如何设置JSONParser的连接超时时间.makeHttpRequest在Android中

Question

我正在获取和发布JSONParser.makeHttpRequest的一些数据。当连接缓慢时，需要一段时间才能获得响应，我想将超时限制设置为5秒。我发现这篇文章展示了如何设置HttpResponse超时，但无法与JSONParser集成。

下面是我对HttpRequest

使用的代码

JSONParser jParser = new JSONParser();
List<NameValuePair> params = new ArrayList<NameValuePair>();
JSONObject json = jParser.makeHttpRequest(url, "GET", params);

如果我能得到一个代码片段或链接到其他地方的另一个帖子，我会很感激。

Answer 1

代码如下:

public class JSONParser {
    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";
    int timeout;
// constructor
public JSONParser() {
    timeout = new Values().gettimeout();
}
// function get json from url
// by making HTTP POST or GET method
public JSONObject makeHttpRequest(String url, String method,
        List<NameValuePair> params) {
    // Making HTTP request
    try {
         HttpParams httpParameters = new BasicHttpParams();
         HttpConnectionParams.setSoTimeout(httpParameters, timeout);
        // check for request method
        if(method == "POST"){
            // request method is POST
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
            HttpPost httpPost = new HttpPost(url);
            httpPost.setEntity(new UrlEncodedFormEntity(params));
            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();
        }else if(method == "GET"){
            // request method is GET
            DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
            String paramString = URLEncodedUtils.format(params, "utf-8");
            url += "?" + paramString;
            HttpGet httpGet = new HttpGet(url);
            HttpResponse httpResponse = httpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();
        }           
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }
    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }
    // return JSON String
    return jObj;
}
}

秘密是:

     HttpParams httpParameters = new BasicHttpParams();
     HttpConnectionParams.setSoTimeout(httpParameters, timeout);

和设置HttpParams

 DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);

调整你的代码来做这个;)

Answer 2

您可以使用Asynctask，并在一段时间后停止请求。