My Android生长之路(三)——【HttpClient】

My Android成长之路(三)——【HttpClient】
    
     HttpClient经常在开发的过程中会用到 所以这个是必须掌握的啦
     http请求主要常用的有get请求和post请求，如下：

//import 省略......public class HttpUtil {/** * HttpClient获取get请求的数据 * @param url 请求的地址 * @return 返回字符串 */public static String getDataByGet(String url) {StringBuilder sb = new StringBuilder();HttpClient client = new DefaultHttpClient();HttpParams httpParams = client.getParams();// 设置网络超时参数HttpConnectionParams.setConnectionTimeout(httpParams, 3000);HttpConnectionParams.setSoTimeout(httpParams, 5000);HttpGet request;try {// 发出request请求request = new HttpGet(url);// 返回response响应HttpResponse response = client.execute(request);// 判断请求是否成功if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();if (entity != null) {                //这边也可以作和post类似的操作 这个只是另一种情况BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8"),8192);String line = null;while ((line = reader.readLine()) != null) {sb.append(line + "\n");}reader.close();}}} catch (Exception e) {e.printStackTrace();}return sb.toString();}/** * HttpClient获取post请求<br/> * 例子：<br/> * List<NameValuePair > parms=new ArrayList<NameValuePair><br/> * parms.add(new BasicNameValuePair(“str”,"I am Post String”));<br/> * @param url 请求的地址 * @param parms 参数 * @return */public static String getDataByPost(String url, List<NameValuePair> parms) {String out = null;HttpClient client = new DefaultHttpClient();HttpPost request;try {// 发出request请求request = new HttpPost(new URI(url));request.setEntity(new UrlEncodedFormEntity(parms, HTTP.UTF_8));// 返回response响应HttpResponse response = client.execute(request);// 判断请求是否成功if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();if (entity != null) {out = EntityUtils.toString(entity);}}} catch (Exception e) {e.printStackTrace();}return out;}}