序列化的读写磁盘细节很多。 上个最简单实例. 1.序列化的类要implements Serializable 2.不参与序列化的用transient 3. 接口用 extends 比如:public interface Strategy extends Serializable 知道以上3点基本够用了。
public class SerializeTest { private Assert Assertions; @Test public void testwrite() { try { T t = new T(); File f = new File("/Users/Desktop/java/ideaPrj/a.dat"); FileOutputStream fos = new FileOutputStream(f); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(t); oos.flush(); oos.close(); } catch (Exception e) { e.printStackTrace(); } } @Test public void testload() { try { File f = new File("/Users/Desktop/java/ideaPrj/a.dat"); FileInputStream fis = new FileInputStream(f); ObjectInputStream ois = new ObjectInputStream(fis); T t = (T) (ois.readObject()); System.out.println(t.m + " " + t.n); // Assertions.assertEquals(4,t.m); //Assertions.assertEquals(8,t.n); //Assertions.assertEquals(3,t.a.weight); ois.close(); } catch (Exception e) { e.printStackTrace(); } } } class T implements Serializable { int m = 4; int n=8; // transient int n = 8;//不参与序列化 // Apple a =new Apple(); } class Apple implements Serializable { int weight =3; } /* public interface Strategy extends Serializable */
