@Valid,@Validated参数校验

@Valid校验

@RestController
@RequestMapping("/test")
public class TRestController{
  //接口参数校验
　　@PostMapping("add")
   public ApiResponse add(@RequestBody @Valid User user){
    ...........
   }
}
//接收参数对象，校验入参
@Data
public class User{
    @NotNull(message = "不能为空") //校验规则
    private Long id;
    ......
    @Valid   //嵌套校验
    private UserData userData;
}

@Validated校验基本类型入参

@RestController
@RequestMapping("/test")
@Validated  //表示注解校验生效
public class TRestController{
   //接口参数校验
　//@NotNull  用于校验方法参数
  @PostMapping("add")
  public ApiResponse add( @RequestParam @NotNull(message="不能为空") String userName){
　　 ...........
 　}
}

@Validated分组校验

@RestController
@RequestMapping("/test")
public class TRestController{
   //接口参数校验
　//@Validated(Add.class) Add分组参数校验
  @PostMapping("add")
  public ApiResponse add( @RequestParam @Validated(Add.class) User user){
　　 ...........
 　}
  //@Validated(Update.class) Update分组参数校验
  @PostMapping("update")
  public ApiResponse update( @RequestParam @Validated(Update.class) User user){
　　 ...........
 　}
}

public class User{
   @NotNull(message="不能为空",groups={Add.class,Update.class})
   private String name;    
   .......
}
// 定义校验分组
public interface Add{}
// 定义校验分组
public interface Update{}

自定义注解校验

//定义注解
@Target({ElementType.METHOD,ElementType.FIELD,ElementType.ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = EnumCheckValidator.class)
public @interface EnumCheck {
    String message() default "";

    Class<?>[] groups() default { };

    Class<? extends Payload>[] payload() default { };

    Class<? extends Enum<?>> enumClass();

    String enumMethod();
}
//自定义校验规则类
public class EnumCheckValidator implements ConstraintValidator<EnumCheck,String> {
    @Override
    public void initialize(EnumCheck enumCheck) {//初始化方法
        .......
    }
    @Override
    public boolean isValid(String value, ConstraintValidatorContext constraintValidatorContext) { //实现校验规则
       ......
    }
}

//自定义注解使用
public class User{
   @EnumCheck(message="",......)
   private String userName;
   ......
}