Я пытаюсь работать с сервлетом в GWT.и я обнаружил ошибку.
No file found for: /uploadfile/uploadFileServlet
Я хочу просмотреть файл и отправить его на стороне сервера.
Я прошел через множество решений, предоставленных экспертами.Но я не могу найти свою ошибку
Кто-нибудь, пожалуйста, помогите решить ее.
Клиентская сторона
package uploadfile.client;
public class Uploadfile implements EntryPoint {
@SuppressWarnings("deprecation")
public void onModuleLoad() {
// TODO Auto-generated method stub
final FormPanel uploadForm = new FormPanel();
uploadForm.setAction(GWT.getModuleBaseURL() +"uploadFileServlet");
uploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);
uploadForm.setMethod(FormPanel.METHOD_POST);
// Create a panel to hold all of the form widgets.
VerticalPanel panel = new VerticalPanel();
uploadForm.setWidget(panel);
// Create a FileUpload widget.
FileUpload upload = new FileUpload();
upload.setName("uploadFormElement");
panel.add(upload);
// Add a 'submit' button.
Button uploadSubmitButton = new Button("Submit");
panel.add(uploadSubmitButton);
uploadSubmitButton.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
uploadForm.submit();
}
});
uploadForm.addFormHandler(new FormHandler() {
public void onSubmit(FormSubmitEvent event) {
}
public void onSubmitComplete(FormSubmitCompleteEvent event) {
Window.alert(event.getResults());
}
});
RootPanel.get().add(uploadForm);
}
}
Серверная сторона
package uploadfile.server;
public class UploadFileServlet extends HttpServlet implements Servlet
{
private static final long serialVersionUID = 8305367618713715640L;
protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/plain");
FileItem uploadItem = getFileItem(request);
if (uploadItem == null) {
response.getWriter().write("NO-SCRIPT-DATA");
return;
}
byte[] fileContents = uploadItem.get();
//TODO: add code to process file contents here. We will just print
System.out.println(new String(fileContents));
response.getWriter().write(new String(fileContents));
}
private FileItem getFileItem(HttpServletRequest request) {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
List items = upload.parseRequest(request);
Iterator it = items.iterator();
while (it.hasNext()) {
FileItem item = (FileItem) it.next();
if (!item.isFormField()
&& "uploadFormElement".equals(item.getFieldName())) {
return item;
}
}
} catch (FileUploadException e) {
return null;
}
return null;
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>fileUploaderServlet</servlet-name>
<servlet-class>uploadfile.server.UploadFileServlet</servlet-class>
</servlet>
<!-- Servlets
Default page to serve -->
<servlet-mapping>
<servlet-name>fileUploaderServlet</servlet-name>
<url-pattern>/uploadFileServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>Uploadfile.html</welcome-file>
</welcome-file-list>
</web-app>