jetty-distribution-9.4.21.v20190926
jre1.8.0_231
Create a HTML form using the POST method :-
<form name="frm" method=post action="" accept-charset="utf-8">
First name: <input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
<input type="submit" value="Submit">
</form>
Submit the form.
Jetty throws the following exception :-
HTTP ERROR 500 java.lang.IllegalArgumentException: Null charset name
URI: |
/your_company/cgi-bin/form.pl |
STATUS: |
500 |
MESSAGE: |
java.lang.IllegalArgumentException: Null charset name |
SERVLET: |
CGI |
CAUSED BY: |
java.lang.IllegalArgumentException: Null charset name |
java.lang.IllegalArgumentException: Null charset name
at java.nio.charset.Charset.lookup(Charset.java:457)
at java.nio.charset.Charset.forName(Charset.java:528)
at org.eclipse.jetty.servlets.CGI.exec(CGI.java:254)
at org.eclipse.jetty.servlets.CGI.service(CGI.java:217)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:760)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1617)
at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:226)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:536)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1589)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1296)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1559)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1211)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:500)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:386)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:560)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:378)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:268)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:367)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:782)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:914)
at java.lang.Thread.run(Thread.java:748)
Relevant lines of code from /jetty/servlets/CGI.java were it determines that the POST method was used and
calls getCharacterEncoding on the request that results in the above exception :-
String bodyFormEncoded = null;
|
|
if ((HttpMethod.POST.is(req.getMethod())
|| HttpMethod.PUT.is(req.getMethod()))
&& "application/x-www-form-urlencoded".equals(req.getContentType())) |
|
{ |
|
MultiMap<String> parameterMap
= new MultiMap<>(); |
|
Enumeration<String> names
= req.getParameterNames(); |
|
while (names.hasMoreElements()) |
|
{ |
|
String parameterName
= names.nextElement(); |
|
parameterMap.addValues(parameterName,
req.getParameterValues(parameterName)); |
|
} |
|
bodyFormEncoded
= UrlEncoded.encode(parameterMap,
Charset.forName(req.getCharacterEncoding()),
true); |
|
} |
A call
to CGI-exec with a POST request use to work without throwing an exception at least at
jetty-distribution-9.4.14.v20181114.
Experimented
but can't find a fix and appreciate any insight or possible workaround to appease jetty.servlets.CGI.exec()
|