Question

我很难解析我从Web服务器获取的JSON响应。以下是我正在使用的相关代码：

获取JSON响应的方法：

void readResponse(String response)
{       
    Log.w("Rakshak", "In the in the new user: "+response); <-- log entry posted below
    Gson gson = new Gson();
    NewUserModel newUser = gson.fromJson(response, NewUserModel.class);

    Toast.makeText(this, newUser.firstName, Toast.LENGTH_SHORT).show(); <-- this dosent show
    Log.w("Rakshak", newUser.getFirstname());<-- no log entry here
    Log.w("Rakshak", newUser.firstName);    <-- no log entry here           

}

“readResponse”方法第一行的日志：

05-20 19:56:10.963: W/Rakshak(8519): In the in the new user: {"id":18,"username":"Rakshak","password":"[password]","firstName":"Rakshak","lastName":"Raghavan","created":"2014-05-20T14:26:10+0000","updated":null}

现在是NewUserModel类:(这是我认为问题所在的地方）

public class NewUserModel {

public String id;
public String created;




/*
 * All the set methods
 */

@Expose
@SerializedName("username")
public String username;
public void setUsername(String s) 
{
    this.username = s;
}

@Expose
@SerializedName("password")
public String password;
public void setPassword(String s) 
{
    this.password = s;
}

@Expose
@SerializedName("firstName")
public String firstName;
public void setFirstName(String s) 
{
    this.firstName = s;
}

@Expose
@SerializedName("lastName")
public String lastName;
public void setLastName(String s) 
{
    this.lastName = s;
}

/*
 * All the get methods
 */


public String getId() { return id; }

public String getUsername() { return username; }

public String getPassword() { return password; }

public String getFirstname() { return firstName; }

public String getLastname() { return lastName; }

public String getCreated() { return created; }



}

为什么我不能从JSON中获取东西？在NewUserModel newUser = gson.fromJson(response, NewUserModel.class);之后没有做任何事情的Toast和2 log。有人可以告诉我我做错了吗？

Answer 1

使用GSON Library时，我也遇到了这种错误。

你可以这样试试。

Type modelType = new TypeToken<NewUserModel>() {}.getType();
    NewUserModel newUser = gson.fromJson(response, modelType);

希望它有所帮助。

无法使用GSON lib解析JSON

1 个答案: