[code="java"]public static void main(String[] args) throws IOException {
getWebData("http://bbs.csdn.net/topics/380263902");
}
private static String getWebData(String strurl) {
try {
URL url = new URL(strurl);
// 打开连接,此处只是创建一个实例,并没有真正的连接
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setConnectTimeout(300000);
httpCon.setReadTimeout(300000);
httpCon.connect();//建立连接
InputStream inputStream = httpCon.getInputStream();
InputStreamReader inputReader = new InputStreamReader(inputStream,"utf-8");
BufferedReader bufferReader = new BufferedReader(inputReader);
StringBuffer sb = new StringBuffer();
String inputLine = null;
while ((inputLine = bufferReader.readLine()) != null) {
sb.append(inputLine+"\n");
}
bufferReader.close();
inputReader.close();
inputStream.close();
httpCon.disconnect();
System.out.println(sb.toString().trim());
return sb.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("=======================================================");
return null;
}[/code]
代码如上,但是执行上面代码报如下错误
java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at test.getWebData(test.java:30)
at test.main(test.java:18)
我通过IE浏览器是可以打开http://bbs.csdn.net/topics/380263902该页面的,但是通过代码就不能获取页面数据,不知道是什么原因