1、首先创建一个测试实体类Person，并携带如上注解，其注解的作用描述在message

package com.clickpaas.pojo;

import com.fasterxml.jackson.annotation.JsonFormat;

import lombok.Data;

import org.hibernate.validator.constraints.Length;

import org.hibernate.validator.constraints.Range;

import javax.validation.constraints.*;

import java.math.BigDecimal;

import java.util.Date;

import java.util.List;

/**

* @author 方延杰

* @version 1.0

* @since 2020/12/10 9:04 下午

*/

@Data

public class Person {

@Null(message = "death必须为null")

private String death;

@AssertTrue(message = "bool必须为true")

private boolean bool;

@AssertFalse(message = "fal必须为false")

private boolean fal;

@Min(value = 1, message = "min必须为数字,其值大于或等于指定的最小值")

private Integer min;

@Max(value = 10, message = "max必须为数字,其值小于或等于指定的最大值")

private Integer max;

@DecimalMin(value = "1", message = "minDeci最小不能小于1")

private BigDecimal minDeci;

@DecimalMax(value = "10", message = "maxDeci最大不能大于10")

private BigDecimal maxDeci;

@Size(min = 1, max = 2, message = "list集合的长度最小不能小于1,最大不能大于2")

private List list;

@Digits(integer = 4, fraction = 2, message = "digits整数位不能超过4个,小数位不能超过2个")

private BigDecimal digits;

/**

* 将前台传来的日期数据映射到此字段

*/

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")

@Past(message = "past必须为过去的日期")

private Date past;

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")

@Future(message = "future必须为将来的日期")

private Date future;

@Pattern(regexp = "^1[3|4|5|7|8][0-9]{9}$", message = "phone必须符合正则表达式")

private String phone;

@Email(message = "email必须是邮箱格式")

private String email;

@Length(min = 1, max = 2, message = "length长度最小不能小于1,最大不能大于2")

private String length;

@NotEmpty(message = "id不能为null，长度大于0")

private String id;

@Range(min = 1, max = 12, message = "month最小不能小于1,最大不能大于12")

private Integer month;

@NotBlank(message = "name不能为null,字段串长度大于0(限字符串)")

private String name;

}

2、封装返回响应体

package com.clickpaas.response;

import lombok.AllArgsConstructor;

import lombok.Data;

/**

* @author 方延杰

* @version 1.0

* @since 2019/7/3 4:32 下午

*/

@Data

@AllArgsConstructor

public class CodeMsg {

private int code;

private String msg;

/**

* 失败

*/

public static CodeMsg SERVER_ERROR = new CodeMsg(500, "服务端异常");

}

package com.clickpaas.response;

import lombok.AllArgsConstructor;

import lombok.Data;

/**

* @author 方延杰

* @version 1.0

* @since 2019/7/3 4:35 下午

*/

@Data

@AllArgsConstructor

public class Result {

/**

* 返回状态码 除200其余全部失败

*/

private int code;

/**

* 返回信息 除success其余全部失败

*/

private String msg;

/**

* 泛型数据

*/

private T data;

/**

* 成功时返回的类型

*

* @param data 数据

* @param 泛型

* @return 泛型数据

*/

public static Result success(T data) {

return new Result<>(200, "success", data);

}

public static Result fail(CodeMsg codeMsg) {

return new Result<>(codeMsg);

}

private Result(CodeMsg codeMsg) {

if (codeMsg == null) {

return;

}

this.code = codeMsg.getCode();

this.msg = codeMsg.getMsg();

}

}

3、创建使用增强器拦截并返回异常信息

package com.clickpaas.config;

import com.clickpaas.response.CodeMsg;

import com.clickpaas.response.Result;

import org.springframework.web.bind.MethodArgumentNotValidException;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;

import java.util.Objects;

/**

* @author 方延杰

* @version 1.0

* @since 2018/12/10 4:59 下午

*/

@RestControllerAdvice

public class GlobalExceptionInterceptor {

@ExceptionHandler(value = MethodArgumentNotValidException.class)

public Result exceptionHandler(HttpServletRequest request, Exception e) {

String errMsg = "处理失败";

if (e instanceof MethodArgumentNotValidException) {

// 拿到参数校验具体异常信息

errMsg = Objects.requireNonNull(((MethodArgumentNotValidException) e).getBindingResult().getFieldError()).getDefaultMessage();

}

return Result.fail(new CodeMsg(500, errMsg));

}

}

4、创建控制层测试

package com.clickpaas.controller;

import com.clickpaas.pojo.Person;

import org.springframework.validation.annotation.Validated;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RestController;

/**

* @author 方延杰

* @version 1.0

* @since 2020/12/10 9:03 下午

*/

@RestController

public class ValidController {

@PostMapping("/valid")

public String valid(@Validated @RequestBody Person person) {

return "success";

}

}

5、测试符合验证请求体访问，请求体如下：

{

"death":null,

"bool":true,

"fal":false,

"min":1,

"max":10,

"minDeci":1,

"maxDeci":10,

"list":[

{},{}

],

"digits":1144.12,

"past":"2020-10-01 10:00:00",

"future":"2022-10-01 10:00:00",

"phone":"15900445584",

"email":"yanjie.fang@clickpaas.com",

"length":"ab",

"id":" ",

"name":"a"

}

6、故意修改不符合验证的数据

7、如果想做整体验证，如下：

package com.clickpaas.uitl;

import javax.validation.ConstraintViolation;

import javax.validation.Validation;

import javax.validation.Validator;

import java.util.List;

import java.util.Set;

import java.util.stream.Collectors;

/**

* Bean整体校验工具类

*

* @author 方延杰

* @version 1.0

* @since 2020/12/10 10:08 下午

*/

public class ValidatorUtils {

private static final Validator VALIDATOR = Validation.buildDefaultValidatorFactory().getValidator();

/**

* Bean整体校验，有不合规范，拼接message

*/

public static String validate(Object obj, Class>... groups) {

StringBuilder errorMessage = new StringBuilder();

Set> resultSet = VALIDATOR.validate(obj, groups);

if (resultSet.size() > 0) {

//如果存在错误结果，则将其解析并进行拼凑后异常抛出

List errorMessageList = resultSet.stream().map(ConstraintViolation::getMessage).collect(Collectors.toList());

errorMessageList.forEach(o -> errorMessage.append(o).append(";"));

}

return errorMessage.toString();

}

}

8、整体测试类

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