序列化java.awt.geom.Area

Question

我需要在套接字中序列化一个Area对象（java.awt.geom.Area）。但它似乎不是可序列化的。有没有办法做这样的事情？也许通过将其转换为不同的对象？

提前致谢

Answer 1

我发现了这个解决方法：

AffineTransform.getTranslateInstance(0,0).createTransformedShape(myArea)

这导致可以序列化的形状。

Answer 2

使用XStream将其简单地转换为XML或从XML转换。您不需要对象来实现特定接口，并且可以自定义序列化。

Answer 3

根据kieste的回答，可以推导出这种解决方法。

import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.io.IOException;
import java.io.Serializable;

public class SerialArea extends Area implements Serializable {
    private static final long serialVersionUID = -3627137348463415558L;

    /**
     * New Area
     */
    public SerialArea() {}

    /**
     * New Area From Shape
     */
    public SerialArea(Shape s) {
        super(s);
    }

    /**
     * Writes object out to out.
     * @param out Output
     * @throws IOException if I/O errors occur while writing to the
     *  underlying OutputStream
     */
    private void writeObject(java.io.ObjectOutputStream out)
            throws IOException {
        out.writeObject(AffineTransform.getTranslateInstance(0, 0).
            createTransformedShape(this));
    }
    /**
     * Reads object in from in.
     * @param in Input
     * @throws IOException if I/O errors occur while writing to the
     *  underlying OutputStream
     * @throws ClassNotFoundException if the class of a serialized object
     *  could not be found.
     */
    private void readObject(java.io.ObjectInputStream in)
            throws IOException, ClassNotFoundException {
        add(new Area((Shape) in.readObject()));
    }
}