【发布时间】：2017-06-02 07:13:11
【问题描述】：
我正在尝试在 mule（自定义转换器）中创建自定义 Json 到 XML 的转换，它只是一对一的直接映射值，而不是复杂的转换。
这是我的流程：
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:json="http://www.mulesoft.org/schema/mule/json" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/json http://www.mulesoft.org/schema/mule/json/current/mule-json.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd">
<http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" basePath="/test" doc:name="HTTP Listener Configuration"/>
<flow name="test_finalFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/" doc:name="HTTP"/>
<json:json-to-xml-transformer metadata:id="57c0cd3d-ece4-48fe-9adf-79fc36a31b12" doc:name="JSON to XML"/>
<logger level="INFO" doc:name="Logger"/>
</flow>
</mule>
我正在使用这些文件来配置我的 Json to XML 组件
jsonFile.json：
{
"inData": "value"
}
xml 文件：outData.xml
<?xml version='1.0' encoding='UTF-8'?>
<root>
<outData>someValue</outData>
</root>
设置元数据：
现在我部署应用程序时没有任何问题，
但是当我使用邮递员发送带有有效负载的 POST 数据时我收到了这些错误：
这是控制台的完整输出：
*******************************************************************************************************
* - - + APPLICATION + - - * - - + DOMAIN + - - * - - + STATUS + - - *
*******************************************************************************************************
* test_final * default * DEPLOYED *
*******************************************************************************************************
ERROR 2017-01-17 21:23:29,014 [[test_final].HTTP_Listener_Configuration.worker.01] org.mule.exception.DefaultMessagingExceptionStrategy:
********************************************************************************
Message : java.io.IOException: Illegal character: <i> (javax.xml.stream.XMLStreamException)
Payload : org.glassfish.grizzly.utils.BufferInputStream@526ed3db
Transformer : JsonToXml{this=6993c8df, name='JsonToString', ignoreBadInput=false, returnClass=SimpleDataType{type=java.lang.String, mimeType='text/xml', encoding='null'}, sourceTypes=[SimpleDataType{type=java.lang.String, mimeType='*/*', encoding='null'}, SimpleDataType{type=java.io.InputStream, mimeType='*/*', encoding='null'}, SimpleDataType{type=[B, mimeType='*/*', encoding='null'}, SimpleDataType{type=java.io.Reader, mimeType='*/*', encoding='null'}, SimpleDataType{type=java.net.URL, mimeType='*/*', encoding='null'}, SimpleDataType{type=java.io.File, mimeType='*/*', encoding='null'}]}
Element : /test_finalFlow/processors/0 @ test_final:test_final.xml:13 (JSON to XML)
Element XML : <json:json-to-xml-transformer metadata:id="57c0cd3d-ece4-48fe-9adf-79fc36a31b12" doc:name="JSON to XML"></json:json-to-xml-transformer>
--------------------------------------------------------------------------------
Root Exception stack trace:
java.io.IOException: Illegal character: <i>
at de.odysseus.staxon.json.stream.impl.Yylex.yylex(Yylex.java:641)
at de.odysseus.staxon.json.stream.impl.Yylex.nextSymbol(Yylex.java:271)
at de.odysseus.staxon.json.stream.impl.JsonStreamSourceImpl.next(JsonStreamSourceImpl.java:107)
at de.odysseus.staxon.json.stream.impl.JsonStreamSourceImpl.peek(JsonStreamSourceImpl.java:250)
at de.odysseus.staxon.json.JsonXMLStreamReader.consume(JsonXMLStreamReader.java:128)
at de.odysseus.staxon.json.JsonXMLStreamReader.consume(JsonXMLStreamReader.java:161)
at de.odysseus.staxon.base.AbstractXMLStreamReader.initialize(AbstractXMLStreamReader.java:216)
at de.odysseus.staxon.json.JsonXMLStreamReader.<init>(JsonXMLStreamReader.java:65)
at de.odysseus.staxon.json.JsonXMLInputFactory.createXMLStreamReader(JsonXMLInputFactory.java:139)
at de.odysseus.staxon.json.JsonXMLInputFactory.createXMLStreamReader(JsonXMLInputFactory.java:120)
at de.odysseus.staxon.json.JsonXMLInputFactory.createXMLStreamReader(JsonXMLInputFactory.java:44)
at org.mule.module.json.transformers.JsonToXml.doTransform(JsonToXml.java:55)
at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:415)
at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:366)
at org.mule.DefaultMuleMessage.transformMessage(DefaultMuleMessage.java:1589)
at org.mule.DefaultMuleMessage.applyAllTransformers(DefaultMuleMessage.java:1488)
at org.mule.DefaultMuleMessage.applyTransformers(DefaultMuleMessage.java:1462)
at org.mule.DefaultMuleMessage.applyTransformers(DefaultMuleMessage.java:1454)
at org.mule.transformer.AbstractTransformer.process(AbstractTransformer.java:114)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
at org.mule.processor.AsyncInterceptingMessageProcessor.process(AsyncInterceptingMessageProcessor.java:102)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
at org.mule.construct.DynamicPipelineMessageProcessor.process(DynamicPipelineMessageProcessor.java:55)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
知道导致错误的原因吗？
java.io.IOException: 非法字符：i ?
注意：
我正在尝试创建此自定义转换器，因为我现在只使用Mule server 3.8.1 CE，我将很快获得企业版版本，这就是我尝试在社区版服务器中部署的原因时间。
【问题讨论】：
标签： json xml mule anypoint-studio transformer