java.beans.XMLDecoder# readObject ( ) 源码实例Demo

static void test(AbstractTest object) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    XMLEncoder encoder = new XMLEncoder(output);
    encoder.setPersistenceDelegate(
            object.getClass(),
            new DefaultPersistenceDelegate(new String[] {"value"}));

    encoder.writeObject(object);
    encoder.close();

    System.out.print(output);

    ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray());
    XMLDecoder decoder = new XMLDecoder(input);
    AbstractTest result = (AbstractTest) decoder.readObject();
    decoder.close();

    if (object.getValue() != result.getValue())
        throw new Error("Should be " + object);
}
 

private WebServiceDescriptor loadDescriptorFile(String descriptorPath) {
    if (descriptorPath == null || descriptorPath.length() == 0) {
        return null;
    } else {
        XMLDecoder decoder = null;
        try {
            decoder = new java.beans.XMLDecoder(new java.io.BufferedInputStream(new java.io.FileInputStream(descriptorPath)));
            return (WebServiceDescriptor) decoder.readObject();
        } catch (Exception ex) {
            exceptionThrown(ex);
            return null;
        } finally {
            if (decoder != null) {
                decoder.close();
            }
        }
    }

}
 

static void test(AbstractTest object) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    XMLEncoder encoder = new XMLEncoder(output);
    encoder.setPersistenceDelegate(
            object.getClass(),
            new DefaultPersistenceDelegate(new String[] {"value"}));

    encoder.writeObject(object);
    encoder.close();

    System.out.print(output);

    ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray());
    XMLDecoder decoder = new XMLDecoder(input);
    AbstractTest result = (AbstractTest) decoder.readObject();
    decoder.close();

    if (object.getValue() != result.getValue())
        throw new Error("Should be " + object);
}
 

@Override
protected void validate(XMLDecoder decoder) {
    JPanel panel = (JPanel) decoder.readObject();
    if (2 != panel.getComponents().length) {
        throw new Error("unexpected component count");
    }
    JButton button = (JButton) panel.getComponents()[0];
    if (!button.getText().equals("button")) { // NON-NLS: hardcoded in XML
        throw new Error("unexpected button text");
    }
    if (SwingConstants.CENTER != button.getVerticalAlignment()) {
        throw new Error("unexpected vertical alignment");
    }
    JLabel label = (JLabel) panel.getComponents()[1];
    if (!label.getText().equals("label")) { // NON-NLS: hardcoded in XML
        throw new Error("unexpected label text");
    }
    if (button != label.getLabelFor()) {
        throw new Error("unexpected component");
    }
}
 

/**
 * This is entry point to start testing.
 *
 * @param security  use {@code true} to start
 *                  second pass in secure context
 */
final void test(boolean security) {
    byte[] array = getFieldValue("XML").getBytes(); // NON-NLS: the field name
    ByteArrayInputStream input = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(input);
    decoder.setExceptionListener(this);
    validate(decoder);
    try {
        throw new Error("unexpected object" + decoder.readObject());
    } catch (ArrayIndexOutOfBoundsException exception) {
        // expected exception
    }
    decoder.close();
    if (security) {
        System.setSecurityManager(new SecurityManager());
        test(false);
    }
}
 

@Override
protected void validate(XMLDecoder decoder) {
    JPanel panel = (JPanel) decoder.readObject();
    if (2 != panel.getComponents().length) {
        throw new Error("unexpected component count");
    }
    JButton button = (JButton) panel.getComponents()[0];
    if (!button.getText().equals("button")) { // NON-NLS: hardcoded in XML
        throw new Error("unexpected button text");
    }
    if (SwingConstants.CENTER != button.getVerticalAlignment()) {
        throw new Error("unexpected vertical alignment");
    }
    JLabel label = (JLabel) panel.getComponents()[1];
    if (!label.getText().equals("label")) { // NON-NLS: hardcoded in XML
        throw new Error("unexpected label text");
    }
    if (button != label.getLabelFor()) {
        throw new Error("unexpected component");
    }
}
 

private Object decode(byte[] array) {
    ByteArrayInputStream in = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(in, null, this, this);
    Object object = decoder.readObject();
    validate(object);
    decoder.close();
    return object;
}
 

private Object readObject(byte[] array) {
    ByteArrayInputStream input = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(input);
    decoder.setExceptionListener(this);
    initialize(decoder);
    Object object = decoder.readObject();
    decoder.close();
    return object;
}
 

private Object decode(byte[] array) {
    ByteArrayInputStream in = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(in, null, this, this);
    Object object = decoder.readObject();
    validate(object);
    decoder.close();
    return object;
}
 

@Override
protected void validate(XMLDecoder decoder) {
    decoder.setOwner(this);
    if (this != decoder.readObject()) {
        throw new Error("owner should be the same");
    }
    if (this.message == null) {
        throw new Error("owner's method is not called");
    }
}
 

@Override
protected void validate(XMLDecoder decoder) {
    decoder.setOwner(this);
    if (this != decoder.readObject()) {
        throw new Error("owner should be the same");
    }
    if (this.message == null) {
        throw new Error("owner's method is not called");
    }
}
 

private Object readObject(byte[] array) {
    ByteArrayInputStream input = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(input);
    decoder.setExceptionListener(this);
    initialize(decoder);
    Object object = decoder.readObject();
    decoder.close();
    return object;
}
 

@Override
protected void validate(XMLDecoder decoder) {
    for (int i = 0; i < 3; i++) {
        if (decoder != decoder.readObject()) {
            throw new Error("decoder instance expected");
        }
    }
}
 

private Object decode(byte[] array) {
    ByteArrayInputStream in = new ByteArrayInputStream(array);
    XMLDecoder decoder = new XMLDecoder(in, null, this, this);
    Object object = decoder.readObject();
    validate(object);
    decoder.close();
    return object;
}
 

@Override
protected void validate(XMLDecoder decoder) {
    decoder.setOwner(this);
    if (this != decoder.readObject()) {
        throw new Error("owner should be the same");
    }
    if (this.message == null) {
        throw new Error("owner's method is not called");
    }
}
 

@Override
protected void validate(XMLDecoder decoder) {
    for (int i = 0; i < 3; i++) {
        if (decoder != decoder.readObject()) {
            throw new Error("decoder instance expected");
        }
    }
}
 

@Override
protected void validate(XMLDecoder decoder) {
    if (null != decoder.readObject()) {
        throw new Error("null value expected");
    }
}
 

@Override
protected void validate(XMLDecoder decoder) {
    if (null != decoder.readObject()) {
        throw new Error("null value expected");
    }
}
 

@Override
public <U> U unmarshal(String string, Class<U> beanClass) throws Exception {
	XMLDecoder decoder = new XMLDecoder(new ByteArrayInputStream(string.getBytes("UTF-8")));
	return (U)decoder.readObject();
}
 

private void parse() {
    XMLDecoder decoder = new XMLDecoder(new ByteArrayInputStream(this.buffer));
    decoder.readObject();
    decoder.close();
}