Error Parsing JSON String to JSONObject in Java

Question

I have an application that stores this JSON String :

String message ="{\"uid\":\"1\",\"streetName\":\"road\",\"city\":\"London\",\"speedLimit\":20}"

Now I want to parse it back to a JSON Object, In order to do so I have this line:

    JsonObject object = new JsonParser().parse(message).getAsJsonObject();

I am using Gson Library to parse it and use it as a JSON Object. However, I am getting this exception :

com.google.gson.stream.MalformedJsonException: Expected name at line 1 column 2 path $.

Update 1

I have tried this

String message = "{"uid":"1","streetName":"road","city":"London","speedLimit":20}";
JSONObject object = new JSONObject(message);

Now I get this exception:

Unterminated string at character 28 of {"uid":"1","streetName":"roa

I have tried lots of workarounds from multiple threads on StackOverflow but nothing is working and I have no idea why ?

Answer 1

您可以直接将其强制转换为JSONObject，

JSONObject response = new JSONObject();
String str =  "{\"uid\":\"1\",\"streetName\":\"road\",\"city\":\"London\",\"speedLimit\":20}";
response = new JSONObject(str);

现在字符串响应已经作为Json响应生成。

Answer 2

您的代码很好，应该可以使用

请检查java文件中JsonParser的导入（应该是com.google.gson.JsonParser）

如果JsonParser不是问题，请告知Gson版本

Answer 3

您的代码应该可以运行，可能需要检查之前提到的依赖项。

我正在使用此依赖关系https://mvnrepository.com/artifact/com.google.code.gson/gson/2.8.0

这是一个工作https://github.com/SalehAly/test-gson

的sscce

Answer 4

我发现了我的问题。

我正在处理的字符串格式错误。修复字符串就是这里的答案。我如何解析字符串没有错。

感谢所有答案和帮助。