java网络编程-爬虫+模拟浏览器-创新互联
                                            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
{
    //http+s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URL
    URL url=new URL("https://www.jd.com");
    //下载资源
    InputStream is = url.openStream();
    BufferedReader br=new BufferedReader(new InputStreamReader(is,"UTF-8"));;
    String msg=null;
    while((msg=br.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JarURLConnection
    URL url=new 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 br=new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));
    String msg=null;
    while((msg=br.readLine())!=null)
    {
        System.out.println(msg);
    }
    br.close();
}
}创新互联www.cdcxhl.cn,专业提供香港、美国云服务器,动态BGP最优骨干路由自动选择,持续稳定高效的网络助力业务部署。公司持有工信部办法的idc、isp许可证, 机房独有T级流量清洗系统配攻击溯源,准确进行流量调度,确保服务器高可用性。佳节活动现已开启,新人活动云服务器买多久送多久。
当前题目:java网络编程-爬虫+模拟浏览器-创新互联
URL网址:http://www.cqwzjz.cn/article/diiepj.html

 建站
建站
 咨询
咨询 售后
售后
 建站咨询
建站咨询 
 