java抓取网页信息内容

CloseableHttpClient httpclient = HttpClients.createDefault();
HttpGet httpget = new HttpGet(net.trim());
httpget.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0"); // ��������ͷ��ϢUser-Agent
String state = "";
String content;
try {
CloseableHttpResponse response = httpclient.execute(httpget);
HttpEntity entity=response.getEntity();
content = EntityUtils.toString(entity, "utf-8");
//输出content就可以看到抓取的网页内容
response.close();
httpclient.close();

}catch (SocketException exception) {

}catch (Exception e) {

}