    @ApiOperation(value = "修改")
    @PostMapping("update")
    public Result update(@RequestBody TbZone tbZone){
        boolean b = tbZoneService.updateById(tbZone);
        return b == true ? new Result(200, "修改成功", null) : new Result(500, "修改失败", null);
    }


    //根据id修改状态
    @ApiModelProperty
    @ApiOperation(value = "根据id修改状态")
    @PostMapping("updateIsDisable")
    public Result updateIsDisable(String id , Integer isDisable){
        UpdateWrapper wrapper = new UpdateWrapper<>();
        wrapper.eq("id",id);
        wrapper.set("is_disable",isDisable);
        boolean update = tbZoneService.update(wrapper);
        return update == true ? new Result(200, "状态修改成功", null) : new Result(500, "状态修改失败", null);
    }


}

5.项目总览

5.1.包

5.2.最终效果图