I'm writing handler for file transfer. The request is multipart HTTP message. The message is correct - tested on other servers.
The problem is "java.lang.IllegalStateException: No multipart config for servlet" on getParts() call.
The test code:
@SuppressWarnings("serial")
@MultipartConfig
@WebServlet(urlPatterns={"/upload"}, name="upload")
public class FilesServlet extends HttpServlet
{
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
resp.setContentType("text/plain");
PrintWriter out = resp.getWriter();
int i=0;
for(Part part: req.getParts())
{
out.printf("Got part: name=%s, size=%d%n",part.getName(), part.getSize());
part.write(String.format("part-%02d.dat",i++));
}
}
}
The exception:
java.lang.IllegalStateException: No multipart config for servlet
at org.eclipse.jetty.server.Request.getParts(Request.java:2327)
at org.eclipse.jetty.server.Request.getParts(Request.java:2314)
at com.rad.server.servlet.FilesServlet.doPost(FilesServlet.java:31)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:860)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:535)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:530)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:347)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:256)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
at java.lang.Thread.run(Thread.java:745)
The jars are: jetty-server-9.4.8 and javax-servlet-api-3.10.
What is wrong here?
Actually, I didn't found why @MultipartConfig annotation doesn't work for me, but I found on i-net kind of workaround that works fine:
private static final MultipartConfigElement MULTI_PART_CONFIG = new MultipartConfigElement("c:/temp");
...
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String contentType = request.getContentType();
if(contentType != null && contentType.startsWith("multipart/")){
request.setAttribute(Request.__MULTIPART_CONFIG_ELEMENT, MULTI_PART_CONFIG);
for(Part part: request.getParts()) { ... } ;
} else {
...
}
}
I think that this solution may be useful for developers who faced such problem