使用Apache提供的HttpClient接口同样可以进行HTTP操作。
对于GET和POST请求方法的操作有所不同。GET方法的操作代码示例如下:
// http地址 String httpUrl = "http://192.168.1.110:8080/httpget.jsp?par=HttpClient_android_Get"; //HttpGet连接对象 HttpGet httpRequest = new HttpGet(httpUrl); //取得HttpClient对象 HttpClient httpclient = new DefaultHttpClient(); //请求HttpClient,取得HttpResponse HttpResponse httpResponse = httpclient.execute(httpRequest); //请求成功 if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { //取得返回的字符串 String strResult = EntityUtils.toString(httpResponse.getEntity()); mTextView.setText(strResult); } else { mTextView.setText("请求错误!"); } }
使用POST方法进行参数传递时,需要使用NameValuePair来保存要传递的参数。,另外,还需要设置所使用的字符集。代码如下所示:
// http地址 String httpUrl = "http://192.168.1.110:8080/httpget.jsp"; //HttpPost连接对象 HttpPost httpRequest = new HttpPost(httpUrl); //使用NameValuePair来保存要传递的Post参数 List<NameValuePair> params = new ArrayList<NameValuePair>(); //添加要传递的参数 params.add(new BasicNameValuePair("par", "HttpClient_android_Post")); //设置字符集 HttpEntity httpentity = new UrlEncodedFormEntity(params, "gb2312"); //请求httpRequest httpRequest.setEntity(httpentity); //取得默认的HttpClient HttpClient httpclient = new DefaultHttpClient(); //取得HttpResponse HttpResponse httpResponse = httpclient.execute(httpRequest); //HttpStatus.SC_OK表示连接成功 if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { //取得返回的字符串 String strResult = EntityUtils.toString(httpResponse.getEntity()); mTextView.setText(strResult); } else { mTextView.setText("请求错误!"); } }