https://developer.ibm.com/answers/questions/21854/datacontenthandler-requires-string-object-was-given-object-of-type-class-javautilarraylist/?community=wasdev

gistfile1.txt

/opt/IBM/WebSphere/AppServer/profiles/AppSrv01/logs/ffdc/server1_4b410cb9_14.08.06_05.50.34.9121485554497846906782.txt

[8/6/14 5:50:34:912 IST]     FFDC Exception:javax.servlet.ServletException SourceId:com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters -SE ProbeId:1078
javax.servlet.ServletException: java.io.IOException: "text/html" DataContentHandler requires String object, was given object of type class java.util.ArrayList
	at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:195)
	at org.apache.wink.server.internal.servlet.RestServlet.service(RestServlet.java:124)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1230)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:779)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1071)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3837)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:981)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:459)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:526)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:312)
	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:88)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1864)
Caused by: java.io.IOException: "text/html" DataContentHandler requires String object, was given object of type class java.util.ArrayList
	at com.sun.mail.handlers.text_plain.writeTo(text_plain.java:135)
	at org.apache.wink.server.internal.handlers.FlushResultHandler.handleResponse(FlushResultHandler.java:259)
	at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:38)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.internal.log.Responses.handleResponse(Responses.java:90)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
	at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
	at org.apache.wink.server.handlers.AbstractHandlersChain.run(AbstractHandlersChain.java:60)
	at org.apache.wink.server.internal.RequestProcessor.handleRequestWithoutFaultBarrier(RequestProcessor.java:232)
	at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:154)
	... 24 more

Reporter:null