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网友分享于:Jan 1, 1970 8:00:00 AM    来源: IT货架   

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android的HttpClient实现简单的get和post请求

[1].[代码] [Java]代码 跳至 [1]

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/**
  * Http工具类
  */
public class HttpUtil {
     // 创建HttpClient对象
     public static HttpClient httpClient = new DefaultHttpClient();
     public static final String BASE_URL = "" ;
 
     /**
      * get请求
      *
      * @param url
      *            发送请求的URL
      * @return 服务器响应字符串
      * @throws Exception
      */
     public static String doGet(String url) throws Exception {
         // 创建HttpGet对象。
         HttpGet get = new HttpGet(url);
         // 发送GET请求
         HttpResponse httpResponse = httpClient.execute(get);
         // 如果服务器成功地返回响应
         if (httpResponse.getStatusLine().getStatusCode() == 200 ) {
             // 获取服务器响应字符串
             HttpEntity entity = httpResponse.getEntity();
             InputStream content = entity.getContent();
             return convertStreamToString(content);
         }
         return null ;
     }
 
     /**
      * post请求
      *
      * @param url
      *            发送请求的URL
      * @param params
      *            请求参数
      * @return 服务器响应字符串
      * @throws Exception
      */
     public static String doPost(String url, Map<String, String> rawParams)
             throws Exception {
         // 创建HttpPost对象。
         HttpPost post = new HttpPost(url);
         // 如果传递参数个数比较多的话可以对传递的参数进行封装
         List<NameValuePair> params = new ArrayList<NameValuePair>();
         for (String key : rawParams.keySet()) {
             // 封装请求参数
             params.add( new BasicNameValuePair(key, rawParams.get(key)));
         }
         // 设置请求参数
         post.setEntity( new UrlEncodedFormEntity(params, "utf-8" ));
         // 发送POST请求
         HttpResponse httpResponse = httpClient.execute(post);
         // 如果服务器成功地返回响应
         if (httpResponse.getStatusLine().getStatusCode() == 200 ) {
             // 获取服务器响应字符串
             HttpEntity entity = httpResponse.getEntity();
             InputStream content = entity.getContent();
             return convertStreamToString(content);
         }
         return null ;
     }
 
     /**
      * 获取服务器的响应,转换为字符串
      */
     private static String convertStreamToString(InputStream is) {
         BufferedReader reader = new BufferedReader( new InputStreamReader(is));
         StringBuilder sb = new StringBuilder();
         String line = null ;
         try {
             while ((line = reader.readLine()) != null ) {
                 sb.append(line);
             }
         } catch (IOException e) {
             e.printStackTrace();
         } finally {
             try {
                 is.close();
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
         return sb.toString();
     }
}

android开发,http工具类

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