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我以前在這裏看過這個問題，但沒有一個解決方案適用於我。 我有一個使用Spring MVC的SmartGWT應用程序。這一切都很好，並且我正在使用RESTful Web服務。smartgwt spring servlet和上傳文件
我有一個表單，不僅可以上傳文件，還可以上傳一些元數據。 有一個相關的DataSource這種形式：
private final String DEFAULT_FILE_UPLOAD_SERVICE_PATH = "upload";
private final String TARGET = "uploadTarget";
public FileUploadForm()
{
setEncoding(Encoding.MULTIPART);
setMethod(FormMethod.POST);
setAutoFetchData(false);
setDataSource(fileUploadDS);
setTitleOrientation(TitleOrientation.TOP);
setNumCols(1);
setColWidths("*");
uploadFileIdItem.setRequired(true);
uploadFileIdItem.setDefaultValue(0);
uploadFileIdItem.setVisible(false);
uploadFileIdItem.setShowTitle(false);
// ==========================================================================
fileUploadTypeSelectItem.setShowTitle(false);
fileUploadTypeSelectItem.setName(Constants.FILE_UPLOAD_UPLOADTYPE);
fileUploadTypeSelectItem.setPickListWidth(TEXT_SIZE);
fileUploadTypeSelectItem.setTitle(Constants.TITLE_FILE_UPLOAD_UPLOADTYPE);
fileUploadTypeSelectItem.setOptionDataSource(fileUploadTypeDS);
fileUploadTypeSelectItem.setRequired(true);
fileUploadTypeSelectItem.setDisplayField(Constants.FILE_UPLOAD_UPLOADTYPE_NAME);
fileUploadTypeSelectItem.setValueField(Constants.FILE_UPLOAD_UPLOADTYPE_ID);
fileUploadTypeSelectItem.setDataPath("fileUploadType/fileUploadTypeId");
// ==========================================================================
setAction(GWT.getHostPageBaseURL() + "rest/" + DEFAULT_FILE_UPLOAD_SERVICE_PATH);
ButtonItem uploadButton = new ButtonItem("Upload");
uploadButton.addClickHandler(new com.smartgwt.client.widgets.form.fields.events.ClickHandler()
{
@Override
public void onClick(com.smartgwt.client.widgets.form.fields.events.ClickEvent event)
{
submitForm();
}
});
FileItem uploadItem = new FileItem(Constants.FILENAME);
uploadItem.setTitle(Constants.FILENAME);
setFields(uploadFileIdItem, fileUploadTypeSelectItem, uploadItem, uploadButton);
}
所以，我不知道我是否需要使用： 的setAction（GWT.getHostPageBaseURL（）+ 「休息/」 + DEFAULT_FILE_UPLOAD_SERVICE_PATH）; 或 setAction（GWT.getHostPageBaseURL（）+ DEFAULT_FILE_UPLOAD_SERVICE_PATH）; 或 setAction（GWT.getHostPageBaseURL（）+ DEFAULT_FILE_UPLOAD_SERVICE_PATH）;
這些似乎都不起作用，我提交我的數據上傳文件名，並不斷得到HTTP 404錯誤。
我沒有在serv.xml的web.xml文件中定義任何特別的東西。 相反，用SpringMVC-的servlet包含：
<context:component-scan base-package="com.myself.products.app.server.controller" />
並且servlet實際上是這樣定義：
@SuppressWarnings("serial")
@Controller
@RequestMapping("/upload")
public class FileUploadServlet extends HttpServlet
{
private final Logger logger = LoggerFactory.getLogger(FileUploadServlet.class);
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
this.process(request, response);
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
this.process(request, response);
}
private void process(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
// check that we have a file upload request
if (ServletFileUpload.isMultipartContent(request))
{
processFiles(request, response);
}
}
private File tmpDir;
private static final String DESTINATION_DIR_PATH = "/files/upload";
private File destinationDir;
public void init(ServletConfig config) throws ServletException
{
super.init(config);
tmpDir = new File(((File) getServletContext().getAttribute("javax.servlet.context.tempdir")).toString());
if (!tmpDir.isDirectory())
{
throw new ServletException(tmpDir.toString() + " is not a directory");
}
logger.debug("tmpDir: " + tmpDir.toString());
String realPath = getServletContext().getRealPath(DESTINATION_DIR_PATH);
destinationDir = new File(realPath);
if (!destinationDir.isDirectory())
{
throw new ServletException(DESTINATION_DIR_PATH + " is not a directory");
}
}
private void processFiles(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException
{
// create a factory for disk-based file items
DiskFileItemFactory factory = new DiskFileItemFactory();
// set the size threshold, above which content will be stored on disk
factory.setSizeThreshold(1 * 1024 * 1024); // 1 MB
// set the temporary directory (this is where files that exceed the threshold will be stored)
factory.setRepository(tmpDir);
// create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
try
{
// parse the request
List<?> items = upload.parseRequest(request);
// process the uploaded items
Iterator<?> itr = items.iterator();
while (itr.hasNext())
{
FileItem item = (FileItem) itr.next();
// write the uploaded file to the application's file staging area
File file = new File(destinationDir, item.getName());
item.write(file);
}
}
catch (FileUploadException e)
{
logger.error("Error encountered while parsing the request", e);
}
catch (Exception e)
{
logger.error("Error encountered while uploading file", e);
}
}
你已經看到了這個代碼之前沿着這條的網站，和其他幾個人。
如果可能，我想提交文件和數據，但如果不可以，那麼我如何提交表單，然後提交元數據？
任何幫助將不勝感激。
是的，我很確定這是我終於解決了我的問題。我只需要更新答案，但這基本上就是我所做的。謝謝！ – tjholmes66