1
는 onModuleLoad() 코드 :다중 사용하는 동안 형식 필드의 데이터를 추출 할 수 없습니다 - 자바, GWT를
VerticalPanel vPanel = new VerticalPanel();
final FormPanel form= new FormPanel();
form.setAction("/bq_stream/upload");
form.setEncoding(FormPanel.ENCODING_MULTIPART);
form.setMethod(FormPanel.METHOD_POST);
final TextBox txt_name = new TextBox();
txt_pid.setName("Name");
Button uploadButton = new Button("Upload");
uploadButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
form.submit();
}
});
form.setWidget(vPanel);
HTTP를 서블릿 코드 :
@Override
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException{
String name= null;
boolean isMultiPart= true;
if(isMultiPart){
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
@SuppressWarnings("unchecked")
List<FileItem> items = upload.parseRequest(req);
Iterator<FileItem> iterator = items.iterator();
while(iterator.hasNext()){
FileItem item = (FileItem) iterator.next();
if(item.isFormField()){
String fieldname= item.getFieldName();
String fieldvalue = item.getString();
if((fieldname!=null) && (fieldvalue!=null)){
if(fieldname.equals("name")){
projectID= fieldvalue.toString();
System.out.println(name);
}
}
}
}
} catch (FileUploadException e) {
e.printStackTrace();
}
}
추출 할 수 없습니다 및 인쇄 Eclipse (Kepler)에서 웹 응용 프로그램으로 프로젝트를 실행할 때 텍스트 상자 데이터 및 콘솔에서 다음 오류가 발생합니다.
Nov 12, 2014 7:00:07 AM com.google.appengine.tools.development.DevAppServerModulesFilter doDirectRequest
FINEST: request to specific module instance: -1.default
Nov 12, 2014 7:00:07 AM com.google.appengine.tools.development.DevAppServerModulesFilter doDirectRequest
FINEST: Acquired serving permit for: -1.default
Nov 12, 2014 7:00:07 AM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: Error for /bq_stream/upload
java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileUploadException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:428)
at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileUploadException
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:216)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 43 more
Nov 12, 2014 7:00:07 AM com.google.apphosting.utils.jetty.AppEngineAuthentication$AppEngineAuthenticator authenticate
FINE: Got /bq_stream/upload with null response, returning null.
미리 감사드립니다.