Maximo REST API json formatting error

Question

When trying to GET data from this path:

/maxrest/rest/mbo/taskscheduler

I'm able to get the data in xml perfectly fine. But when I try to convert it to JSON using this parameter:

/maxrest/rest/mbo/taskscheduler?_format=json

I get a 500 server error and a null pointer exception in my logs when it tries to convert over to json. I have gotten this to work when getting other mbo data such as person, assets, etc... but the taskscheduler mbo is giving me issues. I thought maybe there was some bad data being returned, but when i filtered it down to just return the taskname string from taskscheduler, it still threw the error. So it seems to be an issue with the taskscheduler mbo. Any ideas?

EDIT

Here is the stacktrace:

05 Oct 2016 15:25:10:802 [ERROR] [MXServer] [CID-MXREST-73697] 
java.lang.NullPointerException
    at com.ibm.tivoli.maximo.rest.MboJSONStructure.setJSONObjectAttribute(MboJSONStructure.java:601)
    at com.ibm.tivoli.maximo.rest.MboJSONStructure.mbo2JSONObject(MboJSONStructure.java:491)
    at com.ibm.tivoli.maximo.rest.MboJSONStructure.serializeMboSetAsJSONObject(MboJSONStructure.java:294)
    at com.ibm.tivoli.maximo.rest.MboJSONStructure.serializeMboSetAsJSONObject(MboJSONStructure.java:126)
    at com.ibm.tivoli.maximo.rest.MboJSONSerializer.serializeResource(MboJSONSerializer.java:76)
    at com.ibm.tivoli.maximo.rest.MboSerializer.serialize(MboSerializer.java:274)
    at com.ibm.tivoli.maximo.rest.BaseResourceRequestHandler.generateResponse(BaseResourceRequestHandler.java:456)
    at com.ibm.tivoli.maximo.rest.BaseResourceRequestHandler.handleRequest(BaseResourceRequestHandler.java:343)
    at com.ibm.tivoli.maximo.rest.MaximoRestServlet.invokeRequestHandler(MaximoRestServlet.java:783)
    at com.ibm.tivoli.maximo.rest.MaximoRestServlet.doGet(MaximoRestServlet.java:336)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:575)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1232)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:781)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:480)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1114)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:940)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:463)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:530)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:316)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:287)
    at com.ibm.ws.ssl.channel.impl.SSLConnectionLink.determineNextChannel(SSLConnectionLink.java:1049)
    at com.ibm.ws.ssl.channel.impl.SSLConnectionLink$MyReadCompletedCallback.complete(SSLConnectionLink.java:643)
    at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
    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:1881)
05 Oct 2016 15:25:10:802 [INFO] [MXServer] [CID-MXREST-73697] Correlated data: BEGIN HttpSessionId:cGV-jEFXtHCp2ao6aqoDkL9 RequestParams:_lid=username&_lpwd=password&_format=json UserName:username ClientIP: RequestURI:/maxrest/rest/mbo/taskscheduler ElapsedTime:63 ms  END

please add the stacktrace from your logfile when you get the null pointer exception. — Jeroen, Sep 29 '16 at 13:57

score 0 · Answer 1 · answered May 14 '19 at 12:38

0

In system properties try edit mxe.rest.mbo.defaultformat=xml to mxe.rest.mbo.defaultformat=json. You can now execute your requestion without adding _format=json.

answered May 14 '19 at 12:38

Yacine Farhat

1
1

Maximo REST API json formatting error

1 Answers1