Java by API/javax.swing.text.html/HTML

HTML.Attribute.HREF

  
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
  public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.jexp.ru");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);
    for (HTMLDocument.Iterator iterator = htmlDoc.getIterator(HTML.Tag.A); iterator.isValid(); iterator
        .next()) {
      AttributeSet attributes = iterator.getAttributes();
      String srcString = (String) attributes.getAttribute(HTML.Attribute.HREF);
      System.out.print(srcString);
      int startOffset = iterator.getStartOffset();
      int endOffset = iterator.getEndOffset();
      int length = endOffset - startOffset;
      String text = htmlDoc.getText(startOffset, length);
      System.out.println(" - " + text);
    }
  }
}

HTML: getAllAttributeKeys()

  
import javax.swing.text.html.HTML;
public class Main {
  public static void main(String[] args) {
    HTML.Tag[] tags = HTML.getAllTags();
    HTML.Attribute[] attrs = HTML.getAllAttributeKeys();
    System.out.println("HTML Tags:");
    for (int i = 0; i < tags.length - 1; i++) {
      System.out.print(tags[i] + ", ");
      if ((i % 8) == 7) {
        System.out.println("");
      }
    }
    System.out.println(tags[tags.length - 1]);
    System.out.println("\n\nHTML Attributes:");
    for (int i = 0; i < attrs.length - 1; i++) {
      System.out.print(attrs[i] + ", ");
      if ((i % 8) == 7) {
        System.out.println("");
      }
    }
    System.out.println(attrs[attrs.length - 1]);
  }
}

HTML.Tag

  
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
  public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.jexp.ru");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);
    ElementIterator iterator = new ElementIterator(htmlDoc);
    Element element;
    while ((element = iterator.next()) != null) {
      AttributeSet attributes = element.getAttributes();
      Object name = attributes.getAttribute(StyleConstants.NameAttribute);
      if ((name instanceof HTML.Tag) && (name == HTML.Tag.H1)) {
        StringBuffer text = new StringBuffer();
        int count = element.getElementCount();
        for (int i = 0; i < count; i++) {
          Element child = element.getElement(i);
          AttributeSet childAttributes = child.getAttributes();
          if (childAttributes.getAttribute(StyleConstants.NameAttribute) == HTML.Tag.CONTENT) {
            int startOffset = child.getStartOffset();
            int endOffset = child.getEndOffset();
            int length = endOffset - startOffset;
            text.append(htmlDoc.getText(startOffset, length));
          }
        }
        System.out.println(name + ": " + text.toString());
      }
    }
  }
}

HTML.Tag.A

  
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
  public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.jexp.ru");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);
    for (HTMLDocument.Iterator iterator = htmlDoc.getIterator(HTML.Tag.A); iterator.isValid(); iterator
        .next()) {
      AttributeSet attributes = iterator.getAttributes();
      String srcString = (String) attributes.getAttribute(HTML.Attribute.HREF);
      System.out.print(srcString);
      int startOffset = iterator.getStartOffset();
      int endOffset = iterator.getEndOffset();
      int length = endOffset - startOffset;
      String text = htmlDoc.getText(startOffset, length);
      System.out.println(" - " + text);
    }
  }
}

HTML.Tag.CONTENT

  
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
  public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.jexp.ru");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);
    ElementIterator iterator = new ElementIterator(htmlDoc);
    Element element;
    while ((element = iterator.next()) != null) {
      AttributeSet attributes = element.getAttributes();
      Object name = attributes.getAttribute(StyleConstants.NameAttribute);
      if ((name instanceof HTML.Tag) && (name == HTML.Tag.H1)) {
        StringBuffer text = new StringBuffer();
        int count = element.getElementCount();
        for (int i = 0; i < count; i++) {
          Element child = element.getElement(i);
          AttributeSet childAttributes = child.getAttributes();
          if (childAttributes.getAttribute(StyleConstants.NameAttribute) == HTML.Tag.CONTENT) {
            int startOffset = child.getStartOffset();
            int endOffset = child.getEndOffset();
            int length = endOffset - startOffset;
            text.append(htmlDoc.getText(startOffset, length));
          }
        }
        System.out.println(name + ": " + text.toString());
      }
    }
  }
}

HTML: Tag[] getAllTags()

      
import javax.swing.text.html.HTML;
public class Main {
  public static void main(String[] args) {
    HTML.Tag[] list = HTML.getAllTags();
    for (int i = 0; i < list.length; i++) {
      System.out.println((i + 1) + ": " + list[i]);
    }
  }
}
/*1: a
2: address
3: applet
4: area
5: b
6: base
7: basefont
8: big
9: blockquote
10: body
11: br
12: caption
13: center
14: cite
15: code
16: dd
17: dfn
18: dir
19: div
20: dl
21: dt
22: em
23: font
24: form
25: frame
26: frameset
27: h1
28: h2
29: h3
30: h4
31: h5
32: h6
33: head
34: hr
35: html
36: i
37: img
38: input
39: isindex
40: kbd
41: li
42: link
43: map
44: menu
45: meta
46: nobr
47: noframes
48: object
49: ol
50: option
51: p
52: param
53: pre
54: samp
55: script
56: select
57: small
58: span
59: strike
60: s
61: strong
62: style
63: sub
64: sup
65: table
66: td
67: textarea
68: th
69: title
70: tr
71: tt
72: u
73: ul
74: var
*/

HTML.Tag.H1

  
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
public class MainClass {
  public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.jexp.ru");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);
    ElementIterator iterator = new ElementIterator(htmlDoc);
    Element element;
    while ((element = iterator.next()) != null) {
      AttributeSet attributes = element.getAttributes();
      Object name = attributes.getAttribute(StyleConstants.NameAttribute);
      if ((name instanceof HTML.Tag) && (name == HTML.Tag.H1)) {
        StringBuffer text = new StringBuffer();
        int count = element.getElementCount();
        for (int i = 0; i < count; i++) {
          Element child = element.getElement(i);
          AttributeSet childAttributes = child.getAttributes();
          if (childAttributes.getAttribute(StyleConstants.NameAttribute) == HTML.Tag.CONTENT) {
            int startOffset = child.getStartOffset();
            int endOffset = child.getEndOffset();
            int length = endOffset - startOffset;
            text.append(htmlDoc.getText(startOffset, length));
          }
        }
        System.out.println(name + ": " + text.toString());
      }
    }
  }
}