文章目錄

• • • • • • 1. 引入依賴
          • 2. 校驗(yàn)規(guī)則
          • 3. 規(guī)則使用
          • 4. 自定義異常類
          • 5. 統(tǒng)一返回對(duì)象封裝
          • 6. 統(tǒng)一異常對(duì)象
          • 7. 統(tǒng)一異常枚舉
          • 8. 前端form表單輸入，自動(dòng)觸發(fā)校驗(yàn)

1. 引入依賴

<!--參數(shù)校驗(yàn)--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-validation</artifactId></dependency>

2. 校驗(yàn)規(guī)則

@NotNull(message = "【每頁(yè)頁(yè)碼】不能為空")private int page;@NotNull(message = "【每頁(yè)條數(shù)】不能為空")@Max(value = 100,message = "【每頁(yè)條數(shù)】不能超過(guò)100")

3. 規(guī)則使用

public CommonResp list(@Valid EbookQueryReq req) {}

4. 自定義異常類

package com.jiawa.wiki.controller;import com.jiawa.wiki.exception.BusinessException; import com.jiawa.wiki.resp.CommonResp; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.validation.BindException; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody;/*** 統(tǒng)一異常處理、數(shù)據(jù)預(yù)處理等*/ @ControllerAdvice public class ControllerExceptionHandler {private static final Logger LOG = LoggerFactory.getLogger(ControllerExceptionHandler.class);/*** 校驗(yàn)異常統(tǒng)一處理* @param e* @return*/@ExceptionHandler(value = BindException.class)@ResponseBodypublic CommonResp validExceptionHandler(BindException e) {CommonResp commonResp = new CommonResp();LOG.warn("參數(shù)校驗(yàn)失敗：{}", e.getBindingResult().getAllErrors().get(0).getDefaultMessage());commonResp.setSuccess(false);commonResp.setMessage(e.getBindingResult().getAllErrors().get(0).getDefaultMessage());return commonResp;}

5. 統(tǒng)一返回對(duì)象封裝

package com.jiawa.wiki.resp;public class CommonResp<T> {/*** 業(yè)務(wù)上的成功或失敗*/private boolean success = true;/*** 返回信息*/private String message;/*** 返回泛型數(shù)據(jù)，自定義類型*/private T content;public boolean getSuccess() {return success;}public void setSuccess(boolean success) {this.success = success;}public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}public T getContent() {return content;}public void setContent(T content) {this.content = content;}@Overridepublic String toString() {final StringBuffer sb = new StringBuffer("ResponseDto{");sb.append("success=").append(success);sb.append(", message='").append(message).append('\'');sb.append(", content=").append(content);sb.append('}');return sb.toString();} }

6. 統(tǒng)一異常對(duì)象

package com.jiawa.wiki.exception;public class BusinessException extends RuntimeException{private BusinessExceptionCode code;public BusinessException (BusinessExceptionCode code) {super(code.getDesc());this.code = code;}public BusinessExceptionCode getCode() {return code;}public void setCode(BusinessExceptionCode code) {this.code = code;}/*** 不寫(xiě)入堆棧信息，提高性能*/@Overridepublic Throwable fillInStackTrace() {return this;} }

7. 統(tǒng)一異常枚舉

package com.jiawa.wiki.exception;public enum BusinessExceptionCode {USER_LOGIN_NAME_EXIST("登錄名已存在"),LOGIN_USER_ERROR("用戶名不存在或密碼錯(cuò)誤"),VOTE_REPEAT("您已點(diǎn)贊過(guò)"),;private String desc;BusinessExceptionCode(String desc) {this.desc = desc;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;} }

8. 前端form表單輸入，自動(dòng)觸發(fā)校驗(yàn)

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