Exception while trying to get value from a json object in java webservice -


when tried value json object in java webservice side getting runtime exceptions,please find exception getting below:
when tried value json object in java webservice side getting runtime exceptions, please find json object below:

{"data":[{"userid":657,"name":"eliina","username":"admin","aim_name":" eliina ","aim_title":"administrator","password":"eli456456","role":1,"rolename":"client ain","clientno":"540","id":8,"client_name":"eliina","defaulturl":"clientsettings.htm","attempts":0,"aimaccess":1}]}

please find java method wrote:

public void insertlist(string ip, jsonobject loginresult)  {       try{         string n = loginresult.getstring("data");     } catch( jsonexception je ) {         je.printstacktrace();     } }

please find exception getting below: 

30-sep-2015 10:27:11.007 info [http-nio-8084-exec-10] org.apache.catalina.startup.hostconfig.deploydescriptor deployment of configuration descriptor /home/ty02/.netbeans/8.0.2/apache-tomcat-8.0.15.0_base/conf/catalina/localhost/mobileservice.xml has finished in 2,217 ms org.codehaus.jettison.json.jsonexception: jsonobject["username"] not found.     @ org.codehaus.jettison.json.jsonobject.get(jsonobject.java:360)     @ org.codehaus.jettison.json.jsonobject.getstring(jsonobject.java:487)     @ com.zimmer.mobileservice.resources.login.insertauditlist(login.java:84)     @ com.zimmer.mobileservice.resources.login.checklogin(login.java:71)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:606)     @ com.sun.jersey.spi.container.javamethodinvokerfactory$1.invoke(javamethodinvokerfactory.java:60)     @ com.sun.jersey.server.impl.model.method.dispatch.abstractresourcemethoddispatchprovider$typeoutinvoker._dispatch(abstractresourcemethoddispatchprovider.java:185)     @ com.sun.jersey.server.impl.model.method.dispatch.resourcejavamethoddispatcher.dispatch(resourcejavamethoddispatcher.java:75)     @ com.sun.jersey.server.impl.uri.rules.httpmethodrule.accept(httpmethodrule.java:288)     @ com.sun.jersey.server.impl.uri.rules.resourceclassrule.accept(resourceclassrule.java:108)     @ com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept(righthandpathrule.java:147)     @ com.sun.jersey.server.impl.uri.rules.rootresourceclassesrule.accept(rootresourceclassesrule.java:84)     @ com.sun.jersey.server.impl.application.webapplicationimpl._handlerequest(webapplicationimpl.java:1469)     @ com.sun.jersey.server.impl.application.webapplicationimpl._handlerequest(webapplicationimpl.java:1400)     @ com.sun.jersey.server.impl.application.webapplicationimpl.handlerequest(webapplicationimpl.java:1349)     @ com.sun.jersey.server.impl.application.webapplicationimpl.handlerequest(webapplicationimpl.java:1339)     @ com.sun.jersey.spi.container.servlet.webcomponent.service(webcomponent.java:416)     @ com.sun.jersey.spi.container.servlet.servletcontainer.service(servletcontainer.java:537)     @ com.sun.jersey.spi.container.servlet.servletcontainer.service(servletcontainer.java:708)     @ javax.servlet.http.httpservlet.service(httpservlet.java:725)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:291)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206)     @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206)     @ org.netbeans.modules.web.monitor.server.monitorfilter.dofilter(monitorfilter.java:393)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:219)     @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:106)     @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:501)     @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:142)     @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:79)     @ org.apache.catalina.valves.abstractaccesslogvalve.invoke(abstractaccesslogvalve.java:610)     @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:88)     @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:537)     @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1085)     @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:658)     @ org.apache.coyote.http11.http11nioprotocol$http11connectionhandler.process(http11nioprotocol.java:222)     @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1556)     @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.run(nioendpoint.java:1513)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615)     @ org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61)     @ java.lang.thread.run(thread.java:745)

your input json is,

{"data":[{"userid":657,"name":"eliina","username":"admin","aim_name":" eliina ","aim_title":"administrator","password":"eli456456","role":1,"rolename":"client ain","clientno":"540","id":8,"client_name":"eliina","defaulturl":"clientsettings.htm","attempts":0,"aimaccess":1}]}

so means key data, value jsonarray, trying jsonarray string facing such exception. need is, need value jsonarray like,

jsonarray value = loginresult.getjsonarray("data");

edited answer:

now value jsonarray contains array object can key like,

jsonarray value = loginresult.getjsonarray("data"); string userid = ((jsonobject) value.get(0)).getstring("userid");

better check haskey check , array size check avoid nasty exceptions.


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