📄 htmlpage.java
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package ir.webutils;import java.util.*;import java.io.*;import ir.utilities.*;import java.net.*;/** * HTMLPage is a representation of information about a web * page. * * @author Ted Wild and Ray Mooney */public class HTMLPage { /** The original link to this page */ protected final Link link; /** The text of the page */ protected final String text; /** The links on this page */ protected List<Link> outLinks; /** Constructs an <code>HTMLPage</code> with the given link and text. * * @param link <code>Link</code> object to the given page. * * @param text The text of the page. */ public HTMLPage(Link link, String text) { this.link = link; this.text = text; } /** Returns the full text of this page. None of the HTML is * stripped out. * * @return The text of the this page. */ public String getText() { return text; } /** Returns the <code>Link</code> object that was used to access * this page. * * @return The <code>Link</code> object that was used to access * this page. */ public Link getLink() { return link; } /** Set of the outLinks for this page to given list */ public void setOutLinks(List<Link> links) { outLinks = links; } /** Get the list of out links from this page. */ public List<Link> getOutLinks() { return outLinks; } /** Clients should always call this method before indexing an HTML * page if they want to obey the "NOINDEX" directive in the Robots * META tag. Always returns <code>true</code> in default implementation. * * @return <code>true</code> iff. the page can be indexed. Always * returns <code>true</code> in the default implementation. */ public boolean indexAllowed() { return true; } /** Returns true if the page is empty or a 404 error. */ public boolean empty() { if(text.equals("") || MoreString.indexOfIgnoreCase(text, "<title>404 Not Found") >= 0) return true; return false; } /** Writes web page to a file with a BASE HTML element with the * original URL. * * @param dir The directory to store the file in. * * @param name The name of the file. */ public void write(File dir, String name) { try { PrintWriter out = new PrintWriter(new FileWriter(new File(dir, name + ".html"))); // Add an HTML "BASE" element with the original URL so that // image and link references in the page will be properly "based" and work correctly. // Ideally, this command should be added to the <head> part of the document; however, // many documents don't have explicit <head>'s and putting it at the from of the // document seems to work since browsers are robust to "ungrammatical" HTML out.println("<base href=\"" + addEndSlash(link.getURL()) + "\">"); out.print(text); out.close(); } catch (IOException e) { System.err.println("HTMLPage.write(): " + e); } } /** If URL looks like a directory rather than a file, then * add a "/" at the end so that it acts as a proper base URL * for completing URLs in this page */ protected static URL addEndSlash(URL url) { String fileName = url.getPath(); if (MoreString.fileExtension(fileName).equals("")) try { return new URL(url.toString() + "/"); } catch (MalformedURLException e) { System.err.println("HTMLPage: " + e); } return url; } }⌨️ 快捷键说明
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