公司建设官方网站需要多少钱,厦门网站制作方案,企信网企业信用信息系统贵州,企业网站源码库为什么80%的码农都做不了架构师#xff1f; ##序 使用zuul作为api网关的话#xff0c;经常会碰见一些异常#xff0c;这里小结一下。 ##ZuulException 这个是最外层的异常 public class ZuulException extends Exception {public int nStatusCode;public Str… 为什么80%的码农都做不了架构师 ##序 使用zuul作为api网关的话经常会碰见一些异常这里小结一下。 ##ZuulException 这个是最外层的异常 public class ZuulException extends Exception {public int nStatusCode;public String errorCause;/*** Source Throwable, message, status code and info about the cause* param throwable* param sMessage* param nStatusCode* param errorCause*/public ZuulException(Throwable throwable, String sMessage, int nStatusCode, String errorCause) {super(sMessage, throwable);this.nStatusCode nStatusCode;this.errorCause errorCause;incrementCounter(ZUUL::EXCEPTION: errorCause : nStatusCode);}/*** error message, status code and info about the cause* param sMessage* param nStatusCode* param errorCause*/public ZuulException(String sMessage, int nStatusCode, String errorCause) {super(sMessage);this.nStatusCode nStatusCode;this.errorCause errorCause;incrementCounter(ZUUL::EXCEPTION: errorCause : nStatusCode);}/*** Source Throwable, status code and info about the cause* param throwable* param nStatusCode* param errorCause*/public ZuulException(Throwable throwable, int nStatusCode, String errorCause) {super(throwable.getMessage(), throwable);this.nStatusCode nStatusCode;this.errorCause errorCause;incrementCounter(ZUUL::EXCEPTION: errorCause : nStatusCode);}private static final void incrementCounter(String name) {CounterFactory.instance().increment(name);}}##RibbonRoutingFilter spring-cloud-netflix-core-1.2.6.RELEASE-sources.jar!/org/springframework/cloud/netflix/zuul/filters/route/RibbonRoutingFilter.java 这个类抛了很多ZuulException Overridepublic Object run() {RequestContext context RequestContext.getCurrentContext();this.helper.addIgnoredHeaders();try {RibbonCommandContext commandContext buildCommandContext(context);ClientHttpResponse response forward(commandContext);setResponse(response);return response;}catch (ZuulException ex) {context.set(ERROR_STATUS_CODE, ex.nStatusCode);context.set(error.message, ex.errorCause);context.set(error.exception, ex);}catch (Exception ex) {context.set(error.status_code,HttpServletResponse.SC_INTERNAL_SERVER_ERROR);context.set(error.exception, ex);}return null;}###forward protected ClientHttpResponse forward(RibbonCommandContext context) throws Exception {MapString, Object info this.helper.debug(context.getMethod(),context.getUri(), context.getHeaders(), context.getParams(),context.getRequestEntity());RibbonCommand command this.ribbonCommandFactory.create(context);try {ClientHttpResponse response command.execute();this.helper.appendDebug(info, response.getStatusCode().value(),response.getHeaders());return response;}catch (HystrixRuntimeException ex) {return handleException(info, ex);}}这里有一个HystrixRuntimeException主要是跟hystrix相关的比如超时等。 ###handleException protected ClientHttpResponse handleException(MapString, Object info,HystrixRuntimeException ex) throws ZuulException {int statusCode HttpStatus.INTERNAL_SERVER_ERROR.value();Throwable cause ex;String message ex.getFailureType().toString();ClientException clientException findClientException(ex);if (clientException null) {clientException findClientException(ex.getFallbackException());}if (clientException ! null) {if (clientException.getErrorType() ClientException.ErrorType.SERVER_THROTTLED) {statusCode HttpStatus.SERVICE_UNAVAILABLE.value();}cause clientException;message clientException.getErrorType().toString();}info.put(status, String.valueOf(statusCode));throw new ZuulException(cause, Forwarding error, statusCode, message);}###findClientException protected ClientException findClientException(Throwable t) {if (t null) {return null;}if (t instanceof ClientException) {return (ClientException) t;}return findClientException(t.getCause());}com.netflix.client.ClientException public class ClientException extends Exception{/*** */private static final long serialVersionUID -7697654244064441234L;/*** define your error codes here* */public enum ErrorType{GENERAL, CONFIGURATION, NUMBEROF_RETRIES_EXEEDED, NUMBEROF_RETRIES_NEXTSERVER_EXCEEDED, SOCKET_TIMEOUT_EXCEPTION, READ_TIMEOUT_EXCEPTION,UNKNOWN_HOST_EXCEPTION,CONNECT_EXCEPTION,CLIENT_THROTTLED,SERVER_THROTTLED,NO_ROUTE_TO_HOST_EXCEPTION,CACHE_MISSING;static String getName(int errorCode){if (ErrorType.values().length errorCode){return ErrorType.values()[errorCode].name();}else{return UNKNOWN ERROR CODE;}}}
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