import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
@PostConstruct
public void init() {
    exceptionToStatusCodeMap.put(FileUploadBase.FileSizeLimitExceededException.class, 413);
    exceptionToStatusCodeMap.put(FileUploadBase.SizeLimitExceededException.class, 413);
    exceptionToStatusCodeMap.put(MethodArgumentTypeMismatchException.class, 404);
    exceptionToStatusCodeMap.put(MethodArgumentNotValidException.class, 422);

    exceptionToMessageMap.put(MethodArgumentNotValidException.class, "Request validation failed");
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
@Test
public void should_find_cause_from_exception_and_return_appropriate_code() {
    final FileUploadBase.FileSizeLimitExceededException fileSizeLimitExceededException =
            new FileUploadBase.FileSizeLimitExceededException("Too Big", 1234, 1024);
    final MultipartException multipartException =
            new MultipartException("Limit exceeded", fileSizeLimitExceededException);

    final ErrorStatusCodeAndMessage statusCodeAndMessage =
            resolver.resolveStatusCodeAndMessage(multipartException, "It broke", 500);

    assertThat(statusCodeAndMessage.getStatusCode(), equalTo(413));
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
/**
 * Retrieve the content length of the request.
 *
 * @return The content length of the request.
 * @since 1.3
 */
@Override
public long contentLength() {
    long size;
    try {
        size = Long.parseLong(request.getHeader(FileUploadBase.CONTENT_LENGTH));
    } catch (NumberFormatException e) {
        size = request.getContentLength();
    }
    return size;
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
@ExceptionHandler(MultipartException.class)
public ResponseEntity<UploadImagesDTO> handleMultipartException(Exception e){
    UploadImagesDTO dto = new UploadImagesDTO("", false);

    if(e.getCause() instanceof IllegalStateException && e.getCause().getCause() instanceof FileUploadBase.SizeLimitExceededException) {
        return ResponseEntity
                .status(HttpStatus.PAYLOAD_TOO_LARGE)
                .body(dto);
    } else {
        e.printStackTrace();
        return ResponseEntity
                .status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body(dto);
    }
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
/**
 * Retrieve the content length of the request.
 *
 * @return The content length of the request.
 * @since 1.3
 */
@Override
public long contentLength() {
	long size;
	try {
		size = Long.parseLong(request.getHeader(FileUploadBase.CONTENT_LENGTH));
	} catch (NumberFormatException e) {
		size = request.getContentLength();
	}
	return size;
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
@Bean
MultipartConfigElement multipartConfigElement() {
    // spring-config
    MultipartConfigFactory factory = new MultipartConfigFactory();
    factory.setMaxFileSize(System.getProperty("yaio.server.maxfilesize", "128kb"));
    factory.setMaxRequestSize(System.getProperty("yaio.server.maxrequestsize", "128kb"));
    MultipartConfigElement config = factory.createMultipartConfig();

    // tomcat-config
    FileUploadBase tomcatConfig = new FileUpload();
    tomcatConfig.setFileSizeMax(config.getMaxFileSize());
    tomcatConfig.setSizeMax(config.getMaxFileSize());

    return config;
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
/**
 * Utility method that determines whether the request contains multipart
 * content.
 *
 * @param request The servlet request to be evaluated. Must be non-null.
 *
 * @return <code>true</code> if the request is multipart;
 *         <code>false</code> otherwise.
 */
public static final boolean isMultipartContent(
        HttpServletRequest request) {
    if (!POST_METHOD.equalsIgnoreCase(request.getMethod())) {
        return false;
    }
    return FileUploadBase.isMultipartContent(new ServletRequestContext(request));
}
 

import org.apache.tomcat.util.http.fileupload.FileUploadBase; //导入依赖的package包/类
/**
 * Utility method that determines whether the request contains multipart
 * content.
 *
 * @param request
 *            The servlet request to be evaluated. Must be non-null.
 *
 * @return <code>true</code> if the request is multipart; <code>false</code>
 *         otherwise.
 */
public static final boolean isMultipartContent(HttpServletRequest request) {
	if (!POST_METHOD.equalsIgnoreCase(request.getMethod())) {
		return false;
	}
	return FileUploadBase.isMultipartContent(new ServletRequestContext(request));
}