[英]GSON-JSON Deserialize Object in Class
I've a little problem with GSON-JSON. 我对GSON-JSON有点问题。
Let see the following code: 让我们看下面的代码:
public static class ProtoQuery {
public String action;
public String token;
public Object params;
public ProtoQuery(String action, String token, Object params) {
this.action = action;
this.token = token;
this.params = params;
}
}
// Authentication Phase
public static class ProtoAuth {
public String username;
public String password;
public ProtoAuth(String username, String password) {
this.username = username;
this.password = password;
}
}
// Serialize Object
Gson gson = new Gson();
ProtoQuery tmp = new ProtoQuery("ProtoAuth", "", new JirckeProtocol.ProtoAuth("ABC", "myPASS"));
String json = gson.toJson(tmp);
// Deserialize Object
ProtoQuery deserializedOBJ = gson.fromJson(json, ProtoQuery.class);
Here the problem: deserializedOBJ.object return a LinkedHashMap. 这里的问题是:deserializedOBJ.object返回一个LinkedHashMap。 I want to convert back into ProtoAuth object..How I can know that is a ProtoAuth? 我想转换回ProtoAuth对象。如何得知这是ProtoAuth? Using the "action" params in ProtoQuery. 在ProtoQuery中使用“操作”参数。
I need something like deserializedOBJ.params = gson.fromJSON(json.object, ProtoAuth.class) 我需要类似deserializedOBJ.params = gson.fromJSON(json.object,ProtoAuth.class)的东西
What's the best way to do this? 最好的方法是什么? There is an alternative to do this, without write my own serializer/deserialer? 还有另一种方法,而无需编写我自己的序列化器/解串器?
Actually I use that code: 实际上,我使用该代码:
deserializedOBJ.params = gson.fromJson(element, Class.forName("MyProtocol$ProtoAuth"));
I would type ProtoQuery as following: 我将输入ProtoQuery如下:
public static class ProtoQuery<T> {
public String action;
public String token;
public T params;
public ProtoQuery(String action, String token, T params) {
this.action = action;
this.token = token;
this.params = params;
}
}
// Authentication Phase
public static class ProtoAuth {
public String username;
public String password;
public ProtoAuth(String username, String password) {
this.username = username;
this.password = password;
}
}
and to deserialize with a param of type ProtoAuth, you can call as followed: 并使用ProtoAuth类型的参数反序列化,可以调用如下:
Type type = new TypeToken<ProtoQuery<ProtoAuth>>() {}.getType();
ProtoQuery<ProtoAuth> deserializedOBJ = gson.fromJson(json, type);
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