用JAXB编组活动对象? [英] Marshalling an active object with JAXB?

问题描述

我试图封送一个将Thread扩展为XML的类，代码如下:

I am trying to marshal a class which extends Thread to XML, the code is as follows:

@XmlRootElement
public class TransitionXML extends Thread {

ArcXML[] preArcs;
ArcXML[] postArcs;
int[] preArcTokens;
int[] postArcTokens;
int leastTime;
int longestTime;
String name;

//some methods 

//a lot of get-set

@Override
public void run() {
    while (true) {
        if (this.postTransition() & this.preTransition()) {
            //We take out the tokens.
            this.executePreTranstion();
            this.checkPreTransition();


            try {
                this.sleep(1000 * this.getTimeToPass());
            } catch (InterruptedException ex) {
                Logger.getLogger(TransitionXML.class.getName()).log(Level.SEVERE, null, ex);
            }

            //We see if we can put them in.
            if (this.postTransition()) {
                this.executePostTranstion();
                this.checkPostTransition();
            }

        } else {
            try {
                this.sleep(2000);
            } catch (InterruptedException ex) {
                Logger.getLogger(TransitionXML.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }
}


}

public TransitionXML()
{

}

}

}

这会导致我遇到此错误:com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions java.lang.Thread$UncaughtExceptionHandler is an interface, and JAXB can't handle interfaces. ... java.lang.Thread$UncaughtExceptionHandler does not have a no-arg default constructor.

Which leads me to this error: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions java.lang.Thread$UncaughtExceptionHandler is an interface, and JAXB can't handle interfaces. ... java.lang.Thread$UncaughtExceptionHandler does not have a no-arg default constructor.

如果我正确地理解了这一点，那就是它扩展了Thread的事实会导致此问题，但是我还没有在网上看到解决方案.

If I understood this correctly the very fact that it extends Thread causes this problem but I haven't seen a solution on the net.

除了使类成为可运行的对象之外，有人知道解决方案或解决方法吗?

Does anyone know of a solution or work-around for this, besides making the class a object which implements runnable?

推荐答案

注意:我是 JAXB(JSR-222) 专家组.

Note: I'm the EclipseLink JAXB (MOXy) lead and a member of the JAXB (JSR-222) expert group.

如果将MOXy用作JAXB提供程序，则可以直接使用TransitionXML类.这是因为MOXy不会尝试为java或javax包(例如java.lang.Thread)中的类创建元数据.

If you use MOXy as your JAXB provider then you can use your TransitionXML class as is. This is because MOXy will not attempt to create metadata for classes in a java or javax package such as java.lang.Thread.

您可以从以下位置获取MOXy二进制文件:

You can obtain the MOXy binary from the following location:

• http://www.eclipse.org/eclipselink/downloads/

要将MOXy指定为JAXB提供程序，您需要将一个名为jaxb.properties的文件放在与域类相同的包中，并带有以下条目(请参阅:

To specify MOXy as your JAXB provider you need to put a file called jaxb.properties in the same package as your domain classes with the following entry (see: http://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as-your.html).

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory

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