dubbo异常捕捉，利用spring全局捕捉并返回调用处

你的名字 2022-04-17 00:27 510阅读 0赞

在业务处理逻辑中抛出自定义异常

public Object MethodSelf\{   
    ......  
    throw new SelfException(JSONObject.fromObject("\{"key1":"value1"\}", StringUtil.jsonConfig).toString());  
\}

public class SelfException extends RuntimeException {
        /** serialVersionUID :  */
        private static final long serialVersionUID = -4172267101901373754L;
        private String message;
    
        @Override
        public String getMessage() {
            return message;
        }
    
        public void setMessage(String message) {
            this.message = message;
        }
    
        public SelfException(String message) {
            super();
            this.message = message;
        }
    }

spring.xml

public class CustomExceptionResolver implements HandlerExceptionResolver {
        private static Logger logger = LoggerFactory.getLogger(CustomExceptionResolver.class);
        //wise自定义错误 throw 后需要截取exception.message中有效的json信息
        private static final int SUBSTRLENG="com.*.SelfException : ".length();
        @Override
        public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) {
            ModelAndView modelAndView = new ModelAndView();
            response.setStatus(HttpStatus.OK.value()); //设置状态码
            response.setContentType(MediaType.APPLICATION_JSON_VALUE); //设置ContentType
            response.setCharacterEncoding("UTF-8"); //避免乱码
            response.setHeader("Cache-Control", "no-cache, must-revalidate");
            try {
                if (exception instanceof SelfException) {
                    SelfException selfException= (SelfException) exception;
                    response.getWriter().write(selfException.getMessage());
                    logger.error("exceptions:" ,exception);
                } else if (exception.getMessage().contains("SelfException:")) { //中台自定义错误异常
                    String exceptionMessages[] = exception.getMessage().split("\n");
                    if (exceptionMessages.length >= 2) {
                        if (exceptionMessages[0].length() >= SUBSTRLENG) {
                            String wiseExceptionMes = exceptionMessages[0].substring(SUBSTRLENG);
                            logger.info("WiseException={}", StringUtil.formatJson(JSONObject.fromObject(wiseExceptionMes).toString()));
                            response.getWriter().write(wiseExceptionMes);
                        }
                    }
                    logger.error("exceptions:", exception);
                } else {
                   
                    }
                    response.getWriter().write(JSONObject.fromObject("{"key1":"value1"}").toString());
                   
                }
    
            } catch (Exception e) {
                logger.error("全局异常处理失败", e);
            }
            return modelAndView;
        }
    }