coding++：java-全局异常处理
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本次使用工具：SpringBoot <version>1.5.19.RELEASE</version>
Code：
AbstractException：
package mlq.global.anomaly.exception;
import mlq.global.anomaly.utils.ErrorPrintUtils;
public abstract class AbstractException extends RuntimeException {
private static final long serialVersionUID = -5992753399315247713L;
private String errorCode;
private String errorMsg;
private String stackTraceMsg;
private String level;
private String messageID;
private boolean sendMsg = true;
public AbstractException(String code, String message, String... level) {
super(code + "|" + message);
this.handleExceptionMessage(code, message, code + "|" + message);
}
public AbstractException(String code, String message, Throwable th) {
super(code + "|" + message, th);
this.handleExceptionMessage(code, message, ErrorPrintUtils.printStackTrace(th));
}
public final void handleExceptionMessage(String code, String message, String stackTraceMsg) {
this.errorCode = code;
this.errorMsg = message;
this.stackTraceMsg = stackTraceMsg;
}
public AbstractException(Throwable cause) {
super(cause);
ErrorDesc errorDesc = this.getErrorDesc(cause);
if (errorDesc != null) {
this.errorCode = errorDesc.errorCode;
this.errorMsg = errorDesc.errorMsg;
}
}
public AbstractException(String message) {
super(message);
}
public abstract ErrorDesc getErrorDesc(Throwable var1);
public String getErrorCode() {
return this.errorCode;
}
public String getErrorMsg() {
return this.errorMsg;
}
public void setErrorCode(String errorCode) {
this.errorCode = errorCode;
}
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
public String getStackTraceMsg() {
return this.stackTraceMsg;
}
public void setStackTraceMsg(String stackTraceMsg) {
this.stackTraceMsg = stackTraceMsg;
}
public String getLevel() {
return this.level;
}
public void setLevel(String level) {
this.level = level;
}
public String getMessageID() {
return this.messageID;
}
public void setMessageID(String messageID) {
this.messageID = messageID;
}
public boolean isSendMsg() {
return this.sendMsg;
}
public void setSendMsg(boolean sendMsg) {
this.sendMsg = sendMsg;
}
public static class ErrorDesc {
public String errorCode;
public String errorMsg;
public ErrorDesc(String errorCode, String errorMsg) {
this.errorCode = errorCode;
this.errorMsg = errorMsg;
}
}
}
NoveControllerException：
package mlq.global.anomaly.exception;
public class NoveControllerException extends AbstractException {
private static final long serialVersionUID = 8307533385237791476L;
public NoveControllerException(String code, String message) {
super(code, message, new String[0]);
}
public NoveControllerException(String code, String message, Throwable th) {
super(code, message, th);
}
public AbstractException.ErrorDesc getErrorDesc(Throwable var1) {
return null;
}
}
CustomException：
package mlq.global.anomaly.exception;
/**
* 自定义 异常类
*/
public class CustomException extends NoveControllerException {
private static final long serialVersionUID = 1L;
public CustomException(String code, String message) {
super(code, message);
}
public CustomException(String code, String message, Throwable th) {
super(code, message, th);
}
}
JsonException：
package mlq.global.anomaly.exception;
/**
* 自定义 JsonException
*/
public class JsonException extends NoveControllerException {
private static final long serialVersionUID = -5605565877150120787L;
public JsonException(String code, String message) {
super(code, message);
}
public JsonException(String code, String message, Throwable th) {
super(code, message, th);
}
}
ErrorPrintUtils:
package mlq.global.anomaly.utils;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
public class ErrorPrintUtils {
public ErrorPrintUtils() {
}
public static String printStackTrace(Throwable exception) {
StringWriter sw = null;
PrintWriter pw = null;
try {
sw = new StringWriter();
pw = new PrintWriter(sw);
exception.printStackTrace(pw);
} finally {
if (sw != null) {
try {
sw.close();
} catch (IOException var8) {
;
}
}
if (pw != null) {
pw.close();
}
}
return sw.toString();
}
}
GlobalExceptionHandler:
package mlq.global.anomaly.exception;
import com.alibaba.fastjson.JSONException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* 全局异常类
*/
@ControllerAdvice
public class GlobalExceptionHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(GlobalExceptionHandler.class);
@ExceptionHandler(value = Exception.class)
public ModelAndView defaultErrorHandler(HttpServletRequest request, HttpServletResponse response, Exception e) throws Exception {
LOGGER.info("Exception异常");
LOGGER.info("RequestURL:url={}", request.getRequestURL());
LOGGER.error("请求地址:url={},系统异常:error={}", request.getRequestURL(), e);
if (!checkAjaxRequest(request)) {
ModelAndView mav = new ModelAndView("500");
mav.addObject("exception", e);
mav.addObject("reqUrl", request.getRequestURL());
return mav;
} else {
ModelAndView mv = new ModelAndView();
// 设置状态码
response.setStatus(HttpStatus.OK.value());
// 设置ContentType
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
// 设置编码格式 避免乱码
response.setCharacterEncoding("UTF-8");
// 头部响应信息
response.setHeader("Cache-Control", "no-cache, must-revalidate");
// 返回结果
response.getWriter().write("{\\"resultCode\\":500,\\"message\\":\\"" + e.getMessage() + "\\"}");
return mv;
}
}
/**
* 自定义异常
*
* @throws Exception
*/
@ExceptionHandler(value = CustomException.class)
public ModelAndView callCenterHandler(HttpServletRequest req, HttpServletResponse response, Exception e) throws Exception {
LOGGER.info("自定义异常");
LOGGER.info("RequestURL:url={}", req.getRequestURL());
LOGGER.error("请求地址:url={},CallCenterException异常:error={}", req.getRequestURL(), e);
if (!checkAjaxRequest(req)) {
ModelAndView mav = new ModelAndView("500");
mav.addObject("exception", e.getMessage());
mav.addObject("reqUrl", req.getRequestURL());
return mav;
} else {
ModelAndView mv = new ModelAndView();
response.setStatus(HttpStatus.OK.value());
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
response.setCharacterEncoding("UTF-8");
response.setHeader("Cache-Control", "no-cache, must-revalidate");
response.getWriter().write("{\\"resultCode\\":500,\\"message\\":\\"" + e.getMessage() + "\\"}");
return mv;
}
}
@ExceptionHandler(value = JsonException.class)
@ResponseBody
public Map<String, Object> jsonErrorHandler(HttpServletRequest req, JsonException e) throws Exception {
LOGGER.info("JSON异常");
LOGGER.info("RequestURL={}", req.getRequestURL());
LOGGER.error("请求地址:url={},ajax请求异常:error={}", req.getRequestURL(), e);
Map<String, Object> map = Collections.synchronizedMap(new HashMap<String, Object>());
map.put("resultCode", 500);
map.put("message", e.getMessage());
return map;
}
/**
* 判断是否ajax请求
*
* @param request
* @return
*/
private boolean checkAjaxRequest(HttpServletRequest request) {
String requestType = request.getHeader("X-Requested-With");
if (!ObjectUtils.isEmpty(requestType) && "XMLHttpRequest".equals(requestType)) {
return true;
}
return false;
}
}
提示：在没有异常自行处理的时候 就会走全局异常类
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