HTTP GET请求返回HTML？

Question

我正在使用HTTP GET请求在安卓中加载数据。但是不知道为什么返回的是HTML而不是JSON结果。当在浏览器中加载时，相同的URL会得到JSON，但响应却是HTML。

我的HTTP GET调用格式如下...

url = new URL(urlString);

        //httpURLConnection = (HttpsURLConnection) url.openConnection();
        httpURLConnection = (HttpURLConnection) url.openConnection();

        httpURLConnection.setRequestMethod("GET");
        httpURLConnection.setRequestProperty("Connection", "keep-alive");

        httpURLConnection.setRequestProperty("Accept", "application/json"); // or application/jsonrequest
        httpURLConnection.setRequestProperty("Content-Type", "application/json");
        /*
        httpURLConnection.setRequestProperty("Content-Type",
                "application/json");*/
        httpURLConnection.setRequestProperty("UseCookieContainer", "True");
        httpURLConnection.setRequestProperty("Cookie", cokieValue);
        httpURLConnection.connect();

- Sankar

---

服务器如何决定发送哪种格式？您需要找出答案，然后相应地编写Android应用程序。 - Henry

似乎您遇到了404 HTML页面或其他错误。 - injecteer

不好意思，我的回复代码是200。只获取到HTML响应。 - Sankar

请在海报插件（网络浏览器）中检查此 Web 服务，然后在代码中进行测试。 - Krunal Indrodiya

请检查URL，确保返回结果。请返回JSON结果而不是ActionResult。 - sankar ganesh

Answer 1

一旦您检查了服务器端代码... 在这之后，意味着要更改代码如下...

url = new URL(urlString);

        httpURLConnection = (HttpsURLConnection) url.openConnection();
        //httpURLConnection = (HttpURLConnection) url.openConnection();
    //  HttpsURLConnection.setDefaultHostnameVerifier(new NullHostNameVerifier());
        httpURLConnection.setRequestMethod("GET");
        httpURLConnection.setRequestProperty("Connection", "keep-alive");
        httpURLConnection.setRequestProperty("Content-Type",
                "application/json");
        httpURLConnection.setRequestProperty("UseCookieContainer", "True");
        httpURLConnection.setChunkedStreamingMode(0);
        httpURLConnection.connect();

        if (httpURLConnection != null) {
            respCode = httpURLConnection.getResponseCode();
            messageStatus.setResponseCode(respCode);
        }
        if (respCode == 200) {
            InputStream responseStream = httpURLConnection.getInputStream();
            messageStatus.setResponseStream(responseStream);
        }

- user2801771

Answer 2

你是否掌控目标Web服务？

你是否尝试过使用"text/x-json"作为内容类型？最近我发现有些系统并不支持应用程序/json，即使它是标准格式。

- JackRussell

Answer 3

服务器必须返回JSON而不是仅仅打印。例如，如果您使用PHP，请使用以下代码：

print(json_encode($response));

不是简单的打印方法。

- Shalva Avanashvili