Java中如何实现对象的序列化与反序列化操作?

原创﹏ヽ暗。殇╰゛Y 2024-09-25 05:24 49阅读 0赞

在Java中，我们可以使用`java.io.Serializable`和`java.io serialization`来实现对象的序列化与反序列化操作。

1. **定义Serializable接口**：如果某个类需要被序列化，那么这个类必须实现`Serializable`接口。

```java
public class SerializableExample implements Serializable {
    //...
}
```

2. **进行序列化操作**：使用`ObjectOutputStream`将对象序列化为字节流。

```java
import java.io.*;

public class SerializeObject {
    public static void main(String[] args) {
        SerializableExample example = new SerializableExample();
        
        try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("SerializedExample.bin")))) {
            oos.writeObject(example);
            System.out.println("Object serialized successfully.");
        } catch (IOException e) {
            System.err.println("Error occurred during serialization: " + e.getMessage());
            e.printStackTrace();
        }
    }
}
```

3. **进行反序列化操作**：使用`ObjectInputStream`从字节流中读取对象。

```java
import java.io.*;

public class DeserializeObject {
    public static void main(String[] args) {
        // If serialized file exists, deserialize it
        if (new File("SerializedExample.bin")).exists()) {
            try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("SerializedExample.bin"))))) {
                SerializableExample example = (SerializableExample) ois.readObject();
                
                System.out.println("Deserialized object successfully: " + example);
            } catch (IOException | ClassNotFoundException e) {
                System.err.println("Error occurred during deserialization: " + e.getMessage());
                e.printStackTrace();
            }
        } else {
            System.out.println("Serialized file doesn't exist.");
        }
    }
}
```

这样，我们就成功地实现了Java对象的序列化与反序列化操作。