无论是使用HttpGet，还是使用HttpPost，都必须通过如下3步来访问HTTP资源。
1.创建HttpGet或HttpPost对象，将要请求的URL通过构造方法传入HttpGet或HttpPost对象。
2.使用DefaultHttpClient类的execute方法发送HTTP GET或HTTP POST请求，并返回HttpResponse对象。
3.通过HttpResponse接口的getEntity方法返回响应信息，并进行相应的处理。
如果使用HttpPost方法提交HTTP POST请求，则需要使用HttpPost类的setEntity方法设置请求参数。参数则必须用NameValuePair[]数组存储。
HttpGet
- public String doGet()
- {
- String uriAPI = "http://XXXXX?str=I+am+get+String";
- String result= "";
- HttpGet httpRequst = new HttpGet(uriAPI);
-
- try {
-
- HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequst);
- if(httpResponse.getStatusLine().getStatusCode() == 200)
- {
- HttpEntity httpEntity = httpResponse.getEntity();
- result = EntityUtils.toString(httpEntity);
-
- result.replaceAll("\r", "");
- }
- else
- httpRequst.abort();
- } catch (ClientProtocolException e) {
-
- e.printStackTrace();
- result = e.getMessage().toString();
- } catch (IOException e) {
-
- e.printStackTrace();
- result = e.getMessage().toString();
- }
- return result;
- }
HttpPost
如果使用HttpPost方法提交HTTP POST请求，则需要使用HttpPost类的setEntity方法设置请求参数。参数则必须用NameValuePair[]数组存储。
- public String doPost()
- {
- String uriAPI = "http://XXXXXX";//Post方式没有参数在这里
- String result = "";
- HttpPost httpRequst = new HttpPost(uriAPI);
-
- List <NameValuePair> params = new ArrayList<NameValuePair>();
- params.add(new BasicNameValuePair("str", "I am Post String"));
-
- try {
- httpRequst.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
- HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequst);
- if(httpResponse.getStatusLine().getStatusCode() == 200)
- {
- HttpEntity httpEntity = httpResponse.getEntity();
- result = EntityUtils.toString(httpEntity);
- }
- } catch (UnsupportedEncodingException e) {
-
- e.printStackTrace();
- result = e.getMessage().toString();
- }
- catch (ClientProtocolException e) {
-
- e.printStackTrace();
- result = e.getMessage().toString();
- }
- catch (IOException e) {
-
- e.printStackTrace();
- result = e.getMessage().toString();
- }
- return result;
- }
以发送连接请求时，需要设置链接超时和请求超时等参数，否则会长期停止或者崩溃。
- HttpParams httpParameters = new BasicHttpParams();
- HttpConnectionParams.setConnectionTimeout(httpParameters, 10*1000);
- HttpConnectionParams.setSoTimeout(httpParameters, 10*1000);
- HttpConnectionParams.setSocketBufferSize(params, 8192);
- HttpClient httpclient = new DefaultHttpClient(httpParameters);
-
-
-
- 由于是联网，在AndroidManifest.xml中添加网络连接的权限
- <uses-permission android:name="android.permission.INTERNET"/>
HTTPClient模块的HttpGet和HttpPost
原文：http://www.cnblogs.com/dubo-/p/7912830.html
