1. 采用spring boot注解方式，如果采用swagger的话会导致swagger不可用

　　1.1  spring 配置如下

#出现错误时, 直接抛出异常spring.mvc.throw-exception-if-no-handler-found=true#不要为我们工程中的资源文件建立映射spring.resources.add-mappings=false 如果设置为ture,当访问不存在的路径或入参解析异常等，会出现框架自定义异常即1.2的配置的异常信息，swagger出现404

如果设为false,swagger正常，其它异常会出现如下页面

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Fri Jun 21 14:01:28 CST 2019

There was an unexpected error (type=Not Found, status=404).

No message available

　　1.2 增加公用异常拦截

ControllerAdvicepublic class GlobalExceptionHandler {@ExceptionHandler(value = Exception.class)    @ResponseBody    public String defaultErrorHandler(HttpServletRequest req, Exception e) throws Exception {return "xxx";}}

 

2. 如果要处理错误路径问题且要swagger可用，可以参考org.springframework.boot.autoconfigure.web.BasicErrorController重写自己的

@Controller@RequestMapping("${server.error.path:${error.path:/error}}")public class FundaErrorController  implements ErrorController {    private static final String PATH = "/error";     @Autowired    private ErrorAttributes errorAttributes;     @Override    public String getErrorPath() {        return PATH;    }      @RequestMapping    @ResponseBody    public String doHandleError(HttpServletRequest request) {           return "xxxx"';      }  }