1、首先創(chuàng)建一個(gè)測(cè)試實(shí)體類Person，并攜帶如上注解，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 */@Datapublic class Person { @Null(message = 'death必須為null') private String death; @AssertTrue(message = 'bool必須為true') private boolean bool; @AssertFalse(message = 'fal必須為false') private boolean fal; @Min(value = 1, message = 'min必須為數(shù)字,其值大于或等于指定的最小值') private Integer min; @Max(value = 10, message = 'max必須為數(shù)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集合的長(zhǎng)度最小不能小于1,最大不能大于2') private List<Object> list; @Digits(integer = 4, fraction = 2, message = 'digits整數(shù)位不能超過(guò)4個(gè),小數(shù)位不能超過(guò)2個(gè)') private BigDecimal digits; /** * 將前臺(tái)傳來(lái)的日期數(shù)據(jù)映射到此字段 */ @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = 'yyyy-MM-dd HH:mm:ss', timezone = 'GMT+8') @Past(message = 'past必須為過(guò)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必須為將來(lái)的日期') private Date future; @Pattern(regexp = '^1[3|4|5|7|8][0-9]{9}$', message = 'phone必須符合正則表達(dá)式') private String phone; @Email(message = 'email必須是郵箱格式') private String email; @Length(min = 1, max = 2, message = 'length長(zhǎng)度最小不能小于1,最大不能大于2') private String length; @NotEmpty(message = 'id不能為null，長(zhǎng)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不能為null,字段串長(zhǎng)度大于0（限字符串）') private String name;}

2、封裝返回響應(yīng)體

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@AllArgsConstructorpublic class CodeMsg { private int code; private String msg; /** * 失敗 */ public static CodeMsg SERVER_ERROR = new CodeMsg(500, '服務(wù)端異常');}

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@AllArgsConstructorpublic class Result<T> { /** * 返回狀態(tài)碼 除200其余全部失敗 */ private int code; /** * 返回信息 除success其余全部失敗 */ private String msg; /** * 泛型數(shù)據(jù) */ private T data; /** * 成功時(shí)返回的類型 * * @param data 數(shù)據(jù) * @param <T> 泛型 * @return 泛型數(shù)據(jù) */ public static <T> Result<T> success(T data) { return new Result<>(200, 'success', data); } public static <T> Result<T> fail(CodeMsg codeMsg) { return new Result<>(codeMsg); } private Result(CodeMsg codeMsg) { if (codeMsg == null) { return; } this.code = codeMsg.getCode(); this.msg = codeMsg.getMsg(); }}

3、創(chuàng)建使用增強(qiáng)器攔截并返回異常信息

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 */@RestControllerAdvicepublic class GlobalExceptionInterceptor { @ExceptionHandler(value = MethodArgumentNotValidException.class) public Result<Object> exceptionHandler(HttpServletRequest request, Exception e) { String errMsg = '處理失敗'; if (e instanceof MethodArgumentNotValidException) { // 拿到參數(shù)校驗(yàn)具體異常信息 errMsg = Objects.requireNonNull(((MethodArgumentNotValidException) e).getBindingResult().getFieldError()).getDefaultMessage(); } return Result.fail(new CodeMsg(500, errMsg)); }}

4、創(chuàng)建控制層測(cè)試

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 */@RestControllerpublic class ValidController { @PostMapping('/valid') public String valid(@Validated @RequestBody Person person) { return 'success'; }}

5、測(cè)試符合驗(yàn)證請(qǐng)求體訪問(wèn)，請(qǐng)求體如下：

{ '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':'[email protected]', 'length':'ab', 'id':' ', 'name':'a'}

6、故意修改不符合驗(yàn)證的數(shù)據(jù)

7、如果想做整體驗(yàn)證，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整體校驗(yàn)工具類 * * @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整體校驗(yàn)，有不合規(guī)范，拼接message */ public static String validate(Object obj, Class<?>... groups) { StringBuilder errorMessage = new StringBuilder(); Set<ConstraintViolation<Object>> resultSet = VALIDATOR.validate(obj, groups); if (resultSet.size() > 0) { //如果存在錯(cuò)誤結(jié)果，則將其解析并進(jìn)行拼湊后異常拋出 List<String> errorMessageList = resultSet.stream().map(ConstraintViolation::getMessage).collect(Collectors.toList()); errorMessageList.forEach(o -> errorMessage.append(o).append(';')); } return errorMessage.toString(); }}

8、整體測(cè)試類

到此這篇關(guān)于詳解Java后端優(yōu)雅驗(yàn)證參數(shù)合法性的文章就介紹到這了,更多相關(guān)Java 驗(yàn)證參數(shù)合法性內(nèi)容請(qǐng)搜索好吧啦網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持好吧啦網(wǎng)！