java - 无法将 INetAddress 编码为 xml

Question

我正在尝试使用 java.beans.XMLEncoder 类将具有 INetAddress 类型成员的对象编码为 xml。不幸的是，我得到以下异常:

java.lang.IllegalAccessException: Class sun.reflect.misc.Trampoline can not access a member of class java.net.Inet4Address with modifiers ""

这是我的代码:

public class INetAddressFoo {

   private InetAddress addr;

   public INetAddressFoo() {
   }

   public InetAddress getAddr() {
      return addr;
   }

   public void setAddr(InetAddress addr) {
     this.addr = addr;
   }
}

---

public class Test{

    public static void main() throws Exception  {
        INetAddressFoo foo = new INetAddressFoo();
        InetAddress addr = InetAddress.getByName("localhost");
        foo.setAddr(addr);
        File file = new File("inet.xml");

        XMLEncoder encoder = null;

       try {
          encoder = new XMLEncoder(new BufferedOutputStream(new FileOutputStream(file)));
          encoder.writeObject(t);
       } finally {
          if (encoder != null) {
             encoder.close();
          }
       }
    }

}

Answer 1

javadoc for XmlEncoder说:

The XMLEncoder class is a complementary alternative to the ObjectOutputStream and can used to generate a textual representation of a JavaBean [...]

(他们的重点)

Inet4Address 不是 JavaBean，因此不适合以这种方式进行序列化。

您必须使用不同的机制来实现您想要做的事情。 JAXB 框架，included as part of java6 and above , 是一个更健壮和通用的 XML 序列化框架。