java序列化与ObjectOutputStream和ObjectInputStream

最新推荐文章于 2025-05-13 18:52:36 发布

赫家旺

最新推荐文章于 2025-05-13 18:52:36 发布

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分类专栏： JavaSE 文章标签：序列化 ObjectInputStream ObjectOutputStream

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本文介绍了一个简单的Java实体类Param，并演示了如何使用Java内置的序列化接口将该实体类实例序列化到本地文件以及如何从本地文件中反序列化出原始对象。

一个测试的实体类：

public class Param implements Serializable {

	private static final long serialVersionUID = 5187074869820982336L;
	
	
	private Integer param1;
	private String param2;

	public Integer getParam1() {
		return param1;
	}

	public void setParam1(Integer param1) {
		this.param1 = param1;
	}

	public String getParam2() {
		return param2;
	}

	public void setParam2(String param2) {
		this.param2 = param2;
	}

}

测试：

public class Main {

	public static void main(String[] args) throws Exception {
		SerializeParam();
		
		Param param = DeserializeParam();
		System.out.println(MessageFormat.format("param1={0},param2={1}", param.getParam1(), param.getParam2()));
	}

	/**
	 * 将实体类序列化到本地
	 * @throws FileNotFoundException
	 * @throws IOException
	 */
	private static void SerializeParam() throws FileNotFoundException, IOException {
		Param param = new Param();
		param.setParam1(123);
		param.setParam2("asdf");
		
		ObjectOutputStream oo = new ObjectOutputStream(new FileOutputStream( new File("E:/param.txt") ));
		oo.writeObject(param);
		System.out.println("Person对象序列化成功！");
		oo.close();
	}
	
	/**
	 * 反序列化
	 * @return
	 * @throws Exception
	 * @throws IOException
	 */
	private static Param DeserializeParam() throws Exception, IOException {
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream( new File("E:/param.txt")));
        Param param = (Param) ois.readObject();
        System.out.println("Person对象反序列化成功！");
        ois.close();
        return param;
    }

}