android開發，http工具類

 
/**


Http工具類
*/
public class HttpUtil {
 // 創建HttpClient對象
 public static HttpClient httpClient = new DefaultHttpClient();
 public static final String BASE_URL = "";
/**

get請求

@param url
發送請求的URL
@return 服務器響應字符串
@throws Exception
*/
public static String doGet(String url) throws Exception {
 // 創建HttpGet對象。
 HttpGet get = new HttpGet(url);
 // 發送GET請求
 HttpResponse httpResponse = httpClient.execute(get);
 // 如果服務器成功地返回響應
 if (httpResponse.getStatusLine().getStatusCode() == 200) {

 // 獲取服務器響應字符串
 HttpEntity entity = httpResponse.getEntity();
 InputStream content = entity.getContent();
 return convertStreamToString(content);

}
 return null;
}
/**

post請求

@param url
發送請求的URL
@param params
請求參數
@return 服務器響應字符串
@throws Exception
*/
public static String doPost(String url, Map<String, String> rawParams)

 throws Exception {

// 創建HttpPost對象。
 HttpPost post = new HttpPost(url);
 // 如果傳遞參數個數比較多的話可以對傳遞的參數進行封裝
 List<NameValuePair> params = new ArrayList<NameValuePair>();
 for (String key : rawParams.keySet()) {

 // 封裝請求參數
 params.add(new BasicNameValuePair(key, rawParams.get(key)));

}
 // 設置請求參數
 post.setEntity(new UrlEncodedFormEntity(params, "utf-8"));
 // 發送POST請求
 HttpResponse httpResponse = httpClient.execute(post);
 // 如果服務器成功地返回響應
 if (httpResponse.getStatusLine().getStatusCode() == 200) {

 // 獲取服務器響應字符串
 HttpEntity entity = httpResponse.getEntity();
 InputStream content = entity.getContent();
 return convertStreamToString(content);

}
 return null;
}
/**

獲取服務器的響應，轉換為字符串
*/
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();
}
}



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