Re: File Upload Problem with GWT And Java HttpServlet
Hello Isaac. About my last update: I figured out what i was doing wrong with the apache/tomcat server. Simply i gave the lol.war name instead of provaupload2.war. Now it works like the hosted/compiled mode. Now i get the http 500 error but withouth the RequestURI=/provaupload2/ MyFormHandler, which i always get in hosted/compiled mode. Also, what i do not understand is that in the hosted/compiled mode i have a path (in the browser url bar) like this: localhost:port/ provaupload2.html, instead of localhost:port/provaupload2/, which i have when i deploy the .war file in my apache/tomcat native server. How am i supposed to change this? About your questions: 1 - i suppose that url-pattern refers to the web.xml url-pattern, so this is it: url-pattern/provaupload2/MyFormHandler/url-pattern 2 - i think i have answered to this question in the first lines. Another time: what i can't do is to run the application in hosted/ compiled out of the localhost:port/provaupload2.html path. Last: i'm pretty sure that the 500 error i get is caused by permission/ folder problems. I'm trying to figure out how to fix this. I hope i gave you the information you need, sorry but i'm not really skilled with servlets and apache! Thank you again - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Update: there was a big error in the HttpServlet code: the main method was service instead of doPost. I fixed it and now the hosted/compiled mode works fine! I can see the bytes uploaded through the response.write.blablabla. What is not working is the deployed file on my native apache/tomcat server, there's always an access denied permission exception. So now i'm looking for a solution to permission problems in apache. I think i've read it somewhere here on google groups. - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Also, what i do not understand is that in the hosted/compiled mode i have a path (in the browser url bar) like this: localhost:port/ provaupload2.html, instead of localhost:port/provaupload2/, which i have when i deploy the .war file in my apache/tomcat native server. How am i supposed to change this? As you've already seen, that's your application context. If you want the root context (localhost:port/provaupload2.html) then you would deploy your application to webapps/ROOT. On Fri, Apr 10, 2009 at 4:08 AM, Nickelnext nickeln...@gmail.com wrote: Hello Isaac. About my last update: I figured out what i was doing wrong with the apache/tomcat server. Simply i gave the lol.war name instead of provaupload2.war. Now it works like the hosted/compiled mode. Now i get the http 500 error but withouth the RequestURI=/provaupload2/ MyFormHandler, which i always get in hosted/compiled mode. Also, what i do not understand is that in the hosted/compiled mode i have a path (in the browser url bar) like this: localhost:port/ provaupload2.html, instead of localhost:port/provaupload2/, which i have when i deploy the .war file in my apache/tomcat native server. How am i supposed to change this? About your questions: 1 - i suppose that url-pattern refers to the web.xml url-pattern, so this is it: url-pattern/provaupload2/MyFormHandler/url-pattern 2 - i think i have answered to this question in the first lines. Another time: what i can't do is to run the application in hosted/ compiled out of the localhost:port/provaupload2.html path. Last: i'm pretty sure that the 500 error i get is caused by permission/ folder problems. I'm trying to figure out how to fix this. I hope i gave you the information you need, sorry but i'm not really skilled with servlets and apache! Thank you again - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Hello Isaac, hello everyone First of all, I'd like to thank you for your help, i really appreciate it. So, if u let me, i'll resume a bit my situation so it will be more clear for everyone. I changed the web.xml pointing to the FormHandler which is in the .server package. I also changed the module.gwt.xml to match the servlet (i read it in the com.google.gwt.eclipse.sdkbundle.linux_1.6.4.v200904062254/gwt- linux-1.6.4/doc/helpInfo/servletMappings.html). So now my servlet should be created (and compiled) with a .class file (i see it in the war/WEB-INF/classes/com/my/site/myprojects/ provaupload2/ProvaUpload2/server/ folder). What i cannot do is to configure the setAction properly (i tried with /MyFormHandler, with the whole path WEB-INF/CLASSES/.../server/ MyFormHandler, with and without using the GWT.getModuleBaseUrl() and the others two .get methods provided by GWT. But it's always the same 404 not found. Should i run with -noserver instead of running with eclipse and the pressing the compile/browse button? Do i miss something? Surely something stupid... Thank you again for your help. - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Thank you for your help Isaac, i really appreciate it. So, if u let me, i'll resume a bit my situation so it will be more clear for everyone. I changed the web.xml pointing to the FormHandler which is in the .server package. I also changed the module.gwt.xml to match the servlet (i read it in the com.google.gwt.eclipse.sdkbundle.linux_1.6.4.v200904062254/gwt- linux-1.6.4/doc/helpInfo/servletMappings.html). So now my servlet should be created (and compiled) with a .class file (i see it in the war/WEB-INF/classes/com/my/site/myprojects/ provaupload2/ProvaUpload2/server/ folder). What i cannot do is to configure the setAction properly (i tried with /MyFormHandler, with the whole path WEB-INF/CLASSES/.../server/ MyFormHandler, with and without using the GWT.getModuleBaseUrl() and the others two .get methods provided by GWT. But it's always the same 404 not found. Should i run with -noserver instead of running with eclipse and the pressing the compile/browse button? Do i miss something? Surely something stupid... Thank you again for your help. - Nickelnext On 8 Apr, 15:45, Isaac Truett itru...@gmail.com wrote: If you're running in web mode or hosted mode with -noserver, you would deploy class files to WEB-INF/classes. com.example.Foo would be WEB-INF/classes/com/example/Foo.class, for example. 2009/4/8Nickelnextnickeln...@gmail.com: Hello everyone! sorry for the multiple posting, but this morning i updated everything to the 1.6, downloaded the eclipse plugin and so on. Now i'm getting another error: The code is the same as yesterday. What i get now is a message in the window.alert like this: HTTP ERROR: 404 NOT_FOUND RequestURI=/ provaupload2 MyFormHandler Powered by Jetty:// I really don't understand how and where gwt look for classes or paths. I configured the web.xml with the servlet like the old one. Where should i put the Servlet? And shall i compile it by myself or is gwt doing already? Sorry for this dumb questions but i really don't find an explanation anywhere. Thank you -Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Thank you Isaac, thank you everyone First of all, i'd like to thank you for your help, i really appreciate that. So, if u let me, i'll resume a bit my situation so it will be more clear for everyone. I changed the web.xml pointing to the FormHandler which is in the .server package. I also changed the module.gwt.xml to match the servlet (i read it in the com.google.gwt.eclipse.sdkbundle.linux_1.6.4.v200904062254/gwt- linux-1.6.4/doc/helpInfo/servletMappings.html). So now my servlet should be created (and compiled) with a .class file (i see it in the war/WEB-INF/classes/com/my/site/myprojects/ provaupload2/ProvaUpload2/server/ folder). What i cannot do is to configure the setAction properly (i tried with /MyFormHandler, with the whole path WEB-INF/CLASSES/.../server/ MyFormHandler, with and without using the GWT.getModuleBaseUrl() and the others two .get methods provided by GWT. But it's always the same 404 not found. Should i run with -noserver instead of running with eclipse and the pressing the compile/browse button? Do i miss something? Surely something stupid... Thank you again for your help. - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Hi Nickelnext, What i cannot do is to configure the setAction properly (i tried with /MyFormHandler, with the whole path WEB-INF/CLASSES/.../server/ MyFormHandler, with and without using the GWT.getModuleBaseUrl() and the others two .get methods provided by GWT. But it's always the same 404 not found. So what you're looking for here is a URL relative to your HTML page that matches your servlet mapping in web.xml. Let's say you have this URL pattern in web.xml: url-pattern/myFormHandler/url-pattern and your application is deployed here: http://localhost:8080/myApp/index.html Then the URL for your servlet would be: http://localhost:8080/myApp/myFormHandler So you would call setAction() like so: form.setAction(GWT.getModuleBaseURL() + myFormHandler); Where GWT.getModuleBaseURL() returns the path to your HTML, without the file name: http://localhost:8080/myApp/ See how that all comes together? From your description, it sounds like you may already have tried this setup. But I suspect you might be changing your web.xml directly in the tomcat/webapps/myApp directory instead of going through a build/deploy cycle. If that's so, then Tomcat may not be recognizing your changes and reconfiguring your application before your next test. So, you'll want to either adopt a build process (Ant's my tool of choice) or be sure to restart the webapp through the Tomcat manager (or you could restart Tomcat if that's easier). Can you setup your web.xml and form action similar to the above, make sure your changes get deployed, and then let me know if that's working? - Isaac On Thu, Apr 9, 2009 at 8:34 AM, Nickelnext nickeln...@gmail.com wrote: Hello Isaac, hello everyone First of all, I'd like to thank you for your help, i really appreciate it. So, if u let me, i'll resume a bit my situation so it will be more clear for everyone. I changed the web.xml pointing to the FormHandler which is in the .server package. I also changed the module.gwt.xml to match the servlet (i read it in the com.google.gwt.eclipse.sdkbundle.linux_1.6.4.v200904062254/gwt- linux-1.6.4/doc/helpInfo/servletMappings.html). So now my servlet should be created (and compiled) with a .class file (i see it in the war/WEB-INF/classes/com/my/site/myprojects/ provaupload2/ProvaUpload2/server/ folder). What i cannot do is to configure the setAction properly (i tried with /MyFormHandler, with the whole path WEB-INF/CLASSES/.../server/ MyFormHandler, with and without using the GWT.getModuleBaseUrl() and the others two .get methods provided by GWT. But it's always the same 404 not found. Should i run with -noserver instead of running with eclipse and the pressing the compile/browse button? Do i miss something? Surely something stupid... Thank you again for your help. - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
First: sorry for the multiple posting: there were some problems on this topic. Second: i followed some of yours advices. I made these changes - in web.xml (war/subfolder) in the url pattern i put something like this: /provaupload2/MyFormHandler - in module.gwt.xml (in src/ subfolder) i put this servlet path=/ MyFormHandler class=com.my.site.myprojects.provaupload2.ProvaUpload2.server.MyFormHandler/ - in ProvaUpload2.java (src/..client subfolder) in the setAction method i did this: form.setAction(GWT.getModuleBaseURL() + MyFormHandler); Now it seems that the servlet is been called. I Have a HTTP ERROR: 500 access denied (java.io.FilePermission /tmp/ upload__68c5f414_1208bd2536b__8000_.tmp write) but i guess it's an error caused by some hosted/compiled mode restriction. Now i'll try to pack everything up in a .war file and deploy it on my webserver and see what happens. I'll give you an update when i'll have done it. If you already know what is the error i have, please let me know. I hope there will be only a few of other thing to fix to make the whole program running! Thank you again for your time and your help!! - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Update: i did a jar -cvf lol.war * in the /war/ folder, i did deploy it to the tomcat server but when i press the submit button - HTTP Status 404 - /provaupload2/MyFormHandler - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Couple of questions: 1. What is the URL pattern of your servlet mapping? 2. What is your application context path? On Thu, Apr 9, 2009 at 1:56 PM, Nickelnext nickeln...@gmail.com wrote: Update: i did a jar -cvf lol.war * in the /war/ folder, i did deploy it to the tomcat server but when i press the submit button - HTTP Status 404 - /provaupload2/MyFormHandler - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Hello everyone! sorry for the multiple posting, but this morning i updated everything to the 1.6, downloaded the eclipse plugin and so on. Now i'm getting another error: The code is the same as yesterday. What i get now is a message in the window.alert like this: HTTP ERROR: 404 NOT_FOUND RequestURI=/ provaupload2 MyFormHandler Powered by Jetty:// I really don't understand how and where gwt look for classes or paths. I configured the web.xml with the servlet like the old one. Where should i put the Servlet? And shall i compile it by myself or is gwt doing already? Sorry for this dumb questions but i really don't find an explanation anywhere. Thank you - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
If you're running in web mode or hosted mode with -noserver, you would deploy class files to WEB-INF/classes. com.example.Foo would be WEB-INF/classes/com/example/Foo.class, for example. 2009/4/8 Nickelnext nickeln...@gmail.com: Hello everyone! sorry for the multiple posting, but this morning i updated everything to the 1.6, downloaded the eclipse plugin and so on. Now i'm getting another error: The code is the same as yesterday. What i get now is a message in the window.alert like this: HTTP ERROR: 404 NOT_FOUND RequestURI=/ provaupload2 MyFormHandler Powered by Jetty:// I really don't understand how and where gwt look for classes or paths. I configured the web.xml with the servlet like the old one. Where should i put the Servlet? And shall i compile it by myself or is gwt doing already? Sorry for this dumb questions but i really don't find an explanation anywhere. Thank you - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Hello Isaac thank you very much for your quick reply! That wasn't for sure the / 'cause i tried with and without it but it never changed. What i was surely doing wrong was the fact that i did not compile the servlet. I stupidly thought that gwt did it! Now i'm downloading j2ee from sun.com (yeah, i never used servlets before, did you notice that?) and i'll try soon to compile and get the results. I'll post soon an update. Thank you again, for now - Nickelnext --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: File Upload Problem with GWT And Java HttpServlet
Welcome!
I think your problem could be as simple as the / at the start of
your class name:
servlet path=/myFormHandler class=/
xxx.xxx.xxx.myprojects.provaupload.server.MyFormHandler/
Try changing it to this:
servlet path=/myFormHandler
class=xxx.xxx.xxx.myprojects.provaupload.server.MyFormHandler/
Now, if that isn't the problem (maybe the / was a typo in your post,
but not in your gwt.xml), then I would ask you to make sure that you
are compiling your servlet (javac from the command line, or an IDE
such as Eclipse will do this automatically). The compiled servlet
class needs to be on your classpath when you run hosted mode.
Hope that helps.
- Isaac
On Tue, Apr 7, 2009 at 1:41 PM, Nickelnext nickeln...@gmail.com wrote:
Hello everyone,
this is my first post and i pray i did not do anything wrong by write
it here.
I've been looking for the solution of my problem for days over the
web, but i did not find what i need so, i'm posting right here at
google groups hoping someone more skilled than me and very patient
could help me.
Before start, i let u know how my workspace is configured:
package: com.my.site.myprojects.provaupload
public css, html,
ProvaUpload.gwt.xml
package: com.my.site.myprojects.provaupload.client
ProvaUpload.java
package: com.my.site.myprojects.provaupload.server
MyFormHandler.java
Now, here's my problem:
I need an upload form to upload a small file on the server, i have my
simple ProvaUpload.java like this
public void onModuleLoad() {
final FormPanel form = new FormPanel();
form.setAction(GWT.getModuleBaseURL() + /myFormHandler);
// Because we're going to add a FileUpload widget, we'll need
to set the
// form to use the POST method, and multipart MIME encoding.
form.setEncoding(FormPanel.ENCODING_MULTIPART);
form.setMethod(FormPanel.METHOD_POST);
VerticalPanel panel = new VerticalPanel();
form.setWidget(panel);
// Create a FileUpload widget.
FileUpload upload = new FileUpload();
upload.setName(uploadFormElement);
panel.add(upload);
Button button2 = new Button(Submit, new ClickListener() {
public void onClick(Widget sender) {
form.submit();
}
});
// Add a 'submit' button.
panel.add(button2);
// Add an event handler to the form.
form.addFormHandler(new FormHandler() {
public void onSubmitComplete(FormSubmitCompleteEvent
event) {
// When the form submission is successfully completed,
this
// event is
// fired. Assuming the service returned a response of
type
// text/html,
// we can get the result text here (see the FormPanel
// documentation for
// further explanation).
Window.alert(event.getResults());
// Window.alert(Done);
}
public void onSubmit(FormSubmitEvent event) {
// TODO Auto-generated method stub
Window.alert(upload in progress);
}
});
RootPanel.get().add(form);
}
found the code over the web.
Now my problem is here: i don't need any of the gwt (ajax) async
callback or anything: i only need a simple servlet that takes care of
my uploaded file, so my MyFormHandler.java is like this
public class MyFormHandler extends HttpServlet {
private static final long serialVersionUID = 1L;
public void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.setContentType(text/html);
FileItem uploadItem = getFileItem(req);
if(uploadItem == null) {
resp.getWriter().write(NO-SCRIPT-DATA);
return;
}
resp.getWriter().write(new String(uploadItem.get()));
}
private FileItem getFileItem(HttpServletRequest req) {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setFileSizeMax(1);
try {
List items = upload.parseRequest(req);
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;
}http://groups.google.com/group/Google-Web-Toolkit/
browse_thread/thread/50b6a7fee3262a18
return null;
}
}
also this one found on the web. That's right, i should have done it by
myself but i'm trying to figure out how the whole gwt works so...no
time for it.
Now, what i don't understand which of the two files (the web.xml one
or the ProvaUpload.gwt.xml one) i
Re: File Upload Problem with GWT And Java HttpServlet
Hello! Now...i did the compilation with javac like: javac -cp lib1.jar:lib2.jar:lib3.jar MyFormHandler.java and it went well. Now in server folder i have the .class file. But...what now? If i run in hosted mode it doesn't work either. The error is the same as usualwhat do i do wrong? I also try to compile, but the result is similar: but here's another question: do i need to create a war file and upload it to my tomcat server or is it enough to go to www directory (under the ProvaUpload dir) and open the html file from there? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
