android Http 工具类

  1 package com.phone;
  2 
  3 import java.io.ByteArrayOutputStream;
  4 import java.io.IOException;
  5 import java.io.InputStream;
  6 import java.io.UnsupportedEncodingException;
  7 import java.util.ArrayList;
  8 import java.util.List;
  9 import java.util.Map;
 10 
 11 import org.apache.http.HttpResponse;
 12 import org.apache.http.NameValuePair;
 13 import org.apache.http.client.HttpClient;
 14 import org.apache.http.client.entity.UrlEncodedFormEntity;
 15 import org.apache.http.client.methods.HttpGet;
 16 import org.apache.http.client.methods.HttpPost;
 17 import org.apache.http.impl.client.DefaultHttpClient;
 18 import org.apache.http.message.BasicNameValuePair;
 19 import org.apache.http.protocol.HTTP;
 20 import org.apache.http.util.EntityUtils;
 21 import org.json.JSONObject;
 22 import android.util.Log;
 23 
 24 public class HttpUtil {
 25     //创建HttpClient对象
 26     public static HttpClient httpClient =  new DefaultHttpClient();
 27     public static final String  BASE_URL = "http://10.254.31.110/blog_client_pack.php";
 28     
 29     /**
 30      * 
 31      * @param url 发送请求的url
 32      * @return String 服务器响应字符串
 33      * @throws Exception
 34      */
 35     public static String getRequest(String url ) throws Exception{
 36         if(url.equals(null)){
 37             url = BASE_URL;
 38         }
 39         Log.d("http", "-------url--------"+url);
 40         HttpGet get = new HttpGet(url);
 41         HttpResponse httpResponse = httpClient.execute(get);
 42         if(httpResponse.getStatusLine().getStatusCode() == 200 ){
 43             String result = EntityUtils.toString(httpResponse.getEntity());
 44 //            Log.d("http", "-------get--------"+result.length()+";result:"+result);
 45             return result;
 46         }
 47         return null;
 48     }
 49     
 50     /**
 51      * 
 52      * @param url 发送请求的url
 53      * @param rawParams 请求参数
 54      * @return String 服务器响应字符串
 55      * @throws Exception
 56      */
 57     public static String postRequest(String url, Map<String,String> rawParams ) throws Exception{
 58         if(url.equals(null)){
 59             url = BASE_URL;
 60         }
 61         //创建HttpPost对象
 62         HttpPost post = new HttpPost(url);
 63         //如果传递参数个数比较多，可以对传递的参数进行封装
 64         List<NameValuePair> params = new ArrayList<NameValuePair>();
 65         for(String key:rawParams.keySet()){
 66             //封装请求参数
 67             params.add(new BasicNameValuePair(key, rawParams.get(key)));
 68         }
 69 
 70         Log.d("http", params.toString());
 71         //设置请求参数
 72         post.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
 73         //发送post请求
 74         HttpResponse httpResponse = httpClient.execute(post);
 75         //如果服务器成功地返回响应
 76         if(httpResponse.getStatusLine().getStatusCode() == 200 ){
 77             //获取服务器响应字符串
 78             String result = EntityUtils.toString(httpResponse.getEntity());
 79             Log.d("http", "-------post--------"+result.length());
 80             return result;
 81         }    
 82         return null;
 83     }
 84     
 85     private String getData( InputStream inputStream ) throws Exception{
 86         String data = "";
 87         //内存缓冲区
 88         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
 89         int len = -1;
 90         byte[] buf = new byte[1024];
 91         try{
 92             while((len = inputStream.read(buf))!= -1 ){
 93                 outputStream.write(buf,0,len);
 94             }
 95             byte[] bytes = outputStream.toByteArray();
 96             data = new String(bytes);
 97         } catch( IOException e){
 98             e.printStackTrace();
 99         }
100         return data;
101     }
102 }