Java XMLEncoder.writeObject方法代码示例

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public @Override void write(java.io.Writer w, final Object inst) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    XMLEncoder e = new XMLEncoder(out);
    e.setExceptionListener(new ExceptionListener() {
        public @Override void exceptionThrown(Exception x) {
            Logger.getLogger(XMLBeanConvertor.class.getName()).log(Level.INFO, "Problem writing " + inst, x);
        }
    });
    ClassLoader ccl = Thread.currentThread().getContextClassLoader();
    try {
        // XXX would inst.getClass().getClassLoader() be more appropriate?
        ClassLoader ccl2 = Lookup.getDefault().lookup(ClassLoader.class);
        if (ccl2 != null) {
            Thread.currentThread().setContextClassLoader(ccl2);
        }
        e.writeObject(inst);
    } finally {
        Thread.currentThread().setContextClassLoader(ccl);
    }
    e.close();
    String data = new String(out.toByteArray(), "UTF-8");
    data = data.replaceFirst("<java", "<!DOCTYPE xmlbeans PUBLIC \"-//NetBeans//DTD XML beans 1.0//EN\" \"http://www.netbeans.org/dtds/xml-beans-1_0.dtd\">\n<java");
    w.write(data);
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/** 
 * 把java的可序列化的对象(实现Serializable接口)序列化保存到XML文件里面,如果想一次保存多个可序列化对象请用集合进行封装 
 * 保存时将会用现在的对象原来的XML文件内容 
 * @param obj 要序列化的可序列化的对象 
 * @param fileName 带完全的保存路径的文件名  
 * @throws FileNotFoundException 指定位置的文件不存在 
 * @throws IOException 输出时发生异常 
 * @throws Exception 其他运行时异常 
 */ 
public static void objectXmlEncoder(Object obj,String fileName) 
 throws FileNotFoundException,IOException,Exception 
{   
 //创建输出文件 
 File fo = new File(fileName); 
 //文件不存在,就创建该文件 
 if(!fo.exists()) 
 { 
  //先创建文件的目录 
     String path = fileName.substring(0,fileName.lastIndexOf('.')); 
     File pFile = new File(path); 
     pFile.mkdirs();          
 } 
 //创建文件输出流 
 FileOutputStream fos = new FileOutputStream(fo); 
 //创建XML文件对象输出类实例 
 XMLEncoder encoder = new XMLEncoder(fos);   
 //对象序列化输出到XML文件 
 encoder.writeObject(obj); 
 encoder.flush();  
 //关闭序列化工具 
 encoder.close(); 
 //关闭输出流 
 fos.close();     
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public static void saveAnObjectXML(Object obj, String path) {
    try {
        // Serialize object into XML
        XMLEncoder encoder = new XMLEncoder(new BufferedOutputStream(
                new FileOutputStream(path)));
        encoder.writeObject(obj);
        encoder.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public void run() {
    // run thread a few time
    // object stays the same but NullPointerException appears randomly
    // on dual proccessor a lock is generated
    for (int i = 0; i < THREAD_LENGTH; i++) {
        // create XMLEncoder to ByteArrayOutputStream
        // this is to exclude file locking problems
        XMLEncoder encoder = new XMLEncoder(new ByteArrayOutputStream());
        encoder.setExceptionListener(this);
        // write the object
        // will see randomly null pointer exceptions
        // a bug as object is same through different encode phases
        encoder.writeObject(this.object);
        //close encoder
        encoder.close();
    }
    System.out.println(Thread.currentThread().getName() + " is finished");
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
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);
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/**
	 * This code abstracted because it relies on java.beans.* which is not always available
	 * e.g. on Android
	 */

@Override
public void
doSave(
	OutputStream 	out,
	Map				usersMap )
{
	UserManagerConfig config = new UserManagerConfig();
	List users = new ArrayList( usersMap.values() );
	config.setUsers(users);

	XMLEncoder encoder = new XMLEncoder( new BufferedOutputStream( out ) );
	encoder.writeObject(config);
	encoder.close();
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public static byte[] objectToXml(Object obj,ClassLoader cl){
    if(cl == null){ return objectToXml(obj); }
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    XMLEncoder xml = new XMLEncoder(bos);
    //HACK
    ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
    if (cl != oldLoader && cl != null){
        try{
            Thread.currentThread().setContextClassLoader(cl);
            xml.writeObject(obj);
        }catch(Exception e){e.printStackTrace();}
        finally {
            Thread.currentThread().setContextClassLoader(oldLoader);
        }
    }else{
        xml.writeObject(obj);
    }

    xml.close();
    return bos.toByteArray();
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/**
 * To xml.
 *
 * @param obj
 *            the obj
 * @return the string
 */
// ////////////////////////////////////////////////////////////////////
public static String toXml(final Object obj) {
	final ByteArrayOutputStream out = new ByteArrayOutputStream();

	// XStream x = createXStream();
	// String xml = x.toXML(obj);
	// return xml;
	final XMLEncoder e = new XMLEncoder(out);
	e.setExceptionListener(new XmlEncoderExceptionListener());
	// e.setPersistenceDelegate(Object.class, new MyPersistenceDelegate());
	e.writeObject(obj);
	e.close();
	return out.toString();
	// return null;
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
private void saveWorkspaceToFile(File file) {

		try {
			FileOutputStream fos = new FileOutputStream(file);
			XMLEncoder encoder = new XMLEncoder(fos);
			encoder.writeObject(config);
			encoder.close();
			recentMenu.addRecentWorkspace(file);
		} catch (FileNotFoundException e) {
			GUIHelper.showMessage(this, "An error occured while saving to "
					+ file.getPath(), JOptionPane.ERROR_MESSAGE);
		}
		GUIHelper.showMessage(this, "Workspace saved to " + file.getPath(),
				JOptionPane.INFORMATION_MESSAGE);
		actionSaveWorkspaceAs.setEnabled(true);
	}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public void writeToDisk() throws IOException {
	if (_purged)
		return;
	XMLEncoder out = null;
	try {
		out = _um.getXMLEncoder(new SafeFileOutputStream(_um
				.getUserFile(getName())));
		ClassLoader prevCL = Thread.currentThread().getContextClassLoader();
		Thread.currentThread().setContextClassLoader(CommonPluginUtils.getClassLoaderForObject(this));
		out.writeObject(this);
		Thread.currentThread().setContextClassLoader(prevCL);
		logger.debug("Wrote userfile for " + this.getName());
	} finally {
		if (out != null)
			out.close();
	}
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/**
 * Saves segmentation rules into specified file.
 */
public static void saveTo(SRX srx, File outFile) throws IOException {
    if (srx == null) {
        if (!outFile.delete()) {
            throw new RuntimeException();
        }
        return;
    }
    try {
        srx.setVersion(CURRENT_VERSION);
        XMLEncoder xmlenc = new XMLEncoder(new FileOutputStream(outFile));
        xmlenc.writeObject(srx);
        xmlenc.close();
    } catch (IOException ioe) {
        LOG.warn("IO Error", ioe);
        throw ioe;
    }
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public static boolean serializeObject(File file, Object o) {
	if (file.exists()) {
		System.out
				.println("Warning! Object Already Exists \n Replacing File.");
	}
	try {
		FileOutputStream os = new FileOutputStream(file);
		XMLEncoder encoder = new XMLEncoder(os);
		encoder.writeObject(o);
		encoder.close();
	} catch (Exception f) {
		System.out.println("Warning! Write was Unsuccessful");
		return false;
	}
	return true;
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/**
 * 将Object序列化到XML文件
 * @param obj 目标对象
 * @param fileName 完整路径的文件名
 * @throws IOException
 */
public static void objectXmlEncoder(Object obj , String fileName) throws IOException{
	 File fo = new File(fileName);
	 //文件不存在,就创建该文件
	 if(!fo.exists()){
		 String path = fileName.substring(0,fileName.lastIndexOf('.'));
		 File pFile = new File(path);
		 pFile.mkdirs();
	 }
	 FileOutputStream fos = new FileOutputStream(fo);
	 //创建XML文件对象输出类实例
	 XMLEncoder encoder = new XMLEncoder(fos);
	 //对象序列化输出到XML文件
	 encoder.writeObject(obj);
	 encoder.flush();
	 encoder.close();
	 fos.close();
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
public void save() {
	try {
		Engine.logEngine.debug("(Scheduler Manager) Start jobs saving ...");
		XMLEncoder encoder = new XMLEncoder(new FileOutputStream(getFileURL()));
		encoder.writeObject(schedulerXML);
		encoder.close();
		Engine.logEngine.debug("(Scheduler Manager) ... jobs saving finished !");
	} catch (FileNotFoundException e) {
		Engine.logEngine.error("(Scheduler Manager) ... jobs saving failed !", e);
	}
}
 

import java.beans.XMLEncoder; //导入方法依赖的package包/类
/**
 * Saves all templates as XML files in the current template directory.
 *
 * @return Whether or not the save was successful.
 */
public synchronized boolean saveTemplates() {

	if (templates==null) {
		return true;
	}
	if (directory==null || !directory.isDirectory()) {
		return false;
	}

	// Blow away all old XML files to start anew, as some might be from
	// templates we're removed from the template manager.
	File[] oldXMLFiles = directory.listFiles(new XMLFileFilter());
	if (oldXMLFiles==null) {
		return false; // Either an IOException or it isn't a directory.
	}
	int count = oldXMLFiles.length;
	for (int i=0; i<count; i++) {
		/*boolean deleted = */oldXMLFiles[i].delete();
	}

	// Save all current templates as XML.
	boolean wasSuccessful = true;
	for (CodeTemplate template : templates) {
		File xmlFile = new File(directory, template.getID() + ".xml");
		try {
			XMLEncoder e = new XMLEncoder(new BufferedOutputStream(
									new FileOutputStream(xmlFile)));
			e.writeObject(template);
			e.close();
		} catch (IOException ioe) {
			ioe.printStackTrace();
			wasSuccessful = false;
		}
	}

	return wasSuccessful;

}