Question

在我的应用程序中，我得到一个我想要转换为JSON的字符串要做到这一点，我使用以下内容：

    JsonParser gsonTest = new JsonParser();
    JsonObject toto= new 
    JsonParser().parse(response).getAsJsonObject();
    testhash = toto.get("access_token").getAsString();

但是我收到以下错误：

 java.lang.IllegalStateException: Not a JSON Object: 
    {
        "access_token": "NmUxMjdjYjllZWNhZDBhNjNhMGJmYzE0YWE1YjIzOTM2ODkwMGI3ZmMyZDRmNDJhMGRkNGNiM2U4N2FkZTk4Yg",
        "expires_in": 3600,
        "token_type": "bearer",
        "scope": null,
        "refresh_token": "MDZkYWFlOGEwN2M0MGE1MDFmZmRhYmVlOGE0NTllMWY0NTBlY2VhZmJhYTJlM2RkM2NkNjhlZjk3M2E5ZDQxMQ",
        "user": {
            "id": 3,
            "serverPath": "/Applications/MAMP/htdocs/SupDocAPI/Storage",
            "username": "toto",
            "defaultFolder": 2,
            "email": "toto@gmail.com"
        }
    }

Answer 1

响应不是正确的JSON格式。就像这个{"access_token":"NmUxMjdjYjllZWNhZDBhNjNh"}。删除反斜杠＆＃34; \＆＃34;来自JSON回复。

Answer 2

JSON字符串有效，但JSON数据不准确，您必须删除所有escape char back slash "\"才能获得真实数据：

{
    "access_token": "NmUxMjdjYjllZWNhZDBhNjNhMGJmYzE0YWE1YjIzOTM2ODkwMGI3ZmMyZDRmNDJhMGRkNGNiM2U4N2FkZTk4Yg",
    "expires_in": 3600,
    "token_type": "bearer",
    "scope": null,
    "refresh_token": "MDZkYWFlOGEwN2M0MGE1MDFmZmRhYmVlOGE0NTllMWY0NTBlY2VhZmJhYTJlM2RkM2NkNjhlZjk3M2E5ZDQxMQ",
    "user": {
        "id": 3,
        "serverPath": "\/Applications\/MAMP\/htdocs\/SupDocAPI\/Storage",
        "username": "toto",
        "defaultFolder": 2,
        "email": "toto@gmail.com"
    }
}

Answer 3

您尚未正确转义字符。试试这个

try {
        response=response.replace("\u0022","\"");
        JSONObject jsonObject=new JSONObject(response);
        testhash=jsonObject.getString("access_token");
    } catch (JSONException e) {
        e.printStackTrace();
    }

Answer 4

您必须先删除反斜杠：

// Replace all \" by "
String json = response.replaceAll("\\\"", "\"");


JsonParser parser = new JsonParser();
JsonObject toto= parser.parse(json).getAsJsonObject();
testhash = toto.get("access_token").getAsString();

在我的应用程序中将字符串转换为JSON时出错

4 个答案: