java开发中序列化与反序列化起到的作用

标签：java序列化与反序列化   序列化用途   反序列化用途   

这是对一个对象进行序列化和反序列化的过程：

public static byte[] serializeObj(Object object){
		if (object == null) {
			throw new NullPointerException("Can't serialize null");
		}
		byte[] rv = null;
		ByteArrayOutputStream bos = null;
		ObjectOutputStream os = null;
		try {
			bos = new ByteArrayOutputStream();
			os = new ObjectOutputStream(bos);
			os.writeObject(object);
			os.writeObject(null);
			os.close();
			bos.close();
			rv = bos.toByteArray();
		} catch (IOException e) {
			throw new IllegalArgumentException("Non-serializable object", e);
		} finally {
			try {
				if (os != null) {
					os.flush();
					os.close();
				}
				if (bos != null) {
					bos.flush();
					bos.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return rv;
	}
	
	@SuppressWarnings("unchecked")
	public static <T>T deserializeObj(byte[] in,Class<T> clazz) {
		ByteArrayInputStream bis = null;
		ObjectInputStream is = null;
		try {
			if (in != null) {
				bis = new ByteArrayInputStream(in);
				is = new ObjectInputStream(bis);
				while (true) {
					T o = (T) is.readObject();
					if (o == null) {
						break;
					} else {
						return o;
					}
				}

			}
		} catch (IOException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} finally {
			try {
				if (is != null) {
					is.close();
				}
				if (bis != null) {
					bis.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return null;
	}

public static <T>byte[] serializeList(List<T> value ,Class<T> clazz) {
		if (value == null) {
			throw new NullPointerException("Can't serialize null");
		}
		byte[] rv = null;
		ByteArrayOutputStream bos = null;
		ObjectOutputStream os = null;
		try {
			bos = new ByteArrayOutputStream();
			os = new ObjectOutputStream(bos);
			for (T t : value) {
				os.writeObject(t);
			}
			os.writeObject(null);
			os.close();
			bos.close();
			rv = bos.toByteArray();
		} catch (IOException e) {
			throw new IllegalArgumentException("Non-serializable object", e);
		} finally {
			try {
				if (os != null) {
					os.flush();
					os.close();
				}
				if (bos != null) {
					bos.flush();
					bos.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return rv;
	}

	@SuppressWarnings("unchecked")
	public static <T> List<T> deserializeList(byte[] in,Class<T> clazz) {
		List<T> list = new ArrayList<T>();
		ByteArrayInputStream bis = null;
		ObjectInputStream is = null;
		try {
			if (in != null) {
				bis = new ByteArrayInputStream(in);
				is = new ObjectInputStream(bis);
				while (true) {
					T o = (T) is.readObject();
					if (o == null) {
						break;
					} else {
						list.add(o);
					}
				}

			}
		} catch (IOException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} finally {
			try {
				if (is != null) {
					is.close();
				}
				if (bis != null) {
					bis.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

java开发中序列化与反序列化起到的作用

标签：java序列化与反序列化   序列化用途   反序列化用途   

原文地址：http://blog.csdn.net/u012516914/article/details/41009403