Spring ExceptionHandler和Rest响应的异常

Question

我正在使用@ExceptionHandler来管理我的所有异常，并为任何抛出异常的REST API返回一个JSON响应。目前我管理两个异常，第一个是ResourceNotFoundException，它可以工作，但第二个是FileExtensionException，它不工作。它在eclipse控制台中抛出这个异常，而在rest响应中抛出任何东西。

2015-09-21 09:09:05.197错误7500---[nio-8080-exec-2].M.M.A.ExceptionHandlerExceptionResolver：无法调用@ExceptionHandler方法：public Matlab.ErrorResponse Matlab.ErrorController.ErrorHandler（java.lang.Exception）

2015-09-21 09:09:05.201错误7500---[nio-8080-exec-2]O.S.Boot.Context.Web.ErrorPageFilter：由于异常[所选文件具有不同的扩展名：XLSX而不是zip],正在从请求[/ManagementFile/ZipDownload]转发到错误页

以下是WebServices调用的代码：

public FileSystemResource getZipFile(String fileName) throws FileExtensionException {
    String ext=FilenameUtils.getExtension(fileName);
    if (ext!= "zip")
        throw new FileExtensionException(ext + " and not zip");
    return new FileSystemResource(new File(fileName));
}

例外情况：

package matlab;

public class FileExtensionException extends RuntimeException {

    private static final long serialVersionUID = 1L;

    public FileExtensionException(String message){
        super("The selected file has a different extension:" + message);
    }
}

RESTController：

@RequestMapping(value = "/files", method = RequestMethod.GET)
public Response<Collection<FileModel>> getAllFiles(@RequestParam(value="path", defaultValue="/home") String path) throws ResourceNotFoundException {
    Collection<FileModel> result;
    result = file.getAllFiles(path);
    return new Response<Collection<FileModel>>(HttpStatus.OK.value(),result);
}

@RequestMapping(value = "/zipDownload", produces="application/zip", method = RequestMethod.GET)
@ResponseBody
public FileSystemResource getZip(@RequestParam(value="filePath", required=true) String filePath ) throws FileExtensionException{
    return file.getZipFile(filePath);
}

ResourceNotFoundException

public class ResourceNotFoundException extends Exception {
    private static final long serialVersionUID = 1L;

    public ResourceNotFoundException(String path){
        super("The specified path: "+ path +"  doesn't exist");
    }
}

@ControllerAdvice 
public class ErrorController {

    /**
     * 
     * @param e: exception thrown
     * @return ErroreResponse
     */
    @ExceptionHandler(Exception.class)
    public @ResponseBody ErrorResponse errorHandler(Exception e){   
        //Make the exception by buildErrorResponse
        return ErrorResponseBuilder.buildErrorResponse(e);
    }

}

public class ErrorResponseBuilder {

    public ErrorResponseBuilder() { 
    }

    /**
     * Build exception response beginning from exception
     * @param e exception thrown
     * @return ErrorResponse: response of an exception
     */
    public static ErrorResponse buildErrorResponse(Exception e){
        StringWriter errors = new StringWriter();
        e.printStackTrace(new PrintWriter(errors));
        return new ErrorResponse(HttpStatusManager.getHttpCode(e),e.getClass().getName(),e.getMessage(),errors.toString());
    }

}

问题出在哪里？谢谢

Answer 1

尝试用以下方法更新spring配置：

<bean id="methodHandlerExceptionResolver" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver">
        <property name="messageConverters">
            <list>
                <ref bean="stringHttpMessageConverter"/>
                <ref bean="jsonHttpMessageConverter"/>
                <ref bean="marshallingHttpMessageConverter"/>
            </list>
        </property>
    </bean>