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);
         }
     }

Android Http请求框架二：xUtils 框架网络请求