Hi Jakub,
Thanks for the quick reply. I did find an Entity Provider and was using it.
I removed it from the classpath and I get the below exception when I perform
HTTP GET against the /topspamsenderchart resource. Is the Jersey provided
writer implemented by default or is there some extra configuration I need to
do? I have experimented with Jackson yet and would like to try the Jersey
writer, but it looks like I have some dependency issue. I did some
searching and it seems to be a JSON dependency issue, but I do have the
json-lib-2.2.3-jdk15.jar on the classpath...so I'm a bit stumped here. Any
ideas?
Resource Method:
@GET
@Path("/topspamsenderchart")
@Produces("application/json")
public Response getTopSpamSenderChartTest1() throws Exception{
ChartSpecification chartSpec = new ChartSpecification();
chartSpec.setWidth(new Double(700));
chartSpec.setHeight(new Double(500));
chartSpec.setChartType("4");
return Response.ok(chartSpec).type("application/json").build();
}
Exception:
javax.ws.rs.WebApplicationException
at
com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:253)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:814)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:740)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:731)
at
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:372)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:452)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:633)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Unknown Source)
Jakub Podlesak wrote:
>
>
> Hi,
>
> please see inline...
>
> On Tue, Dec 15, 2009 at 04:28:01PM -0800, cgswtsu78 wrote:
>>
>> Hello,
>>
>> When I perform an HTTP GET request against the below resource method I
>> get a
>> net.sf.json.JSONException: There is a cycle in the hierarchy! (see below
>> for
>> full stack trace). The problem seems to be associated to returning an
>> instance of the ImageDetails object after it is retrieved from the
>> ClientResponse.getEntity method. The ImageDetails object is successfully
>> retrieved but when I try to pass that retrieved instance back I get the
>> JSONException. When I just create a new version of ImageDetails and
>> return
>> that the below method works fine. Any ideas?
>>
>> @GET
>> @Path("/topspamsenderchart")
>> @Produces("application/json")
>> public ImageDetails getTopSpamSenderChart() throws Exception{
>>
>> Client client = Client.create();
>> WebResource webResource =
>> client.resource("http://localhost:8080/ChartWebWiz/jersey/chartsvcs/");
>> ClientResponse response =
>> webResource.path("topspamsenderchart").type(MediaType.APPLICATION_XML).post(ClientResponse.class,
>> chartSpec);
>>
>> ImageDetails imgDetails = response.getEntity(ImageDetails.class);
>> return imgDetails;
>> }
>>
>>
>> Stack Trace:
>> net.sf.json.JSONException: There is a cycle in the hierarchy!
>>
>> net.sf.json.util.CycleDetectionStrategy$StrictCycleDetectionStrategy.handleRepeatedReferenceAsObject(CycleDetectionStrategy.java:97)
>> net.sf.json.JSONObject._fromBean(JSONObject.java:859)
>> net.sf.json.JSONObject.fromObject(JSONObject.java:194)
>> net.sf.json.JSONObject._processValue(JSONObject.java:2793)
>> net.sf.json.JSONObject._setInternal(JSONObject.java:2817)
>> net.sf.json.JSONObject.setValue(JSONObject.java:1527)
>> net.sf.json.JSONObject._fromBean(JSONObject.java:946)
>> net.sf.json.JSONObject.fromObject(JSONObject.java:194)
>> net.sf.json.JSONObject._processValue(JSONObject.java:2793)
>> net.sf.json.JSONObject._setInternal(JSONObject.java:2817)
>> net.sf.json.JSONObject.setValue(JSONObject.java:1527)
>> net.sf.json.JSONObject._fromBean(JSONObject.java:946)
>> net.sf.json.JSONObject.fromObject(JSONObject.java:194)
>> net.sf.json.JSONObject._processValue(JSONObject.java:2793)
>> net.sf.json.JSONObject._setInternal(JSONObject.java:2817)
>> net.sf.json.JSONObject.setValue(JSONObject.java:1527)
>> net.sf.json.JSONObject._fromBean(JSONObject.java:946)
>> net.sf.json.JSONObject.fromObject(JSONObject.java:194)
>> net.sf.json.JSONObject._processValue(JSONObject.java:2793)
>> net.sf.json.JSONObject._setInternal(JSONObject.java:2817)
>> net.sf.json.JSONObject.setValue(JSONObject.java:1527)
>> net.sf.json.JSONObject._fromBean(JSONObject.java:946)
>> net.sf.json.JSONObject.fromObject(JSONObject.java:194)
>> net.sf.json.JSONArray.fromObject(JSONArray.java:194)
>> net.sf.json.JSONSerializer.toJSON(JSONSerializer.java:113)
>> net.sf.json.JSONSerializer.toJSON(JSONSerializer.java:84)
>>
>> com.proofpoint.resources.chartsvcs.impl.MyEntityProvider.writeTo(MyEntityProvider.java:33)
>
> you are apparently using either your own or a 3rd party entity writer,
> com.proofpoint.resources.chartsvcs.impl.MyEntityProvider.
> It is hard to diagnose your issue, given that i have no clue what it does.
>
> By any chance, have you tried using either Jersey provided writer
> or the Jackson writer?
>
> ~Jakub
>
>>
>> com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:266)
>>
>> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:814)
>>
>> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:740)
>>
>> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:731)
>>
>> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:372)
>>
>> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:452)
>>
>> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:633)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>>
>> --
>> View this message in context:
>> http://n2.nabble.com/net-sf-json-JSONException-There-is-a-cycle-in-the-hierarchy-tp4173118p4173118.html
>> Sent from the Jersey mailing list archive at Nabble.com.
>>
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>
> --
> http://blogs.sun.com/japod
>
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