使用HttpClient：
NameValuePair nameValuePair1 = new BasicNameValuePair("name", "yang");
NameValuePair nameValuePair2 = new BasicNameValuePair("pwd","123123");
List nameValuePairs = new ArrayList();
nameValuePairs.add(nameValuePair1);
nameValuePairs.add(nameValuePair2);
String validateURL = "http://10.0.2.2:8080/testhttp1/TestServlet";
try {
HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams,5000); //设置连接超时为5秒
HttpClient client = new DefaultHttpClient(httpParams); // 生成一个http客户端发送请求对象
HttpPost httpPost = new HttpPost(urlString); //设定请求方式
if (nameValuePairs!=null && nameValuePairs.size()!=0) {
//把键值对进行编码操作并放入HttpEntity对象中
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs,HTTP.UTF_8));
}
HttpResponse httpResponse = client.execute(httpPost); // 发送请求并等待响应
// 判断网络连接是否成功
if (httpResponse.getStatusLine().getStatusCode() != 200) {
System.out.println("网络错误异常！!!!");
return false;
}
HttpEntity entity = httpResponse.getEntity(); // 获取响应里面的内容
inputStream = entity.getContent(); // 得到服务气端发回的响应的内容（都在一个流里面）
// 得到服务气端发回的响应的内容（都在一个字符串里面）
// String strResult = EntityUtils.toString(entity);
} catch (Exception e) {
System.out.println("这是异常！");
}

使用HttpURLConnection：

String validateURL="http://10.0.2.2:8080/testhttp1/TestServlet?name=yang&pwd=123123";
try {
URL url = new URL(validateUrl); //创建URL对象
//返回一个URLConnection对象，它表示到URL所引用的远程对象的连接
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000); //设置连接超时为5秒
conn.setRequestMethod("GET"); //设定请求方式
conn.connect(); //建立到远程对象的实际连接
//返回打开连接读取的输入流
DataInputStream dis = new DataInputStream(conn.getInputStream());
//判断是否正常响应数据
if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
System.out.println("网络错误异常！!!!");
return false;
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("这是异常！");
} finally {
if (conn != null) {
conn.disconnect(); //中断连接
}
}