新增和修改

# 一、自动填充

# 1、guli-framework-common中添加依赖

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

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# 2、配置MP自动填充处理器

guli-framework-common中创建com.guli.common.handler包，

创建自动填充处理类CommonMetaObjectHandler.java：

package com.guli.common.handler;

@Component
@Slf4j
public class CommonMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insert fill ....");
        this.setFieldValByName("gmtCreate", new Date(), metaObject);
        this.setFieldValByName("gmtModified", new Date(), metaObject);
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("start update fill ....");
        this.setFieldValByName("gmtModified", new Date(), metaObject);
    }
}

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# 3、扫描自动填充处理器

在EduApplication.java上添加注解@ComponentScan

@SpringBootApplication
@ComponentScan(basePackages={"com.guli.edu","com.guli.common"})
public class EduApplication {

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# 二、controller方法定义

# 1、新增

    @ApiOperation(value = "新增讲师")
    @PostMapping
    public R save(
            @ApiParam(name = "teacher", value = "讲师对象", required = true)
            @RequestBody Teacher teacher){

        teacherService.save(teacher);
        return R.ok();
    }

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# 2、根据id查询

@ApiOperation(value = "根据ID查询讲师")
    @GetMapping("{id}")
    public R getById(
            @ApiParam(name = "id", value = "讲师ID", required = true)
            @PathVariable String id){

        Teacher teacher = teacherService.getById(id);
        return R.ok().data("item", teacher);
    }

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# 3、根据id修改

@ApiOperation(value = "根据ID修改讲师")
@PutMapping("{id}")
public R updateById(
    @ApiParam(name = "id", value = "讲师ID", required = true)
    @PathVariable String id,

    @ApiParam(name = "teacher", value = "讲师对象", required = true)
    @RequestBody Teacher teacher){

    teacher.setId(id);
    teacherService.updateById(teacher);
    return R.ok();
}

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编辑

上次更新: 2024/06/15, 15:12:25

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