全局异常捕获

@Component
public class ExceptionHandler implements HandlerExceptionResolver {
    private Logger logger = LoggerFactory.getLogger(ExceptionHandler.class);

    @Override
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        if (handler instanceof HandlerMethod) {
            ResponseBody responseBody = ((HandlerMethod) handler).getMethod().getAnnotation(ResponseBody.class);
            if (responseBody != null) {
                handlerResponseBody(response, ex);
            } else {
                ModelAndView mav = new ModelAndView("/WEB-INF/content/exception/error.jsp");
                mav.addObject("exception", ex);
                return mav;
            }
        }
        return null;
    }

    private void handlerResponseBody(HttpServletResponse response, Exception ex) {
        logger.error(String.format("EXCEPTION_HANDLE PARAM=%s", parseRequest(WebContext.getRequest())), ex);
        PrintWriter printWriter = null;
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/plain;charset=UTF-8");
        try {
            printWriter = response.getWriter();
            printWriter.write(StringUtils.defaultIfEmpty(ex.getMessage(), "系统出错"));
        } catch (IOException e) {
            logger.error("EXCEPTION_HANDLE_FAILED", e);
        } finally {
            IOUtils.closeQuietly(printWriter);
        }
    }

    /**
     * 将request中参数封装成Map
     *
     * @param request
     * @return
     */
    protected Map<String, String> parseRequest(HttpServletRequest request) {
        Map<String, String> params = new HashMap<>();
        Map requestParams = request.getParameterMap();
        for (Iterator iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
            }
            params.put(name, valueStr);
        }
        return params;
    }
}