java - 使用 .bin 保存/加载 HashMap

Question

public Map<String, BarrackData> barrack = new HashMap<String, BarrackData>();
SavingData.save(barrack, "barrack.bin"); // save
barrack = (Map<String, BarrackData>)SavingData.load("barrack.bin"); // load
// BarrackData contains 3 int's and 1 String.

public static void save(Object obj, String path) throws Exception {
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(path));
    oos.writeObject(obj);
    oos.flush();
    oos.close();
}

public static Object load(String path) throws Exception {
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(path));
    Object result = ois.readObject();
    ois.close();
    return result;
}

如何保存/加载 HashMap。
我用的这个方法，但是好像有问题。
barrack.bin 包含一些我无法弄清楚的错误。
(java.io.NotSerializedException java.io.ObjectStreamException IOException 抑制异常)

Answer 1

您的类BarrackData似乎未实现java.io.Serialized。它应该看起来像这样:

public class BarrackData implements Serializable {
   ...