向URL发送请求

String content = "";
URL url = null;
URLConnection connection = null;

url = new URL("http://localhost:8080/xtest/URLresponse.jsp?uu=test");
connection = url.openConnection();//打开连接
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));//打开此连接的输入流
String result;
while ((result = reader.readLine()) != null) {
	content += "\n" + result;
}
reader.close();//关闭输入流
System.out.println(content);//控制台中输出连接网页的内容

		try {		     
			URL url = new URL("http://localhost:8080/xtest/test.jsp?uu=test");
			HttpURLConnection  connection = (HttpURLConnection)url.openConnection();
			if(connection.getResponseCode()!=404){
				SAXReader sax = new SAXReader();//解析返回的XML
				Document doc = sax.read(connection.getInputStream());
				Element root = doc.getRootElement();
//				String xml = doc.asXML();
//				String xmlStr = xml.toString();
				String status  = root.element("status").getText();
				String sn  = root.element("sn").getText();
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}