控制器注解参数判空

控制器注解参数判空

1. 调用效果展示

## 正常
{
    "id": 14,
    "name": "张三",
    "sex": "男"
}
 
## 姓名不能为空
{
    "code": -1,
    "message": "姓名不能为空",
    "data": null
}
 
## 性别不能为空
{
    "code": -1,
    "message": "性别不能为空",
    "data": null
}

---

2. 代码实现

// 实体类
@Data
@Validated
public class StudentVo {
    private Integer id;
    @NotNull(message = "姓名不能为空")
    private String name;
    @NotNull(message = "性别不能为空")
    private String sex;
}
 
// 控制器
@RestController
@RequestMapping("/stu")
public class StudentController {
 
    @PostMapping("/getUser")
    public StudentVo studentVo(@Valid @RequestBody StudentVo studentVo) {
        StudentVo studentVo1 = new StudentVo();
        studentVo1.setId(studentVo.getId());
        studentVo1.setName(studentVo.getName());
        studentVo1.setSex(studentVo.getSex());
 
        return studentVo1;
    }
}

---

4. 引入Jar包
   • spring-boot-starter-parent
   • lombok