Android 无法反序列化对象 - 预期为 BEGIN_OBJECT，但在第 1 行第 1 列处为 STRING
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Cant deserialize object - Expected BEGIN_OBJECT but was STRING at line 1 column 1
提问by Yosi199
First let me say, I have searched before posting, just cant find the answer.
先说一下，我发帖之前搜索过，就是找不到答案。
I'm having trouble de-serializing a JSON. It is a valid JSON (checked at http://jsonlint.com/) and it was produced with servicestack json serializer.
我在反序列化 JSON 时遇到问题。它是一个有效的 JSON（在http://jsonlint.com/ 上检查）并且它是用 servicestack json 序列化程序生成的。
I'm getting
我越来越
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1
Here is my JSON sent by the server:
这是服务器发送的我的 JSON：
{
"artistName": "",
"pathInfo": "C:\Users\Unknown\Desktop\Audio Sketches\Chill.mp3",
"indexPos": 0,
"messageType": "song"
}
How it being received:
接收方式：
{"artistName":"","pathInfo":"C:\Users\Unknown\Desktop\Audio Sketches\Chill.mp3","indexPos":0,"messageType":"song"}
Here is the object to hold it:
这是持有它的对象：
public class Song {
private String artistName;
private String albumName;
private String titleName;
private String pathInfo;
private String indexPos;
private String messageType;
public Song() {
}
采纳答案by Yosi199
Okay I end up finding the answer myself but thanks to all that supported and helped.
好的，我最终自己找到了答案，但感谢所有支持和帮助的人。
This is the code that received the JSON object and initiate the Deserialization using GSON.
这是接收 JSON 对象并使用 GSON 启动反序列化的代码。
Map messageObjMap = new Gson().fromJson(message, Map.class);
String type = messageObjMap.get("messageType").toString();
switch (type) {
case "song":
try {
Gson gson = new GsonBuilder().create();
Song song = gson.fromJson(message, Song.class);
...
...
} ...
...
}
"message" was suppose to be the entire JSON. Instead it was a only a key parsed from the JSON and this is why the deserializtion didn't work. Hope that will help someone
“消息”应该是整个 JSON。相反，它只是从 JSON 解析出的一个键，这就是反序列化不起作用的原因。希望这会帮助某人
回答by Shereef Marzouk
String json = "{\"artistName\":\"\",\"pathInfo\":\"C:\Users\Unknown\Desktop\Audio Sketches\Chill.mp3\",\"indexPos\":0,\"messageType\":\"song\"}";
final JSONObject jsonObject = new JSONObject(json);
String path = jsonObject.getString("pathInfo");
I haven't used Gson but try this and let me know if it works
我没有用过 Gson，但试试这个，让我知道它是否有效
