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在做项目的时候需要对自定义异常做捕获和处理，现在将代码记录下来便于以后查阅。

1、全局异常捕捉处理

@ControllerAdvice（annotations = {RestController.class}
）
public class ExceptionHandlerAdvice {private static final Logger LOGGER = LoggerFactory.getLogger(this.getCLass());@ExceptionHandler(EntityTransException.class)public ResponseResult entityTransExceptionHandle(HttpServletRequest request,EntityTransException e){LOGGER.error("********************Throw EntityTransException.url:{} ERROR:{}********************",request.getRequestURL(), e.getMessage(), e);ResponseResult result = new ResponseResult();result.setSuccess(false);result.setMessage(ResultCode.ERROR_ENTITY_TRANS.getMessage() + "。异常原因：" + e.getMessage());result.setCode(ResultCode.ERROR_ENTITY_TRANS.getCode());return result;}@ExceptionHandler(SqlException.class)public ResponseResult sqlExceptionHandle(HttpServletRequest request,SqlException e){LOGGER.error("********************Throw SqlException.url:{} ERROR:{}********************",request.getRequestURL(), e.getMessage(), e);ResponseResult result = new ResponseResult();result.setSuccess(false);result.setMessage(ResultCode.ERROR_SQL_CHECK.getMessage() + "。异常原因：" + e.getMessage());result.setCode(ResultCode.ERROR_SQL_CHECK.getCode());return result;}@ExceptionHandler(Exception.class)public ResponseResult exceptionHandle(HttpServletRequest request,Exception e){LOGGER.error("********************Throw Exception.url:{} ERROR:{}********************",request.getRequestURL(), e.getMessage(), e);ResponseResult result = new ResponseResult();result.setSuccess(false);result.setMessage(ResultCode.ERROR.getMessage());result.setCode(ResultCode.ERROR.getCode());return result;}
}

2、自定义异常类

package com.czgo.exception;/*** 自定义异常类(继承运行时异常)* @author zhangzhixiang* @version 2018/11/09*/
public class SqlException extends RuntimeException {private static final long serialVersionUID = 1L;/*** 错误编码*/private String errorCode;/*** 消息是否为属性文件中的Key*/private boolean propertiesKey = true;/*** 构造一个基本异常.** @param cause 异常信息*            */public SqlException(Throwable cause){super(cause);}/*** 构造一个基本异常.** @param message 信息描述*            */public SqlException(String message){super(message);}/*** 构造一个基本异常.** @param errorCode 错误编码* @param message 信息描述*            */public SqlException(String errorCode, String message){this(errorCode, message, true);}/*** 构造一个基本异常.** @param errorCode 错误编码* @param message *                 */public SqlException(String errorCode, String message, Throwable cause){this(errorCode, message, cause, true);}/*** 构造一个基本异常.** @param errorCode 错误编码* @param message 信息描述* @param propertiesKey 消息是否为属性文件中的Key*            */public SqlException(String errorCode, String message, boolean propertiesKey){super(message);this.setErrorCode(errorCode);this.setPropertiesKey(propertiesKey);}/*** 构造一个基本异常.** @param errorCode 错误编码* @param message 信息描述*            */public SqlException(String errorCode, String message, Throwable cause, boolean propertiesKey){super(message, cause);this.setErrorCode(errorCode);this.setPropertiesKey(propertiesKey);}/*** 构造一个基本异常.** @param message 信息描述* @param cause 根异常类（可以存入任何异常）*            */public SqlException(String message, Throwable cause){super(message, cause);}public String getErrorCode(){return errorCode;}public void setErrorCode(String errorCode){this.errorCode = errorCode;}public boolean isPropertiesKey(){return propertiesKey;}public void setPropertiesKey(boolean propertiesKey){this.propertiesKey = propertiesKey;}}

3、Controller层

@RestController
@RequestMapping("/user")
public class FileController extends ExceptionHandlerAdvice {private final Logger logger = LoggerFactory.getLogger(this.getClass());@RequestMapping(value = "/selectByCondition", method = RequestMethod.POST)public ResponseResult selectByCondition() throws Exception {throw new EntityTransException("这是一个自定义实体转换异常，这条异常会在ExceptionHandlerAdvice的entityTransExceptionHandle方法中被拦截");}@RequestMapping(value = "/update", method = RequestMethod.POST)public ResponseResult update() throws Exception {throw new SqlException("这是一个自定义SQL异常，这条异常会在ExceptionHandlerAdvice的sqlExceptionHandle方法中被拦截");}}

4、封装返回实体

public class ResponseResult implements Serializable {private static final long serialVersionUID = 6054052582421291408L;private String message;private Object data;private int code;private boolean success;private Long total;public ResponseResult(){}public ResponseResult(boolean success, Object data) {this.success = success;this.data = data;}public ResponseResult(boolean success, String message, Object data) {this.success = success;this.message = message;this.data = data;}public String getMessage() {return message;}public ResponseResult setMessage(String message) {this.message = message;return this;}public Object getData() {return data;}public ResponseResult setData(Object data) {this.data = data;return this;}public boolean getSuccess() {return success;}public ResponseResult setSuccess(boolean success) {this.success = success;return this;}public int getCode() {return code;}public ResponseResult setCode(int code) {this.code = code;return this;}public Long getTotal() {return success;}public ResponseResult setTotal(Long total) {this.total = total;return this;}}

5、补充

@ControllerAdvice（annotations = {RestController.class}
）
public class ExceptionHandlerAdvice {private static final Logger LOGGER = LoggerFactory.getLogger(ExceptionHandlerAdvice.class);/*** 400错误** @param e* @return java.lang.ResponseResult* @author zxzhang* @date 2019/6/27*/@ExceptionHandler({HttpMessageNotReadableException.class, TypeMismatchException.class, MissingServletRequestParameterException.class})public ResponseResult requestNotReadable(HttpServletRequest request, HttpMessageNotReadableException e) {return resultFormat(request, ResponseEnum.RESPONSE_CODE_PARAM_ERR, e);}/*** 404错误** @param e* @return java.lang.ResponseResult* @author zxzhang* @date 2019/6/27*/@ExceptionHandler({NoHandlerFoundException.class})public ResponseResult requestNotReadable(HttpServletRequest request, NoHandlerFoundException e) {return resultFormat(request, ResponseEnum.RESPONSE_CODE_NOT_FOUND, e);}/*** 405错误** @param e* @return java.lang.ResponseResult* @author zxzhang* @date 2019/6/27*/@ExceptionHandler({HttpRequestMethodNotSupportedException.class})public ResponseResult request405(HttpServletRequest request, HttpRequestMethodNotSupportedException e) {return resultFormat(request, ResponseEnum.RESPONSE_CODE_METHOD_NOT_SUPPORT, e);}/*** 406错误** @param e* @return java.lang.ResponseResult* @author zxzhang* @date 2019/6/27*/@ExceptionHandler({HttpMediaTypeNotAcceptableException.class})public ResponseResult request406(HttpServletRequest request, HttpMediaTypeNotAcceptableException e) {return resultFormat(request, ResponseEnum.RESPONSE_CODE_TYPE_NOT_ACCEPTABLE, e);}/*** Throwable拦截器** @param request* @param e* @return com.openailab.oascloud.common.model.ResponseResult* @author zxzhang* @date 2019/6/27*/@ExceptionHandler(Throwable.class)public ResponseResult exceptionHandle(HttpServletRequest request, Throwable e) {return resultFormat(request, ResponseEnum.RESPONSE_CODE_FAIL, e);}/*** 格式封装** @param request* @param responseEnum* @param e* @return com.openailab.oascloud.common.model.ResponseResult* @author zxzhang* @date 2019/6/27*/private ResponseResult resultFormat(HttpServletRequest request, ResponseEnum responseEnum, Throwable e) {LOGGER.error("********************Throw Exception.url:{} ERROR:{}********************", request.getRequestURL(), e.getMessage(), e);ResponseResult result = new ResponseResult();result.setstatus(CommonConst.RESPONSE_FAIL);result.setMessage(responseEnum.getMsg());result.setCode(responseEnum.getCode());return result;}
}

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