校园网站建设成本,侨联网站建设方案,竞价sem托管,一台ip做两个网站网络爬虫模拟浏览器(获取有权限网站资源)#xff1a;获取URL下载资源分析处理public class http {public static void main(String[]args) throws Exception{//https更安全//URL.openStream()打开于URL的连接#xff0c;并返回一个InputStream用于从连接中读取数据//获取URLU…网络爬虫模拟浏览器(获取有权限网站资源)获取URL下载资源分析处理public class http {public static void main(String[]args) throws Exception{//https更安全//URL.openStream()打开于URL的连接并返回一个InputStream用于从连接中读取数据//获取URLURL urlnew URL(https://www.jd.com);//下载资源InputStream is url.openStream();BufferedReader brnew BufferedReader(new InputStreamReader(is,UTF-8));;String msgnull;while((msgbr.readLine())!null){System.out.println(msg);}br.close();}}获取有权限网络资源:public class http {public static void main(String[]args) throws Exception{//.openConnectio,返回一个URLConnection实例表示由所引用的远程对象的连接URL//URLConnection的子类有HttpURLConnection和JarURLConnectionURL urlnew URL(https://www.jd.com);//下载资源HttpURLConnection conn(HttpURLConnection)url.openConnection();conn.setRequestMethod(GET);//模拟浏览器得get请求conn.setRequestProperty( User-Agent,Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763);BufferedReader brnew BufferedReader(new InputStreamReader(conn.getInputStream(),UTF-8));String msgnull;while((msgbr.readLine())!null){System.out.println(msg);}br.close();}}
