Java AESFast：好的-当我试图解析HTML文件时，它是什么意思？_Java_Parsing_Web Scraping_Jsoup_Aes

Java AESFast：好的-当我试图解析HTML文件时，它是什么意思？

java parsing web-scraping

Java AESFast：好的-当我试图解析HTML文件时，它是什么意思？,java,parsing,web-scraping,jsoup,aes,Java,Parsing,Web Scraping,Jsoup,Aes,我之所以这么做，是因为我正在努力学习如何解析Html文件因此，当我尝试运行此代码时，从示例： import java.io.File; import java.io.IOException; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; public class Parse { public static void main(String[

我之所以这么做，是因为我正在努力学习如何解析Html文件

因此，当我尝试运行此代码时，从示例：

import java.io.File; 
import java.io.IOException;
import org.jsoup.Jsoup; 
import org.jsoup.nodes.Document; 
import org.jsoup.nodes.Element;




public class Parse {

    public static void main(String[] args) {

    //1
     String HTMLSTring = "<!DOCTYPE html>" 
                        + "<html>" 
                        + "<head>" 
                        + "<title>JSoup Example</title>" 
                        + "</head>" 
                        + "<body>" 
                        + "<table><tr><td><h1>HelloWorld</h1></tr>" 
                        + "</table>" 
                        + "</body>" 
                        + "</html>";

     Document html = Jsoup.parse(HTMLSTring); 

     String title = html.title(); 
     String h1 = html.body().getElementsByTag("h1").text();

     System.out.println("firts thing:");
     System.out.println("Input HTML String to JSoup :" + HTMLSTring);
     System.out.println("After parsing, Title : " + title);
     System.out.println("Afte parsing, Heading : " + h1);

     //2
     Document doc;
     try {
         doc = Jsoup.connect("http://google.com/").get(); 
         title = doc.title(); 
         } catch (IOException e) 
         { 
             e.printStackTrace(); 
         } 
     System.out.println("Second thing, reading html page from a URL document: ");
     System.out.println("Jsoup Can read HTML page from URL, title : " + title);

    //3
    // JSoup Example 3 - Parsing an HTML file in Java //
     //Document htmlFile = Jsoup.parse("login.html", "ISO-8859-1"); 
     // wrong 

     Document htmlFile = null;
     try { 
         htmlFile = Jsoup.parse(new File("login.html"), "ISO-8859-1");
         } catch (IOException e) 
            { 
             e.printStackTrace();
             } // right 

         title = htmlFile.title(); 
         Element div = htmlFile.getElementById("login"); 
         String cssClass = div.className(); 
         // getting class form HTML element 
         System.out.println("Jsoup can also parse HTML file directly"); 
         System.out.println("title : " + title); 
         System.out.println("class of div tag : " + cssClass); 
     }

    }

编辑
我重新下载了eclipse，现在输出正常，但我仍然不知道发生了什么