1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
import java.io.File;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class VSX {
public TreeModel parse(String filename) {
SAXParserFactory factory = SAXParserFactory.newInstance();
XMLTreeHandler handler = new XMLTreeHandler();
try {
// Parse the input.
SAXParser saxParser = factory.newSAXParser();
saxParser.parse(new File(filename), handler);
} catch (Exception e) {
System.err.println("File Read Error: " + e);
e.printStackTrace();
return new DefaultTreeModel(new DefaultMutableTreeNode("error"));
}
return new DefaultTreeModel(handler.getRoot());
}
public static class XMLTreeHandler extends DefaultHandler {
private DefaultMutableTreeNode root, currentNode;
public DefaultMutableTreeNode getRoot() {
return root;
}
// SAX Parser Handler methods...
public void startElement(String namespaceURI, String lName,
String qName, Attributes attrs) throws SAXException {
String eName = lName; // Element name
if ("".equals(eName))
eName = qName;
Tag t = new Tag(eName, attrs);
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(t);
if (currentNode == null) {
root = newNode;
} else {
// Must not be the root node...
currentNode.add(newNode);
}
currentNode = newNode;
}
public void endElement(String namespaceURI, String sName, String qName)
throws SAXException {
currentNode = (DefaultMutableTreeNode) currentNode.getParent();
}
public void characters(char buf[], int offset, int len)
throws SAXException {
String s = new String(buf, offset, len).trim();
((Tag) currentNode.getUserObject()).addData(s);
}
}
public static class Tag {
private String name;
private String data;
private Attributes attr;
public Tag(String n, Attributes a) {
name = n;
attr = a;
}
public String getName() {
return name;
}
public Attributes getAttributes() {
return attr;
}
public void setData(String d) {
data = d;
}
public String getData() {
return data;
}
public void addData(String d) {
if (data == null) {
setData(d);
} else {
data += d;
}
}
public String getAttributesAsString() {
StringBuffer buf = new StringBuffer(256);
for (int i = 0; i < attr.getLength(); i++) {
buf.append(attr.getQName(i));
buf.append("=\"");
buf.append(attr.getValue(i));
buf.append("\"");
}
return buf.toString();
}
public String toString() {
String a = getAttributesAsString();
return name + ": " + a + (data == null ? "" : " (" + data + ")");
}
}
public static void main(String args[]) {
JFrame frame = new JFrame("VSX Test");
VSX parser = new VSX();
JTree tree = new JTree(parser.parse("bdd.xml"));
frame.getContentPane().add(new JScrollPane(tree));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 400);
frame.setVisible(true);
}
} |
parser un fichier xml
Répondre avec citation
Partager