The stachtrace looks like this:
javax.servlet.ServletException: Content-Length must be specified
at com.google.gwt.user.server.rpc.RPCServletUtils.readContentAsUtf8
(RPCServletUtils.java:131)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.readContent
(RemoteServiceServlet.java:335)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost
(RemoteServiceServlet.java:77)
at org.gwtwidgets.server.spring.GWTRPCServiceExporter.handleRequest
(GWTRPCServiceExporter.java:169)
at
org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle
(HttpRequestHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch
(DispatcherServlet.java:857)
at org.springframework.web.servlet.DispatcherServlet.doService
(DispatcherServlet.java:792)
at org.springframework.web.servlet.FrameworkServlet.processRequest
(FrameworkServlet.java:475)
at org.springframework.web.servlet.FrameworkServlet.doGet
(FrameworkServlet.java:430)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol
$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:
665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:619)
I just ask myself if I I did choose the wrong way. Is it possible to
call simple servlets from GWT? I always read about RPC and
XMLHttpRequest.
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