java 抓取 https 网页内容-优快云博客

本文介绍了一个简单的Java程序，用于检查网站是否正常运行。通过发送HTTP请求并检查返回的内容，判断指定网站是否包含预期的信息。

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import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;

import javax.net.ssl.HttpsURLConnection;

public class JavaUrl {
/**
* Use for check our website is work well.
* @return
*/
public boolean checkWebsite(String checkUrl,String checkContent){
try {
URL url = new URL(checkUrl);
HttpsURLConnection httpsConn = (HttpsURLConnection)url.openConnection();
//取得该连接的输入流，以读取响应内容
InputStream ins = httpsConn.getInputStream();
BufferedReader breader = new BufferedReader(new InputStreamReader(ins));
String info = breader.readLine();
long nowTime =new java.util.Date().getTime();
while (info != null) {
if(new java.util.Date().getTime() -nowTime >10000)
return false;//达到10秒就认为超时
if(info != null && info.indexOf(checkContent)!=-1)
return true;
info = breader.readLine();
}
} catch (Exception e) {
System.out.println("Can't get content:"+checkContent +" from URL:"+checkUrl);
System.out.println("The error is:"+e.getMessage());
e.printStackTrace();
return false;
}
return false;
}
}