Question

我使用gson库来解析json响应。它运作良好。现在我遇到了问题。

我收到了来自webservice的回复。 json键值不是静态的，它会动态变化。

如何编写解析器类来解析下面的响应。

格式化JSON ：

{
    "meta": {
        "code": 201,
        "dataPropertyName": "activity",
        "currentTime": "2014-02-05 06:15:04",
        "listedCount": "2"
    },
    "activity": [
        {
            "comments": [
                {
                    "raja": {
                        "type": "Liked",
                        "userPhoto": "663.png",
                        "userId": "74",
                        "userName": {
                            "1_0": "longjump"
                        },
                        "postOwner": "you",
                        "postDetails": {
                            "471": {
                                "postImage": "972.png",
                                "postId": "471",
                                "postType": "1"
                            }
                        },
                        "dateTime": "2014-02-05 05:24:56",
                        "sameOwner": "1"
                    }
                }
            ]
        },
        {
            "follow": [
                {
                    "you": {
                        "type": "follow",
                        "followByUserName": {
                            "0_0": "olivepop",
                            "1_0": "yadidroy",
                            "2_0": "chitra"
                        },
                        "followUserName": "you",
                        "followByUserPhoto": "242.png",
                        "followUserPhoto": "953.png",
                        "dateTime": "2014-01-09 06:50:42"
                    }
                }
            ]
        }
    ],
    "notifications": [
        "Activities has been retrieved successfully"
    ]
}

Answer 1

使用此解析器类

Meta meta = new Meta();

    ArrayList<Activity> activity = new ArrayList<ActivityParser.Activity>();

    ArrayList<String> notifications = new ArrayList<String>();

    public class Meta
    {
        String code,dataPropertyName,currentTime,listedCount;
    }

    public class Activity
    {
        ArrayList<HashMap<String, CommentsItem>> comments = new ArrayList<HashMap<String,CommentsItem>>();

        public class CommentsItem
        {
            String type,userPhoto,userId,postOwner,dateTime,sameOwner;
            HashMap<String, String> userName = new HashMap<String,String>();
            HashMap<String, PostDetails> postDetails = new HashMap<String,PostDetails>();
            public class PostDetails
            {
                String postImage,postId,postType;
            }

        }

        ArrayList<HashMap<String, FollowItem>> follow = new ArrayList<HashMap<String,FollowItem>>();

        public class FollowItem
        {
            String type,followUserName,followByUserPhoto,followUserPhoto,dateTime;
            HashMap<String, String> followByUserName = new HashMap<String,String>();
        }
    }

Answer 2

根据您的规范，您可以创建一个默认Web服务响应model.java，如下所示：

String success;
@SerializedName("error_msg")
String errorMessage;
@SerializedName("error_code")
String errorCode;
JsonObject data;

其中具有动态键的对象的父级将是“数据” 使用Gson，映射模型类：

webserviceResponse= gson.fromJson(contentResponse,WebserviceResponse.class);
if (StringUtils.isNotEmpty(webserviceResponse.getSuccess()) && 
StringUtils.equalsIgnoreCase(webserviceResponse.getSuccess(), "success")) {
//check for the dynamic key name
                JsonObject job = webserviceResponse.getData();
                dynamicallyDefinedKeyClass= gson.fromJson(job.get("dynamicKeyValue"), DynamicallyDefinedKeyClass.class);
            }

如果可以帮助，将以任何方式编辑我的问题编辑答案只是一个建议 - 拉贾，你等可以是一个关键名称或评论的价值观？你从哪里得到这个回复？

Answer 3

如果可能的话，获取具有所有可能的“Key”值的JSON响应，然后从下面的链接获取POJO类自动构建：

POJO FOR GSON

它将自动处理所有可能性。但请确保您在生成POJO时提供的RESPONCE应保留您的Key的所有可能组合[更改一次]。

希望这有助于!!

Gson解析器类为动态json键值 - Android

3 个答案: