I'm using stand alone wiremock instance to test POST functionality of a testing framework:
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 500 INTERNAL_SERVER_ERROR</title>
</head>
<body><h2>HTTP ERROR 500</h2>
<p>Problem accessing /postTest. Reason:
<pre> INTERNAL_SERVER_ERROR</pre></p><h3>Caused by:</h3><pre>java.lang.NullPointerException
at com.github.tomakehurst.wiremock.http.ResponseDefinition.copyOf(ResponseDefinition.java:56)
at com.github.tomakehurst.wiremock.stubbing.InMemoryStubMappings.serveFor(InMemoryStubMappings.java:46)
at com.github.tomakehurst.wiremock.core.WireMockApp.serveStubFor(WireMockApp.java:92)
at com.github.tomakehurst.wiremock.http.StubRequestHandler.handleRequest(StubRequestHandler.java:35)
at com.github.tomakehurst.wiremock.http.AbstractRequestHandler.handle(AbstractRequestHandler.java:38)
at com.github.tomakehurst.wiremock.jetty6.Jetty6HandlerDispatchingServlet.service(Jetty6HandlerDispatchingServlet.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at wiremock.org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at wiremock.org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401)
at wiremock.org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at wiremock.org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at wiremock.org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at wiremock.org.mortbay.jetty.Server.handle(Server.java:326)
at wiremock.org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at wiremock.org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
at wiremock.org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
at wiremock.org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at wiremock.org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at wiremock.org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at com.github.tomakehurst.wiremock.jetty6.DelayableSocketConnector$1.run(DelayableSocketConnector.java:49)
at wiremock.org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
</pre>
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