springboot validation 分组验证

╰+哭是因爲堅強的太久メ 2023-02-26 06:26 18阅读 0赞

--------------------

### springboot validation 分组验证 ###

**应用：同一个pojo在不同的场景下，使用分组对field进行不同的验证**

### \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ###

**示例**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**pojo 层**

**Num**

@Data
    public class Num {
    
        public interface Base{
    
        }
    
        public interface Sub extends Base{
    
        }
    
        public interface Sub2 extends Base{
    
        }
    
        @NotBlank(message = "id 不能为 null")
        private String id;
    
        @Min(value = 2,message = "base 不能小于 2",groups = {Base.class})
        private Integer base;
    
        @Min(value = 2,message = "num 不能小于2",groups = {Sub.class})
        private Integer num;
    
        @Min(value = 2,message = "num2 不能小于 2",groups = {Sub2.class})
        private Integer num2;
    }

**@NotBlank表示不为空，@NotNull表示不为null，两者不一样**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**controller 层**

**HelloController**

@RestController
    public class HelloController {
    
        @RequestMapping("/hello2")
        public String hello2(@Validated Num num, BindingResult result){
            System.out.println("hello2："+num);
    
            if (result.hasFieldErrors()){
                result.getFieldErrors().forEach(error -> {
                    System.out.print("field："+error.getField());
                    System.out.println(" ==> message："+error.getDefaultMessage());
                });
            }
    
            return "success";
        }
    
        @RequestMapping("/hello3")
        public String hello3(@Validated({Num.Sub.class}) Num num, BindingResult result){
            System.out.println("hello3："+num);
    
            if (result.hasFieldErrors()){
                result.getFieldErrors().forEach(error -> {
                    System.out.print("field："+error.getField());
                    System.out.println(" ==> message："+error.getDefaultMessage());
                });
            }
    
            return "success";
        }
    
        @RequestMapping("/hello4")
        public String hello4(@Validated(Num.Sub2.class) Num num, BindingResult result){
            System.out.println("hello4："+num);
    
            if (result.hasFieldErrors()){
                result.getFieldErrors().forEach(error -> {
                    System.out.print("field："+error.getField());
                    System.out.println(" ==> message："+error.getDefaultMessage());
                });
            }
    
            return "success";
        }
    
        @RequestMapping("/hello5")
        public String hello5(@Validated(Num.Base.class) Num num, BindingResult result){
            System.out.println("hello5："+num);
    
            if (result.hasFieldErrors()){
                result.getFieldErrors().forEach(error -> {
                    System.out.print("field："+error.getField());
                    System.out.println(" ==> message："+error.getDefaultMessage());
                });
            }
    
            return "success";
        }
    }

### \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ###

**使用测试：id（无分组），base（base）、num（sub）、num2（sub2），sub、sub继承base**

**localhost:8080/hello2?id=&base=0&num=0&num2=0**

2020-07-14 17:34:07.552  INFO 13896 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
    2020-07-14 17:34:07.559  INFO 13896 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 7 ms
    hello2：Num(id=, base=0, num=0, num2=0)
    field：id ==> message：id 不能为 null

**@Validated没有指定分组，****只对id进行了检验**

**localhost:8080/hello3?id=&base=0&num=0&num2=0**

2020-07-14 17:39:28.164  INFO 12556 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
    2020-07-14 17:39:28.168  INFO 12556 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 4 ms
    hello3：Num(id=, base=0, num=0, num2=0)
    field：num ==> message：num 不能小于2
    field：base ==> message：base 不能小于 2

**@Validated指定分组sub，对base、num进行检验**

**localhost:8080/hello4?id=&base=0&num=0&num2=0**

2020-07-14 17:44:40.835  INFO 15112 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
    2020-07-14 17:44:40.839  INFO 15112 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 4 ms
    hello4：Num(id=, base=0, num=0, num2=0)
    field：base ==> message：base 不能小于 2
    field：num2 ==> message：num2 不能小于 2

**@Validated指定分组sub2，对base、num2进行检验**

**localhost:8080/hello5?id=&base=0&num=0&num2=0**

2020-07-14 17:46:26.017  INFO 13124 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
    2020-07-14 17:46:26.021  INFO 13124 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 4 ms
    hello5：Num(id=, base=0, num=0, num2=0)
    field：base ==> message：base 不能小于 2

**@Validated指定分组base，对base进行检验**