POSTまたはGETのいずれかを介して呼び出されるサーブレットを実装しようとしています。
だから私はこのようなものを書きました
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
this.doGet(req, resp);
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// .. do stuff
// forward to welcome page
this.getServletContext().getRequestDispatcher("/guestbook.jsp").forward(req, resp);
return;
}
しかし/または最後に転送が原因で、IllegalStateExceptionが発生します。これは警告にすぎませんが、それでも発生します。私は別の方法で何をすべきですか？
ありがとう、
-lony
編集：必要なスタックトレース
2012-05-26 18:02:16.422:WARN::/wsc/guestbook
java.lang.IllegalStateException: Committed
at org.eclipse.jetty.server.Response.resetBuffer(Response.java:1056)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:216)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:115)
at de.tum.in.dss.GuestbookController.doGet(GuestbookController.java:135)
at de.tum.in.dss.GuestbookController.doPost(GuestbookController.java:37)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)
at de.tum.in.dss.XSSFilter.doFilter(XSSFilter.java:76)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
at de.tum.in.dss.AccessFilter.doFilter(AccessFilter.java:55)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:346)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220)
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
at java.lang.Thread.run(Thread.java:722)