详解Springboot自定义异常处理

@Bean  public EmbeddedServletContainerCustomizer containerCustomizer(){    return new EmbeddedServletContainerCustomizer(){      @Override      public void customize(ConfigurableEmbeddedServletContainer container) {        container.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/error/404"));        container.addErrorPages(new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500"));        container.addErrorPages(new ErrorPage(java.lang.Throwable.class,"/error/500"));      }    };  }

/** * 重写BasicErrorController,主要负责系统的异常页面的处理以及错误信息的显示 * @see org.springframework.boot.autoconfigure.web.BasicErrorController * @see org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration * * @author Jonathan * @version 2016/5/31 11:22 * @since JDK 7.0+ */@Controller@RequestMapping(value = "error")@EnableConfigurationProperties({ServerProperties.class})public class ExceptionController implements ErrorController {  private ErrorAttributes errorAttributes;  @Autowired  private ServerProperties serverProperties;  /**   * 初始化ExceptionController   * @param errorAttributes   */  @Autowired  public ExceptionController(ErrorAttributes errorAttributes) {    Assert.notNull(errorAttributes, "ErrorAttributes must not be null");    this.errorAttributes = errorAttributes;  }  /**   * 定义404的ModelAndView   * @param request   * @param response   * @return   */  @RequestMapping(produces = "text/html",value = "404")  public ModelAndView errorHtml404(HttpServletRequest request,                 HttpServletResponse response) {    response.setStatus(getStatus(request).value());    Map<String, Object> model = getErrorAttributes(request,        isIncludeStackTrace(request, MediaType.TEXT_HTML));    return new ModelAndView("error/404", model);  }  /**   * 定义404的JSON数据   * @param request   * @return   */  @RequestMapping(value = "404")  @ResponseBody  public ResponseEntity<Map<String, Object>> error404(HttpServletRequest request) {    Map<String, Object> body = getErrorAttributes(request,        isIncludeStackTrace(request, MediaType.TEXT_HTML));    HttpStatus status = getStatus(request);    return new ResponseEntity<Map<String, Object>>(body, status);  }  /**   * 定义500的ModelAndView   * @param request   * @param response   * @return   */  @RequestMapping(produces = "text/html",value = "500")  public ModelAndView errorHtml500(HttpServletRequest request,                 HttpServletResponse response) {    response.setStatus(getStatus(request).value());    Map<String, Object> model = getErrorAttributes(request,        isIncludeStackTrace(request, MediaType.TEXT_HTML));    return new ModelAndView("error/500", model);  }  /**   * 定义500的错误JSON信息   * @param request   * @return   */  @RequestMapping(value = "500")  @ResponseBody  public ResponseEntity<Map<String, Object>> error500(HttpServletRequest request) {    Map<String, Object> body = getErrorAttributes(request,        isIncludeStackTrace(request, MediaType.TEXT_HTML));    HttpStatus status = getStatus(request);    return new ResponseEntity<Map<String, Object>>(body, status);  }  /**   * Determine if the stacktrace attribute should be included.   * @param request the source request   * @param produces the media type produced (or {@code MediaType.ALL})   * @return if the stacktrace attribute should be included   */  protected boolean isIncludeStackTrace(HttpServletRequest request,                     MediaType produces) {    ErrorProperties.IncludeStacktrace include = this.serverProperties.getError().getIncludeStacktrace();    if (include == ErrorProperties.IncludeStacktrace.ALWAYS) {      return true;    }    if (include == ErrorProperties.IncludeStacktrace.ON_TRACE_PARAM) {      return getTraceParameter(request);    }    return false;  }  /**   * 获取错误的信息   * @param request   * @param includeStackTrace   * @return   */  private Map<String, Object> getErrorAttributes(HttpServletRequest request,                          boolean includeStackTrace) {    RequestAttributes requestAttributes = new ServletRequestAttributes(request);    return this.errorAttributes.getErrorAttributes(requestAttributes,        includeStackTrace);  }  /**   * 是否包含trace   * @param request   * @return   */  private boolean getTraceParameter(HttpServletRequest request) {    String parameter = request.getParameter("trace");    if (parameter == null) {      return false;    }    return !"false".equals(parameter.toLowerCase());  }  /**   * 获取错误编码   * @param request   * @return   */  private HttpStatus getStatus(HttpServletRequest request) {    Integer statusCode = (Integer) request        .getAttribute("javax.servlet.error.status_code");    if (statusCode == null) {      return HttpStatus.INTERNAL_SERVER_ERROR;    }    try {      return HttpStatus.valueOf(statusCode);    }    catch (Exception ex) {      return HttpStatus.INTERNAL_SERVER_ERROR;    }  }  /**   * 实现错误路径,暂时无用   * @see ExceptionMvcAutoConfiguration#containerCustomizer()   * @return   */  @Override  public String getErrorPath() {    return "";  }}