Mule-MuleMessage.getPayloadString（）为我提供了java.io.IOException:错误的块大小

我使用Mule 3.5.0

我有一个mule配置，在这里我接受HTTP请求，向它们添加一个SOAP头，并将它们转发到一个外部服务，然后返回该服务调用的结果：

因为我想看到发生了什么，所以我将生成的请求和响应消息写入文件夹。（请求和答复部分）

出于测试目的，我使用MuleClient功能创建了一个测试方法：

@Test
public void testOnlineServiceFlow() throws Exception
{
    MuleClient client = new MuleClient(muleContext);
    MuleMessage result = client.send("http://localhost:1234/in", "<acc:AccountDetailsRequest xmlns:acc=\"http://com/blog/samples/webservices/accountservice\"><acc:accountNumber>12345</acc:accountNumber></acc:AccountDetailsRequest>", null);
    System.out.println(result.getPayloadAsString());
}

我不知道这次失败的原因是什么，我怎样才能解决它。我的流配置可能有问题

<flow name="Online_Service" doc:name="Online_Service">
    <http:inbound-endpoint exchange-pattern="request-response" name="clientEndpoint" address="http://localhost:1234/in" doc:name="HTTP" contentType="text/xml"/>
    <component doc:name="SOAP Header Creator">
        <spring-object bean="SoapHeaderCreatorBean"/>
    </component>
    <file:outbound-endpoint path="C:/mule/Online/OUT" responseTimeout="10000" doc:name="Requests"/>
    <http:outbound-endpoint exchange-pattern="request-response" address="http://localhost:8080/spring-webservices-sample/endpoints" doc:name="HTTP"  method="POST" />
    <file:outbound-endpoint path="C:/mule/Online/OUT" responseTimeout="10000" doc:name="Responses"/>
</flow>    

---

似乎http:outbound端点正在给您一个流，而文件outbound端点正在使用这个流。您应该在http出站端点之后放置一个转换器（例如object to string），以确保流存储在内存中，并且在将响应返回给http入站端点之前不会被消耗

org.mule.api.transformer.TransformerException: Could not read InputStream.
    at org.mule.transformer.simple.ObjectToString.createStringFromInputStream(ObjectToString.java:83)
    at org.mule.transformer.simple.ObjectToString.doTransform(ObjectToString.java:54)
    at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:419)
    at org.mule.DefaultMuleMessage.getPayload(DefaultMuleMessage.java:375)
    at org.mule.DefaultMuleMessage.getPayloadAsString(DefaultMuleMessage.java:630)
    at org.mule.DefaultMuleMessage.getPayloadAsString(DefaultMuleMessage.java:565)
    at be.healthconnect.handicare.OnlineServiceTest.testOnlineServiceFlow(OnlineServiceTest.java:21)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:46)
    at org.junit.internal.runners.statements.FailOnTimeout$1.run(FailOnTimeout.java:28)
Caused by: java.io.IOException: Bad chunk size: HTTP/1.1 500 Internal Server Error
    at org.apache.commons.httpclient.ChunkedInputStream.getChunkSizeFromInputStream(ChunkedInputStream.java:306)
    at org.apache.commons.httpclient.ChunkedInputStream.nextChunk(ChunkedInputStream.java:221)
    at org.apache.commons.httpclient.ChunkedInputStream.read(ChunkedInputStream.java:176)
    at java.io.FilterInputStream.read(Unknown Source)
    at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:108)
    at java.io.FilterInputStream.read(Unknown Source)
    at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:127)
    at org.mule.model.streaming.DelegatingInputStream.read(DelegatingInputStream.java:54)
    at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)
    at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)
    at org.apache.commons.io.IOUtils.copy(IOUtils.java:1744)
    at org.mule.transformer.simple.ObjectToString.createStringFromInputStream(ObjectToString.java:78)
    ... 18 more

<flow name="Online_Service" doc:name="Online_Service">
    <http:inbound-endpoint exchange-pattern="request-response" name="clientEndpoint" address="http://localhost:1234/in" doc:name="HTTP" contentType="text/xml"/>
    <component doc:name="SOAP Header Creator">
        <spring-object bean="SoapHeaderCreatorBean"/>
    </component>
    <file:outbound-endpoint path="C:/mule/Online/OUT" responseTimeout="10000" doc:name="Requests"/>
    <http:outbound-endpoint exchange-pattern="request-response" address="http://localhost:8080/spring-webservices-sample/endpoints" doc:name="HTTP"  method="POST" />
    <file:outbound-endpoint path="C:/mule/Online/OUT" responseTimeout="10000" doc:name="Responses"/>
</flow>