Android Http请求框架一：Get 和 Post 请求

1、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请求     * @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() ;            //设置超时时间 10s            connection.setConnectTimeout(10000);              //设置请求方式            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请求     * @param httpUrl     * @return     */    public String httpPost( String httpUrl ){        String result = "" ;        // 第一步，创建HttpPost对象         HttpPost httpPost = new HttpPost( httpUrl );         // 设置HTTP POST请求参数必须用NameValuePair对象         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 {             // 设置httpPost请求参数             httpPost.setEntity(new UrlEncodedFormEntity( params , HTTP.UTF_8 ));             HttpClient httpClient = new DefaultHttpClient() ;            // 请求超时  10s            httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000 ) ;            // 读取超时  10s            httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000 );            httpResponse = httpClient.execute( httpPost ) ;             if (httpResponse.getStatusLine().getStatusCode() == 200) {                 // 第三步，使用getEntity方法活得返回结果                 result  = EntityUtils.toString(httpResponse.getEntity());             }         } catch (ClientProtocolException e) {             e.printStackTrace();         } catch (IOException e) {             e.printStackTrace();         }         return result ;    } }

 

2、异步请求

/**       * 异步请求       * @author admin       */      class GetData extends AsyncTask< String , Integer , String >{            @Override          protected String doInBackground(String... params) {             HttpUtil httpUtil = new HttpUtil() ;             String resutl = httpUtil.httpGet( params[0] ) ;             if( resutl == null ){                 return "" ;             }             return resutl ;         }          @Override         protected void onPostExecute(String result) {             super.onPostExecute(result);         }     }