HttpClient的一种简单实现Demo

  1 /**
  2  * 测试HttpClient2种请求网络方式的Activity
  3  * get和post
  4  *
  5  */
  6 public class HttpClientActivity extends Activity {
  7     private HttpParams httpParams ;
  8     private HttpClient httpClient ;
  9     @Override
 10     protected void onCreate(Bundle savedInstanceState) {
 11         super.onCreate(savedInstanceState);
 12         setContentView(R.layout.activity_httpclient);
 13         EditText et1 = (EditText) this.findViewById(R.id.et1);
 14         List<NameValuePair> params = new ArrayList<NameValuePair>();
 15         params.add(new BasicNameValuePair("email", "firewings.r@gmail.com"));
 16         params.add(new BasicNameValuePair("password", "954619"));
 17         params.add(new BasicNameValuePair("remember", "1"));
 18         params.add(new BasicNameValuePair("from", "kx"));
 19         params.add(new BasicNameValuePair("login", "登录"));
 20         params.add(new BasicNameValuePair("refcode", ""));
 21         params.add(new BasicNameValuePair("refuid", "0"));
 22         Map params2 = new HashMap();
 23         params2.put("hl", "zh-CN");
 24         params2.put("source", "hp");  
 25         params2.put("q", "haha");  
 26         params2.put("aq", "f");  
 27         params2.put("aqi", "g10");  
 28         params2.put("aql", "");  
 29         params2.put("oq", "");
 30         String url2 = "http://www.google.cn/search";
 31         String url = "http://wap.kaixin001.com/home/";
 32         
 33         getHttpClient();
 34         et1.setText(doPost(url, params));
 35 //        et1.setText(doGet(url2, params2));
 36         
 37     }
 38     /**
 39      * get 方式发送网络请求
 40      * @param url    url地址
 41      * @param params    请求参数
 42      * @return    返回请求结果statusLine状态行数据
 43      */
 44     public String doGet(String url,Map params){
 45         /* 建立HTTPGet对象 */
 46         String paramStr = "";
 47         Iterator iter = params.entrySet().iterator();
 48         while(iter.hasNext()){
 49             Map.Entry entry = (Entry) iter.next();
 50             Object key = entry.getKey();
 51             Object val = entry.getValue();
 52             paramStr += paramStr = "&" + key + "=" + val ;
 53         }
 54         if(!paramStr.equals("")){
 55             paramStr.replaceFirst("&", "?");
 56             url += paramStr;
 57         }
 58         HttpGet httpRequest = new HttpGet(url);
 59         String strResult = "doGetError";
 60         try {
 61             /* 发动请求并等待回应 */
 62             HttpResponse httpResponse = httpClient.execute(httpRequest);
 63             /* 若状态码为200 ok */
 64             if(httpResponse.getStatusLine().getStatusCode() == 200){
 65                 /* 读返回数据 */
 66                 strResult = EntityUtils.toString(httpResponse.getEntity());
 67             }else{
 68                 strResult = "Error Response : " + httpResponse.getStatusLine().toString();
 69             }
 70         } catch (ClientProtocolException e) {
 71             strResult = e.getMessage().toString();
 72             e.printStackTrace();
 73         } catch (IOException e) {
 74             strResult = e.getMessage().toString();
 75             e.printStackTrace();
 76         }
 77         return strResult;
 78     }
 79     /**
 80      * 
 81      * @param url
 82      * @param params
 83      * @return    服务器返回的数据 httpResponse.getEntity()
 84      */
 85     public String doPost(String url,List<NameValuePair> params){
 86         /*　建立HTTPPost对象　*/
 87         HttpPost httpRequest = new HttpPost(url);
 88         String strResult = "doPostError";
 89         try {
 90             /* 添加请求参数到请求对象 */
 91             httpRequest.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
 92             /* 发送请求并等待响应 */
 93             HttpResponse httpResponse = httpClient.execute(httpRequest);
 94             /* 若状态码 为 200 */
 95             if(httpResponse.getStatusLine().getStatusCode() == 200){
 96                 /* 读返回数据 */
 97                 strResult = EntityUtils.toString(httpResponse.getEntity());
 98             }else{
 99                 strResult = "Error Response : " + httpResponse.getStatusLine().toString();
100             }
101         } catch (ClientProtocolException e) {
102             strResult = e.getMessage().toString();
103             e.printStackTrace();
104         } catch (IOException e) {
105             strResult = e.getMessage().toString();
106             e.printStackTrace();
107         }
108         return strResult;
109     }
110     /**
111      * 获取一个HttpClient对象
112      * @return 返回一个HttpClient对象
113      */
114     public HttpClient getHttpClient(){
115         //创建HttpParams以用来设置HTTP参数(这一部分不是必须的)
116         this.httpParams = new BasicHttpParams();
117         //设置连接超时和socket超时，以及socket缓存大小
118         HttpConnectionParams.setConnectionTimeout(httpParams, 20 * 1000);
119         HttpConnectionParams.setSoTimeout(httpParams, 20 * 1000);
120         HttpConnectionParams.setSocketBufferSize(httpParams, 8196);
121         //设置重定向，默认为true
122         HttpClientParams.setRedirecting(httpParams, true);
123         //设置user agent
124         String userAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2) Gecko/20100115 Firefox/3.6";
125         HttpProtocolParams.setUserAgent(httpParams, userAgent);
126         //创建一个HttpClient实例
127         //注意 HttpClient httpClient = new HttpClient();是Commons HttpClient 中的用法
128         //在Android 1.5 中我们需要使用 Apache 的缺省实现 DefaultHttpClient
129         httpClient = new DefaultHttpClient();
130         return httpClient;
131     }
132 }