在网络编程中，很多时候会遇到给你一个固定的url ，让你去耙一些东西回来，通常有如下三中操作：
method one :
URL url = new URL("http://www.baidu.com");
URLConnection urlcon = url.openConnection();
InputStream is = urlcon.getInputStream();
method two:
URL url = new URL("http://www.google.com.hk");
HttpURLConnection urlcon = (HttpURLConnection)url.openConnection();
InputStream is = urlcon.getInputStream();
method three:
URL url = new URL("http://www.sina.com.cn");
InputStream is = url.openStream();
但是这在三种方法之中，最好实用的是：method two ， 因为很多时候我们都是通过http协议来访问浏览器的。直接贴代码看吧：
String urlStr = "www.baidu.com";
URL url;
try {
url = new URL(urlStr);
URLConnection URLconnection = url.openConnection(); // 打开连接
HttpURLConnection httpConnection = (HttpURLConnection) URLconnection; // 类型转换
int responseCode = httpConnection.getResponseCode(); // 判断是什么协议的请求
// HttpURLConnection.
// 可以得到很多的类型
httpConnection.setRequestMethod("POST");
if (responseCode == HttpURLConnection.HTTP_OK) {
System.err.println("连接成功了... ...");
InputStream urlStream = httpConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(urlStream));
String sCurrentLine = "";
String sTotalString = "";
while ((sCurrentLine = bufferedReader.readLine()) != null) {
sTotalString += sCurrentLine;
}
System.err.println(sTotalString);
// 假设该url页面输出为"OK",对内容进行判断
if (sTotalString.equals("OK")) {
urlStream.close();
httpConnection.disconnect();
} else {
}
} else {
System.err.println("失败,不是Http请求... ...");
}
} catch (Exception e) {
// TODO Auto-generated catch blockeb
e.printStackTrace();
}
基本也就是这样的东东了，其他的处理方式和这个是一样的。。。