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Unable to compile class for JSP [message #641528]

Thu, 25 November 2010 20:12

No real name

Messages: 3
Registered: November 2010

Junior Member

I'm getting this extremely frustrating error. I've tried all the solutions I could find on the web: including adding JDK to my project build path and adding tools.jar to my lib.

I'm running the google app engine eclipse plugin btw.

It's still not working....can someone please advise me on how to fix this issue?

Here's the error:

HTTP ERROR 500

Problem accessing /gps.jsp. Reason:

Unable to compile class for JSP

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: 'catch' without 'try'
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: ')' expected
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: not a statement
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: ';' expected
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:131: 'finally' without 'try'
[javac] } finally {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:37: 'try' without 'catch' or 'finally'
[javac] try {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:135: reached end of file while parsing
[javac] }
[javac] ^
[javac] 7 errors

Caused by:

org.apache.jasper.JasperException: Unable to compile class for JSP

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: 'catch' without 'try'
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: ')' expected
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: not a statement
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:124: ';' expected
[javac] } catch (Throwable t) {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:131: 'finally' without 'try'
[javac] } finally {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:37: 'try' without 'catch' or 'finally'
[javac] try {
[javac] ^

Generated servlet error:
[javac] C:\Users\jhwang\AppData\Local\Temp\Jetty_127_0_0_1_8888_war_ ___.g0qk00\jsp\org\apache\jsp\gps_jsp.java:135: reached end of file while parsing
[javac] }
[javac] ^
[javac] 7 errors

at org.apache.jasper.compiler.DefaultErrorHandler.javacError(De faultErrorHandler.java:84)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorD ispatcher.java:332)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.j ava:412)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:47 2)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:45 1)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:43 9)
at org.apache.jasper.JspCompilationContext.compile(JspCompilati onContext.java:511)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServl etWrapper.java:295)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServl et.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java :236)
at com.google.appengine.tools.development.PrivilegedJspServlet. access$101(PrivilegedJspServlet.java:23)
at com.google.appengine.tools.development.PrivilegedJspServlet$ 2.run(PrivilegedJspServlet.java:59)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.appengine.tools.development.PrivilegedJspServlet. service(PrivilegedJspServlet.java:57)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder .java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilte r(ServletHandler.java:1166)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFil ter(ServeBlobFilter.java:58)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilte r(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter .doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilte r(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFi lter(StaticFileFilter.java:122)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilte r(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandl er.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHa ndler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandl er.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandl er.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext. java:418)
at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext. handle(DevAppEngineWebAppContext.java:70)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapp er.java:152)
at com.google.appengine.tools.development.JettyContainerService $ApiProxyHandler.handle(JettyContainerService.java:349)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapp er.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnectio n.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComple te(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java: 212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java: 404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEn dPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThr eadPool.java:582)

[Updated on: Thu, 25 November 2010 20:13]

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Re: Unable to compile class for JSP [message #641643 is a reply to message #641528]

Fri, 26 November 2010 12:45

saurav sarkar

Messages: 428
Registered: July 2009

Senior Member

Seems that your JSP is having compilation problems.
Check your try catch syntaxes in the JSP.

cheers,
Saurav

My Blog http://codifyit.blogspot.com/
Follow me: http://twitter.com/sauravs

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Re: Unable to compile class for JSP [message #641771 is a reply to message #641528]

Sat, 27 November 2010 19:26

No real name

Messages: 3
Registered: November 2010

Junior Member

Thanks for getting back to me. But the only problem is my JSP class doesn't have any try/catches. This is what my JSP class looks like:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="java.util.List" %>
<%@ page import="javax.jdo.PersistenceManager" %>
<%@ page import="com.google.appengine.api.users.User" %>
<%@ page import="com.google.appengine.api.users.UserService" %>
<%@ page import="com.google.appengine.api.users.UserServiceFactory" %>
<%@ page import="gps.GPS" %>
<%@ page import="gps.PMF" %>

<html>
<body>

<%
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();
if (user != null) {
%>
<p>Hello, <%= user.getNickname() %>! (You can
<a href="<%= userService.createLogoutURL(request.getRequestURI()) %>">sign out</a>.)</p>
<%
} else {
%>
<p>Hello!
<a href="<%= userService.createLoginURL(request.getRequestURI()) %>">Sign in</a>
to include your name with greetings you post.</p>

<%
PersistenceManager pm = PMF.get().getPersistenceManager();
String query = "select from " + GPS.class.getName();
List<GPS> locations = (List<GPS>) pm.newQuery(query).execute();
if (locations.isEmpty()) {
%>
<p>The guestbook has no messages.</p>
<%
} else {
for (GPS loc : locations) {
if (loc.getUser == null) {
%>
<p>An anonymous person wrote:</p>
<%
} else {
%>
<p><b><%= loc.getUser() %></b> wrote:</p>
<%
}
%>
<%
}
}
pm.close();
%>

<form action="/sign" method="post">
<div><textarea name="content" rows="3" cols="60"></textarea></div>
<div><input type="submit" value="Post Location" /></div>
</form>

</body>
</html>

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Re: Unable to compile class for JSP [message #642648 is a reply to message #641528]

Thu, 02 December 2010 07:40

saurav sarkar

Messages: 428
Registered: July 2009

Senior Member

I am not sure about your code.But definetely someone is expecting a try catch block.I think the java method calls which you are making is throwing an exception and then you need to catch it.

If possible just try the same code in your java editor, you will get the error.

cheers,
Saurav

My Blog http://codifyit.blogspot.com/
Follow me: http://twitter.com/sauravs

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Re: Unable to compile class for JSP [message #643696 is a reply to message #641771]

Tue, 07 December 2010 21:55

Nitin Dahyabhai

Messages: 4492
Registered: July 2009

Senior Member

On 11/27/2010 2:26 PM, jhwang@go.wustl.edu wrote:

You seem to be missing the close brace matching the one that opens at
the end of this line:
> } else {

I'm not sure why the JSP Validator is not reporting something to you.

--
Nitin Dahyabhai
Eclipse WTP Source Editing and JSDT
IBM Rational

_
Nitin Dahyabhai
Eclipse Web Tools Platform

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