HttpClient发起POST请求

此函数返回请求结果

public static String executePost(String url, List<NameValuePair> params) {HttpPost httpPost = new HttpPost(url);//post请求，设置URL地址try {httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));//设置请求参数和编码HttpResponse httpResponse = new DefaultHttpClient().execute(httpPost);//得到请求的结果responseif (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {//如果状态码是200String result = EntityUtils.toString(httpResponse.getEntity(),HTTP.UTF_8);//得到结果， EntityUtils.toString()函数默认返回编码为ISO-8859-1，需要指定toString的第二个参数为UTF-8，否则中午乱码return result;}} catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return "";}