Question

java持久化对象到文件后怎么读取出来？

Answer 1

public static Object readObjectFromFile()
{
Object temp=null;
File file =new File("test.dat");
FileInputStream in;
try {
in = new FileInputStream(file);
ObjectInputStream objIn=new ObjectInputStream(in);
temp=objIn.readObject();
objIn.close();
System.out.println("read object success!");
} catch (IOException e) {
System.out.println("read object failed");
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return temp;
}

Answer 2

实现可序列化接口，就可以持久化到文件中。一般用于对象化传输的多些

Answer 3

使用 反过来读， java.io.ObjectInputStream 的 方法
Object
readObject()Read an object from the ObjectInputStream.