Android Http請求框架一：Get 和 Post 請求

一、HttpUtil

package com.app.android01; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.ArrayList; import java.util.List; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.params.CoreConnectionPNames; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; public class HttpUtil { /** * get請求 * @param httpUrl * @return * @throws  
     */
    public String httpGet( String httpUrl ){ String result = "" ; try { BufferedReader reader = null; StringBuffer sbf = new StringBuffer() ; URL url = new URL( httpUrl ) ; HttpURLConnection connection = (HttpURLConnection) url.openConnection() ; //設置超時時間 10s
            connection.setConnectTimeout(10000); //設置請求方式
            connection.setRequestMethod( "GET" ) ; connection.connect(); InputStream is = connection.getInputStream() ; reader = new BufferedReader(new InputStreamReader( is , "UTF-8" )) ; String strRead = null ; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); result = sbf.toString(); } catch (Exception e) { e.printStackTrace(); } return result; } /** * httpPost請求 * @param httpUrl * @return
     */
    public String httpPost( String httpUrl ){ String result = "" ; // 第一步，建立HttpPost對象 
        HttpPost httpPost = new HttpPost( httpUrl ); // 設置HTTP POST請求參數必須用NameValuePair對象 
        List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("action", "downloadAndroidApp")); params.add(new BasicNameValuePair("packageId", "89dcb664-50a7-4bf2-aeed-49c08af6a58a")); params.add(new BasicNameValuePair("uuid", "test_ok1")); HttpResponse httpResponse = null; try { // 設置httpPost請求參數 
            httpPost.setEntity(new UrlEncodedFormEntity( params , HTTP.UTF_8 )); HttpClient httpClient = new DefaultHttpClient() ; // 請求超時 10s
            httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000 ) ; // 讀取超時 10s
            httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000 ); httpResponse = httpClient.execute( httpPost ) ; if (httpResponse.getStatusLine().getStatusCode() == 200) { // 第三步，使用getEntity方法活得返回結果 
                result  = EntityUtils.toString(httpResponse.getEntity()); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return result ; } }

 

二、異步請求

 1 /**
 2  * 異步請求  3  * @author admin  4      */
 5     class GetData extends AsyncTask< String , Integer , String >{  6 
 7  @Override  8         protected String doInBackground(String... params) {  9             HttpUtil httpUtil = new HttpUtil() ; 10             String resutl = httpUtil.httpGet( params[0] ) ; 11             if( resutl == null ){ 12                 return "" ; 13  } 14             return resutl ; 15  } 16 
17  @Override 18         protected void onPostExecute(String result) { 19             super.onPostExecute(result); 20  } 21     }

 

 

Android Http請求框架二：xUtils 框架網絡請求