Android 服务器连接工具类HttpUtil

/*********************************************** * 网络工具 * * @author chen.lin * @version 1.0 ************************************************/
public class HttpUtil extends Activity {

    // 正式更新URL
    public static final String UPDATE_URL = "http://192.168.0.20:8088/android/update/androidapp/";// 120.86.69.225
    private static final String TAG = "HttpUtil";


    // 获得Get请求对象request
    public static HttpGet getHttpGet(String url) {
        HttpGet request = new HttpGet(url);
        return request;
    }


    // 获得Post请求对象request
    public static HttpPost getHttpPost(String url) {
        HttpPost request = new HttpPost(url);
        return request;
    }


    // 根据请求获得响应对象response
    public static HttpResponse getHttpResponse(HttpGet request) throws ClientProtocolException, IOException {
        HttpResponse response = new DefaultHttpClient().execute(request);
        return response;
    }


    // 根据请求获得响应对象response
    public static HttpResponse getHttpResponse(HttpPost request) throws ClientProtocolException, IOException {
        HttpResponse response = new DefaultHttpClient().execute(request);
        return response;
    }


    // 发送Post请求，获得响应查询结果
    public static String queryStringForPost(String url) {
        HttpPost request = HttpUtil.getHttpPost(url);
        HttpParams httpParameters = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParameters, 10000);
        HttpConnectionParams.setSoTimeout(httpParameters, 10000);
        DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);


        Logger.i(TAG, url);
        String result = null;
        try {
            // HttpUtil.getHttpResponse(request);//原方法，没做网络超时处理
            HttpResponse response = httpClient.execute(request);// 新方案，做了网络超时设置
            // 判断是否请求成功
            if (response.getStatusLine().getStatusCode() == 200) {
                // 获得响应
                result = EntityUtils.toString(response.getEntity());
                return result;
            } else {
                Logger.i(TAG, response.getStatusLine().getStatusCode() + "");
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        }
        return null;
    }


    // 获得响应查询结果
    public static String queryStringForPost(HttpPost request) {
        String result = null;
        try {
            // 获得响应对象
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            if (response.getStatusLine().getStatusCode() == 200) {
                // 获得响应
                result = EntityUtils.toString(response.getEntity());
                return result;
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        }
        return null;
    }


    // 发送Get请求，获得响应查询结果
    public static String queryStringForGet(String url) {
        // 获得HttpGet对象
        HttpGet request = HttpUtil.getHttpGet(url);
        String result = null;
        try {
            // 获得响应对象
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            if (response.getStatusLine().getStatusCode() == 200) {
                // 获得响应
                result = EntityUtils.toString(response.getEntity());
                return result;
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常！";
            return result;
        }
        return null;
    }


    /** * * @param url * 发送请求的URL * @return 服务器响应字符串 * @throws Exception */
    public static String getRequest(String url) throws Exception {
        // 创建HttpGet对象。
        HttpGet get = new HttpGet(url);
        HttpParams httpParameters = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParameters, 3000);
        HttpConnectionParams.setSoTimeout(httpParameters, 5000);
        DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
        // 发送GET请求
        HttpResponse httpResponse = httpClient.execute(get);
        // 如果服务器成功地返回响应
        if (httpResponse.getStatusLine().getStatusCode() == 200) {
            // 获取服务器响应字符串
            String result = EntityUtils.toString(httpResponse.getEntity());
            return result;
        }
        return null;
    }


    /** * 请求远程服务器，并封装参数信息 * @param url * @param rawParams * @return * @throws Exception */
    public static String postRequest(String url, Map<String, String> rawParams) throws Exception {
        // 创建HttpPost对象。
        HttpPost post = new HttpPost(url);
        // 如果传递参数个数比较多的话可以对传递的参数进行封装
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        for (String key : rawParams.keySet()) {
            // 封装请求参数
            params.add(new BasicNameValuePair(key, rawParams.get(key)));
        }
        //Logger.i(TAG, "params------------------->" + params);
        // 设置请求参数
        post.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
        HttpParams httpParameters = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParameters, 3000);
        HttpConnectionParams.setSoTimeout(httpParameters, 15000);
        DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
        // 发送POST请求
        HttpResponse httpResponse = httpClient.execute(post);
        // 如果服务器成功地返回响应
        String result = null;
        if (httpResponse.getStatusLine().getStatusCode() == 200) {
            // 获取服务器响应字符串
            result = EntityUtils.toString(httpResponse.getEntity(), "UTF-8");
            Logger.i(TAG, "result-------->" + result);
        }
        return result;
    }


}