Recursive DOM parsing (parse) XML

Friends.xml

[HTML]View plain copy

2. <span style="FONT-SIZE:16PX;" ><? XML version= "1.0" encoding="Utf-8"?>
8. <friends date="+">
12. <!--here for comments--
16. <friend id="1">
20. < name > Little Red </name >
22. <QQ>123456789</qq>
26. </friend>
30. <friend>
34. < name > Xiaoping </name >
36. <QQ>12345678</qq>
40. </friend>
44. <friend>
48. < name mark="Hello"> Xiaomin </name >
50. <QQ>1234567</qq>
54. </friend>
58. <friend>
62. < name > Xiaoliang </name >
64. <QQ>987654321</qq>
68. </friend>
72. <friend>
76. < name > Xiaojian </name >
78. <QQ>98765432</qq>
82. </friend>
86. </Friends>
90. </span>

DOM Parse XML

[Java]View plain copy

2. <span style="FONT-SIZE:16PX;"  >import java.io.File;
6. Import Javax.xml.parsers.DocumentBuilderFactory;
8. Import Javax.xml.parsers.DocumentBuilder;
12. Import org.w3c.dom.Element;
14. Import org.w3c.dom.Document;
16. Import Org.w3c.dom.NamedNodeMap;
18. Import org.w3c.dom.NodeList;
20. Import org.w3c.dom.Attr;
22. Import Org.w3c.dom.Node;
24. Import org.w3c.dom.Comment;
28. Use recursive DOM to parse any XML document, load the XML document into memory, occupy large memory, and randomly access
32. Public class Recursiondom_xml
34. {
36. public static void Main (string[] args) throws Exception
38. {
40. //1. Getting the DOM parser factory
42. Documentbuilderfactory dbf = Documentbuilderfactory.newinstance ();
46. //2. Obtaining a specific DOM parser
48. Documentbuilder db = Dbf.newdocumentbuilder ();
52. //Gets the root node of the XML document
54. Document document = Db.parse (new File ("Friends.xml"));
58. //Gets the root element node of the document
60. Element e = Document.getdocumentelement ();
64. Parsexml (e);
68. }
72. public static void Parsexml (element Element)
74. {
76. //Get information about the element node
78. String name = Element.getnodename ();
80. System.out.print ("<" + name);
84. //Gets the properties of this element node
86. NamedNodeMap map = Element.getattributes ();
90. //Gets the child node (including spaces) under the current element node (includes space) </span>

[Java]View plain copy

2. <span style="FONT-SIZE:16PX;"  > NodeList child = Element.getchildnodes ();
6. if (null! = map)
8. {
10. For (int i = 0; i < map.getlength (); i++)
12. {
14. Attr Attr = (Attr) map.item (i);
18. String name1 = Attr.getname ();
20. String value1 = Attr.getvalue ();
22. System.out.print ("" + name1 +"=\" "+ value1 +" \ "");
24. }
28. }
32. System.out.print (">");
36. For (int j = 0; j < Child.getlength (); j + +)
38. {
40. Node node = Child.item (j);
44. //Determine if the node is an element node, a recursive port
46. if (node.getnodetype () = = Node.element_node)
48. {
50. //Start recursion
52. Parsexml (Element) node);
54. }
58. //Judge if the node is not text, recursive exit
60. Else if (node.getnodetype () = = Node.text_node)
62. {
64. System.out.print (Node.getnodevalue () + "");
68. }
72. //Determine if the node is a comment
74. Else if (node.getnodetype () = = Node.comment_node)
76. {
78. System.out.print ("<!--");
80. Comment Comment = (Comment) node;
82. //comment content
84. String data = Comment.getdata ();
88. System.out.print (data);
90. System.out.print ("--");
94. }
96. }
100. System.out.println ("</" + name + ">");
106. }
112. }</span>

Recursive DOM parsing (parse) XML