1 package tw.com.javaworld.CH17;
2 
3 import java.io.*;
4 import java.util.*;
5 import javax.xml.parsers.*;
6 import org.xml.sax.*;
7 import org.xml.sax.helpers.*;
8 
9 public class MyHandler extends DefaultHandler {
10
11    private StringBuffer textBuffer;
12    private HashMap hm_TagData;
13    private String tagName;
14    
15    public MyHandler(HashMap hm_TagData) {
16        this.hm_TagData = hm_TagData;
17    } 
18    
19    //當SAX遇到xml字元時，會自動呼叫的方法
20    public void characters(char[] ch, int start, int len) {
21        String s = new String(ch, start, len);
22        if (textBuffer == null) {
23            textBuffer = new StringBuffer(s);
24        } else {
25            textBuffer.append(s);
26        }
27    }
28    public void startElement(String namespaceURI, String localName, String qName, Attributes atts) {
29
30        // 判斷重複的屬性名稱         
31        int count = 1;
32        echoText();
33        if (atts != null) {
34            for (int i = 0; i < atts.getLength(); i++) {
35                // 屬性名稱 
36                String aName = atts.getLocalName(i);
37                if ("".equals(aName))
38                    aName = atts.getQName(i);
39                while (hm_TagData.get(aName) != null) {
40                    aName = aName + count;
41                    count++;
42                }
43                hm_TagData.put(aName, atts.getValue(i));
44            }
45        }
46    }
47    public void endElement(String namespaceURI, String localName, String qName) {
48        String eName = localName;
49        // 標籤名稱         
50        if ("".equals(eName))
51            eName = qName;
52        // 當namespaceAware為false時                   
53        int count = 1;
54        while (hm_TagData.get(eName) != null) {
55            eName = eName + count;
56            count++;
57        }
58        hm_TagData.put(eName, textBuffer);
59        echoText();
60    }
61    private void echoText() {
62        if (textBuffer == null)
63            return;
64        String s = "" + textBuffer;
65        textBuffer = null;
66    }
67
68}
69