我可以使用我的java类成功连接到我的网站。

URLConnection myURLConnection=null; URL myURL=null; BufferedReader reader=null;

String mainUrl="https://example.com/ServCon/ServConI?"; 
StringBuilder sbPostData= new StringBuilder(mainUrl);        
sbPostData.append("page=").append(mpage);
mainUrl = sbPostData.toString();
try {
    //prepare connection
    myURL = new URL(mainUrl);
    myURLConnection = myURL.openConnection();
    myURLConnection.connect();

    reader= new BufferedReader(new  
    InputStreamReader(myURLConnection.getInputStream(),"UTF-8")); 
} catch(Exception e) {   
     System.out.println(e); 
}

但问题是，当我尝试使用相同的java类从jsp文件连接时，我会收到错误：

e = (SSLHandshakeException) javax.net.ssl.SSLHandshakeException:     
sun.security.validator.ValidatorException: PKIX path building failed: 
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid 
certification path to requested target

我使用的是Glassfish 5.1.0 jdk 1.8.0_301和apache netbeans 12.5