带有 JAXB Random ClassCastException .. 的 Netbeans 无法转换为 com.sun.xml.bind.v2.runtime.reflect.Accessor

2022-01-19 00:00:00 netbeans netbeans-7 java jaxb jaxb2

我已经从 SOAP 服务下载了 Soap 消息，并尝试通过返回下载的消息来模拟 Soap 服务.以下代码显示了我如何将 Soap 消息解组为所需的响应

I have downloaded the Soap messages from a SOAP Service and trying to mock the Soap service by returning the downloaded messages. the following code shows how I am Unmarshalling the Soap message into the required Response

    public static DataClientType unmarshallFile(String fileName) throws Exception {
    XMLInputFactory xif = XMLInputFactory.newFactory();
    XMLStreamReader xsr = xif.createXMLStreamReader(ClientSampleSoapResponseData.class.getResourceAsStream(fileName));
    xsr.nextTag(); // Advance to Envelope tag
    xsr.nextTag(); // Advance to Header
    xsr.nextTag(); // Advance to Body tag
    xsr.nextTag(); // Advance to getClientByAccountResponse
    xsr.nextTag(); // Advance to content of getClientByAccountResponse

    JAXBContext jc = JAXBContext.newInstance(GetClientByAccountResponse.class);
    Unmarshaller unmarshaller = jc.createUnmarshaller();
    JAXBElement<GetClientByAccountResponse> je = unmarshaller.unmarshal(xsr, GetClientByAccountResponse.class);

    return je.getValue().getClientDataContract();
}

但是，我不断收到这个随机发生的 ClassCastExeption.经过多次测试迭代后，它开始发生.有时清理和构建会修复它，但有时它不起作用.

However I keep getting this ClassCastExeption which happens randomly. After a number of test iterations, it begins to happen. Sometimes a clean and build fixes it but sometimes it doesn't work.

java.lang.ClassCastException: com.x.X.X.X.GetClientByAccountResponse$JaxbAccessorF_clientDataContract cannot be cast to com.sun.xml.bind.v2.runtime.reflect.Accessor
at com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.instanciate(OptimizedAccessorFactory.java:188)
at com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:180)
at com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:256)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:90)

我已经尝试过其他在线建议，例如恢复到旧的 jaxb 版本并在 maven 编译器配置中使用背书文件夹，但它仍然会发生

I have tried other online suggestions such as reverting to old jaxb versions and using endorsed folders in the maven compiler configuration but it still happens

关于可能导致它的原因和可能的解决方案有什么想法吗?

Any ideas on what could be causing it and possible solutions?

谢谢你

推荐答案

用以下代码解决

@BeforeClass
public static  void init(){ 
    System.setProperty( "com.sun.xml.bind.v2.bytecode.ClassTailor.noOptimize", "true");
}

@AfterClass
public static void revert(){ 
    System.getProperties().remove("com.sun.xml.bind.v2.bytecode.ClassTailor.noOptimize");
}

参数也可以在JVM上使用

Parameter can also be set at JVM using 

-Dcom.sun.xml.bind.v2.bytecode.ClassTailor.noOptimize=true

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