使用 Script Mediator 在 WSO Api manager 3.2 中将 XML 转换为 JSON
Transforming XML to JSON in WSO Api manager 3.2 using Script Mediator
描述： 我正在尝试使用 wso2 3.2 api 管理器中的脚本中介从 xml 转换为 json。我面临的问题是脚本调解器方法 getPayloadXML() 无法从 xml 中提取特定值，它总是 returns 因为 ReferenceError: "code" is not defined。我尝试了多种方法，但无法弄清楚如何实现这一目标。如果有人提供帮助，我们将不胜感激。
响应调解
<sequence xmlns="http://ws.apache.org/ns/synapse" name="transform">
<script language="js"><![CDATA[
var envelope = mc.getPayloadXML()..*::fault-code.toString()
var request ={"data":{"success":"true","message":"SuccessFull","faultcode":envelope}};
mc.setPayloadJSON(request);
]]></script>
<log level="full">
<property name="Message" value="UpdatedMessage"/>
</log>
<property name="HTTP_SC" value="200" scope="axis2" />
<property name="messageType" value="application/json" scope="axis2"/>
</sequence>
原始回复
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope" xmlns:wsa="http://www.w3.org/2005/08/addressing" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Header>
<wsa:MessageID>210419-BA7CF-32444</wsa:MessageID>
<wsa:RelatesTo>Test123456</wsa:RelatesTo>
<wsa:To>http://www.w3.org/2005/08/addressing/anonymous</wsa:To>
<wsa:From>
<wsa:Address>some data</wsa:Address>
</wsa:From>
<wsa:Action>some data</wsa:Action>
</soapenv:Header>
<soapenv:Body>
<cbo:response xmlns:abr="url" xmlns:asic="url" client-reference1="A1" response-type="error" version="1.2">
<cbo:error>
<cbo:fault-code>CBOX017</cbo:fault-code>
<cbo:fault-string>User account is inactive.</cbo:fault-string>
<cbo:fault-actor/>
<cbo:detail/>
</cbo:error>
</cbo:response>
</soapenv:Body>
</soapenv:Envelope>
预期响应（转换为 JSON）
{
"data": {
"success": "true",
"message": "SuccessFull",
"faultcode":CBOX017
}
}
错误日志
TID: [-1234] [] [2021-04-19 16:14:41,259] ERROR {org.apache.synapse.mediators.bsf.ScriptMediator} - {api:admin--equifaxACNCheck:v1.0.0} The script engine returned an error executing the inlined js script function mediate com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2) in <Unknown Source> at line number 2
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.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate_aroundBody0(APIManagerExtensionHandler.java:73)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate(APIManagerExtensionHandler.java:58)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse_aroundBody4(APIManagerExtensionHandler.java:132)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse(APIManagerExtensionHandler.java:120)
at org.apache.synapse.rest.API.process(API.java:371)
at org.apache.synapse.rest.RESTRequestHandler.apiProcessNonDefaultStrategy(RESTRequestHandler.java:144)
at org.apache.synapse.rest.RESTRequestHandler.identifyAPI(RESTRequestHandler.java:164)
at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:90)
at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:60)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:331)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:583)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:197)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:285)
at org.apache.axis2.transport.base.threads.NativeWorkerPool.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.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3687)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3665)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3750)
at org.mozilla.javascript.ScriptRuntime.name(ScriptRuntime.java:1728)
at org.mozilla.javascript.gen._Unknown_Source__2233._c_script_0(<Unknown Source>:2)
at org.mozilla.javascript.gen._Unknown_Source__2233.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__2233.call(<Unknown Source>)
at org.mozilla.javascript.gen._Unknown_Source__2233.exec(<Unknown Source>)
at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:55)
... 25 more
TID: [-1234] [] [2021-04-19 16:14:41,267] ERROR {API_LOGGER.admin--equifaxACNCheck} - The script engine returned an error executing the inlined js script function mediate com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2) in <Unknown Source> at line number 2
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.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate_aroundBody0(APIManagerExtensionHandler.java:73)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate(APIManagerExtensionHandler.java:58)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse_aroundBody4(APIManagerExtensionHandler.java:132)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse(APIManagerExtensionHandler.java:120)
at org.apache.synapse.rest.API.process(API.java:371)
at org.apache.synapse.rest.RESTRequestHandler.apiProcessNonDefaultStrategy(RESTRequestHandler.java:144)
at org.apache.synapse.rest.RESTRequestHandler.identifyAPI(RESTRequestHandler.java:164)
at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:90)
at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:60)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:331)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:583)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:197)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:285)
at org.apache.axis2.transport.base.threads.NativeWorkerPool.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.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3687)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3665)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3750)
at org.mozilla.javascript.ScriptRuntime.name(ScriptRuntime.java:1728)
at org.mozilla.javascript.gen._Unknown_Source__2233._c_script_0(<Unknown Source>:2)
at org.mozilla.javascript.gen._Unknown_Source__2233.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__2233.call(<Unknown Source>)
at org.mozilla.javascript.gen._Unknown_Source__2233.exec(<Unknown Source>)
at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:55)
... 25 more
ScriptMediator 似乎在解析 fault-code 时出现问题。我认为这是因为连字符 - 在 JavaScript 和 E4X 中已经具有意义。也许您可以使用 PayloadFactory 的替代调解，如下所示：
<sequence xmlns="http://ws.apache.org/ns/synapse" name="transform">
<payloadFactory media-type="json">
<format>{"data":{"success":"", "message":"", "faultcode":""}}</format>
<args>
<arg literal="false" value="true"/>
<arg literal="false" value="SuccessFull"/>
<arg evaluator="xml" expression="//*:fault-code"
literal="false" xmlns:ns="http://org.apache.synapse/xsd"/>
</args>
</payloadFactory>
<log level="full">
<property name="Message" value="UpdatedMessage"/>
</log>
<property name="HTTP_SC" value="200" scope="axis2" />
</sequence>
不需要 <property name="messageType" value="application/json" scope="axis2"/>，因为负载工厂应该设置它。
描述： 我正在尝试使用 wso2 3.2 api 管理器中的脚本中介从 xml 转换为 json。我面临的问题是脚本调解器方法 getPayloadXML() 无法从 xml 中提取特定值，它总是 returns 因为 ReferenceError: "code" is not defined。我尝试了多种方法，但无法弄清楚如何实现这一目标。如果有人提供帮助，我们将不胜感激。
响应调解
<sequence xmlns="http://ws.apache.org/ns/synapse" name="transform">
<script language="js"><![CDATA[
var envelope = mc.getPayloadXML()..*::fault-code.toString()
var request ={"data":{"success":"true","message":"SuccessFull","faultcode":envelope}};
mc.setPayloadJSON(request);
]]></script>
<log level="full">
<property name="Message" value="UpdatedMessage"/>
</log>
<property name="HTTP_SC" value="200" scope="axis2" />
<property name="messageType" value="application/json" scope="axis2"/>
</sequence>
原始回复
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope" xmlns:wsa="http://www.w3.org/2005/08/addressing" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Header>
<wsa:MessageID>210419-BA7CF-32444</wsa:MessageID>
<wsa:RelatesTo>Test123456</wsa:RelatesTo>
<wsa:To>http://www.w3.org/2005/08/addressing/anonymous</wsa:To>
<wsa:From>
<wsa:Address>some data</wsa:Address>
</wsa:From>
<wsa:Action>some data</wsa:Action>
</soapenv:Header>
<soapenv:Body>
<cbo:response xmlns:abr="url" xmlns:asic="url" client-reference1="A1" response-type="error" version="1.2">
<cbo:error>
<cbo:fault-code>CBOX017</cbo:fault-code>
<cbo:fault-string>User account is inactive.</cbo:fault-string>
<cbo:fault-actor/>
<cbo:detail/>
</cbo:error>
</cbo:response>
</soapenv:Body>
</soapenv:Envelope>
预期响应（转换为 JSON）
{
"data": {
"success": "true",
"message": "SuccessFull",
"faultcode":CBOX017
}
}
错误日志
TID: [-1234] [] [2021-04-19 16:14:41,259] ERROR {org.apache.synapse.mediators.bsf.ScriptMediator} - {api:admin--equifaxACNCheck:v1.0.0} The script engine returned an error executing the inlined js script function mediate com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2) in <Unknown Source> at line number 2
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.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate_aroundBody0(APIManagerExtensionHandler.java:73)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate(APIManagerExtensionHandler.java:58)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse_aroundBody4(APIManagerExtensionHandler.java:132)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse(APIManagerExtensionHandler.java:120)
at org.apache.synapse.rest.API.process(API.java:371)
at org.apache.synapse.rest.RESTRequestHandler.apiProcessNonDefaultStrategy(RESTRequestHandler.java:144)
at org.apache.synapse.rest.RESTRequestHandler.identifyAPI(RESTRequestHandler.java:164)
at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:90)
at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:60)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:331)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:583)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:197)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:285)
at org.apache.axis2.transport.base.threads.NativeWorkerPool.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.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3687)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3665)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3750)
at org.mozilla.javascript.ScriptRuntime.name(ScriptRuntime.java:1728)
at org.mozilla.javascript.gen._Unknown_Source__2233._c_script_0(<Unknown Source>:2)
at org.mozilla.javascript.gen._Unknown_Source__2233.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__2233.call(<Unknown Source>)
at org.mozilla.javascript.gen._Unknown_Source__2233.exec(<Unknown Source>)
at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:55)
... 25 more
TID: [-1234] [] [2021-04-19 16:14:41,267] ERROR {API_LOGGER.admin--equifaxACNCheck} - The script engine returned an error executing the inlined js script function mediate com.sun.phobos.script.util.ExtendedScriptException: org.mozilla.javascript.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2) in <Unknown Source> at line number 2
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.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate_aroundBody0(APIManagerExtensionHandler.java:73)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.mediate(APIManagerExtensionHandler.java:58)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse_aroundBody4(APIManagerExtensionHandler.java:132)
at org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerExtensionHandler.handleResponse(APIManagerExtensionHandler.java:120)
at org.apache.synapse.rest.API.process(API.java:371)
at org.apache.synapse.rest.RESTRequestHandler.apiProcessNonDefaultStrategy(RESTRequestHandler.java:144)
at org.apache.synapse.rest.RESTRequestHandler.identifyAPI(RESTRequestHandler.java:164)
at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:90)
at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:60)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:331)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:583)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:197)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:285)
at org.apache.axis2.transport.base.threads.NativeWorkerPool.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.EcmaError: ReferenceError: "code" is not defined. (<Unknown Source>#2)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3687)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3665)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3750)
at org.mozilla.javascript.ScriptRuntime.name(ScriptRuntime.java:1728)
at org.mozilla.javascript.gen._Unknown_Source__2233._c_script_0(<Unknown Source>:2)
at org.mozilla.javascript.gen._Unknown_Source__2233.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__2233.call(<Unknown Source>)
at org.mozilla.javascript.gen._Unknown_Source__2233.exec(<Unknown Source>)
at com.sun.phobos.script.javascript.RhinoCompiledScript.eval(RhinoCompiledScript.java:55)
... 25 more
ScriptMediator 似乎在解析 fault-code 时出现问题。我认为这是因为连字符 - 在 JavaScript 和 E4X 中已经具有意义。也许您可以使用 PayloadFactory 的替代调解，如下所示：
<sequence xmlns="http://ws.apache.org/ns/synapse" name="transform">
<payloadFactory media-type="json">
<format>{"data":{"success":"", "message":"", "faultcode":""}}</format>
<args>
<arg literal="false" value="true"/>
<arg literal="false" value="SuccessFull"/>
<arg evaluator="xml" expression="//*:fault-code"
literal="false" xmlns:ns="http://org.apache.synapse/xsd"/>
</args>
</payloadFactory>
<log level="full">
<property name="Message" value="UpdatedMessage"/>
</log>
<property name="HTTP_SC" value="200" scope="axis2" />
</sequence>
不需要 <property name="messageType" value="application/json" scope="axis2"/>，因为负载工厂应该设置它。