从OkHttp响应Java获取值

我试图从OkHttp响应正文字符串中获取值，但得到以下错误

java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $

响应正文字符串如下所示（response.body（）.toString（））

我像这样解析它

Gson g = new Gson();
SuccessResponse resp = g.fromJson(resp.body().toString(),SuccessResponse.class); 

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如何从响应字符串中获取单个值。

您可以使用该字段创建POJO（手动或使用类似的服务）。然后，您可以通过以下方式创建POJO的实例：

String json = "{'MerchantRequestID': '000000000000','CheckoutRequestID':'170220202216211826','ResponseCode': '0','ResponseDescription':'Request accepted for processing','CustomerMessage':'Request accepted for processing'}";
    Gson g = new Gson();
    Example example = g.fromJson(json, Example.class);
    System.out.print(example.getCheckoutRequestID());

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看起来和我用问题更新的问题一样，我现在得到一个java.lang.IllegalStateException：应该是BEGIN_对象，但在第1行第1列路径$errorUpdated处是字符串。该示例运行正常。确保正确声明了类。

String json = "{'MerchantRequestID': '000000000000','CheckoutRequestID':'170220202216211826','ResponseCode': '0','ResponseDescription':'Request accepted for processing','CustomerMessage':'Request accepted for processing'}";
    Gson g = new Gson();
    Example example = g.fromJson(json, Example.class);
    System.out.print(example.getCheckoutRequestID());