如何解决将 javaScript 添加到 wso2 的错误？

Question

I'm trying to add this script (for grouping json response), it is works in online jsvascript test but in wso2 it returns 202 Accepted in postman and return empty (the "field" is the name of json array and "Libraryid" the key I want to grouped by:

  <api xmlns="http://ws.apache.org/ns/synapse" name="obj" context="/obj">
   <resource methods="POST GET" url-mapping="/get">
      <inSequence>
         <log/>
         <script language="js">payload = mc.getPayloadJSON(); var result= payload.field.reduce(function(result, current) {    result[current.Libraryid] = result[current.Libraryid] || [];    result[current.Libraryid].push(current);    return result;}, {});  mc.setPayloadJSON(result);</script>
         <property name="messageType" value="application/json" scope="axis2" type="STRING"/>
         <respond/>
      </inSequence>
   </resource>
</api>

the error is:

ERROR - obj The script engine returned an error executing the inlined js script function mediate
com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.WrappedException: Wrapped java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String (<Unknown Source>#1) in <Unknown Source> at line number 1
        at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:68)
        at javax.script.CompiledScript.eval(CompiledScript.java:92)
        at org.apache.synapse.mediators.bsf.ScriptMediator.mediateForInlineScript(ScriptMediator.java:395)
        at org.apache.synapse.mediators.bsf.ScriptMediator.invokeScript(ScriptMediator.java:290)
        at org.apache.synapse.mediators.bsf.ScriptMediator.mediate(ScriptMediator.java:258)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:109)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158)
        at org.apache.synapse.rest.Resource.process(Resource.java:363)
        at org.apache.synapse.rest.API.process(API.java:431)
        at org.apache.synapse.rest.RESTRequestHandler.apiProcess(RESTRequestHandler.java:135)
        at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:113)
        at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:71)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:325)
        at org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:92)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
        at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:338)
        at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:383)
        at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:152)
        at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.mozilla.javascript.WrappedException: Wrapped java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String (<Unknown Source>#1)
        at org.mozilla.javascript.Context.throwAsScriptRuntimeEx(Context.java:1754)
        at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:148)
        at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:225)
        at org.mozilla.javascript.optimizer.OptRuntime.call1(OptRuntime.java:32)
        at org.mozilla.javascript.gen._Unknown_Source__480._c_script_0(<Unknown Source>:1)
        at org.mozilla.javascript.gen._Unknown_Source__480.call(<Unknown Source>)
        at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:394)
        at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3091)
        at org.mozilla.javascript.gen._Unknown_Source__480.call(<Unknown Source>)
        at org.mozilla.javascript.gen._Unknown_Source__480.exec(<Unknown Source>)
        at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:55)
        ... 22 more
Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
        at org.apache.synapse.mediators.bsf.CommonScriptMessageContext.serializeJson(CommonScriptMessageContext.java:996)
        at org.apache.synapse.mediators.bsf.CommonScriptMessageContext.setPayloadJSON(CommonScriptMessageContext.java:957)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:126)
        ... 31 more

can anyone help me? I spent 2 weeks to solve the problem..

Answer 1

Because Wso2 does not accept any methods in javascript, so you should write javascript code in basic format without any methods.