使用 java 从 json object 中提取 json 字符串数组值

Question

From below json object i have to extract the errorSummary with in errorCauses using java. i have attached the sample code which i am using in that i am getting a json exception error.

{
    "errorCode": "xxxx",
    "errorSummary": "xxxxxx",
    "errorLink": "xxxx",
    "errorId": "xxxxx",
    "errorCauses": [
        {
            "errorSummary": "Get the error summary"
        }
    ]
}

i am using below code to extract the errorCause but it's throwing error.

public String getExceptionMessage(MyRestTemplateException ex) {
        try {
            String Json = ex.getMessage();
            JSONObject json = new JSONObject(Json);
            JSONObject jsonData = new JSONObject();
            // String ExceptonMsg = json.getString("errorSummary");

            JSONObject errCause = new JSONObject(json.getString("errorCauses"));

            LOGGER.info("jsonArr AES " +errCause.toString());

            return errCause.toString();
        } catch (Exception e) {
            LOGGER.error("Error while get exception message: " + e.toString());
        }
        return null;
    }

Could some one help me to resolve this issue?

Answer 1

Replace

            JSONObject errCause = new JSONObject(json.getString("errorCauses"));

with

            JSONObject errCause = jsonObj.getJSONArray("errorCauses");