Digerster类的API

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Digester解析xml到bean

XML C C++C#F#

参考网站：http://blog.csdn.net/fulianglove/archive/2008/07/09/2627472.aspx
01.
02.
03.
04.
05.<foo-catgory>
06.
07.<foo name="foo1" count="10">
08.
09.<bar id="1" title="The First Child"/>
10.
11.<bar id="2" title="The Second Child"/>
12.
13.</foo>
14.
15.
16.
17.<foo name="foo2" count="20">
18.
19.<bar id="3" title="foo2 The First Child"/>
20.
21.<bar id="4" title="f002 The Second Child"/>
22.
23.</foo>
24.
25.</foo-catgory>


<foo-catgory>

<foo name="foo1" count="10">

<bar id="1" title="The First Child"/>

<bar id="2" title="The Second Child"/>

</foo>

<foo name="foo2" count="20">

<bar id="3" title="foo2 The First Child"/>

<bar id="4" title="f002 The Second Child"/>

</foo>

</foo-catgory>view plaincopy to clipboardprint?
01.////**********************class Bar ****************
02.
03.package mypackage;
04.
05.
06.
07./**
08.
09.* Titleigester类的api进行xml解析的简单例子 
10.
11.*
12.
13.* Description:对应于xml中的<foo-catgory>下的<foo>下<bar>元素 
14.
15.*
16.
17.* Copyright: Copyright (c) 2005
18.
19.*
20.
21.* Company: 
22.
23.*
24.
25.* @author [email]wdz123@hotmail.com[/email]
26.
27.* @version 1.0
28.
29.*/
30.
31.public class Bar {
32.
33.private int id;
34.
35.private String title;
36.
37.public int getId() {
38.
39.return id;
40.
41.}
42.
43.public void setId(int id) {
44.
45.this.id = id;
46.
47.}
48.
49.public String getTitle() {
50.
51.return title;
52.
53.}
54.
55.public void setTitle(String title) {
56.
57.this.title = title;
58.
59.}
60.
61.private void prints(String s) {
62.
63.System.out.println(" " + s);
64.
65.}
66.
67.public void print(String s) {
68.
69.prints(s + "---Bar.id=" + id + ",Bar.title=" + title);
70.
71.}
72.
73.}
////**********************class Bar ****************

package mypackage;

/**

* Titleigester类的api进行xml解析的简单例子 

*

* Description:对应于xml中的<foo-catgory>下的<foo>下<bar>元素 

*

* Copyright: Copyright (c) 2005

*

* Company: 

*

* @author [email]wdz123@hotmail.com[/email]

* @version 1.0

*/

public class Bar {

private int id;

private String title;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

private void prints(String s) {

System.out.println(" " + s);

}

public void print(String s) {

prints(s + "---Bar.id=" + id + ",Bar.title=" + title);

}

}view plaincopy to clipboardprint?
01.//****** * class Foo 的代码 ************
02.
03.
04.
05.package mypackage;
06.
07.
08.
09.import java.util.*;
10.
11.
12.
13./**
14.
15.* Titleigester类的api进行xml解析的简单例子 
16.
17.*
18.
19.* Description:对应于xml中的<foo-catgory>下的<foo>元素 
20.
21.*
22.
23.* Copyright: Copyright (c) 2005
24.
25.*
26.
27.* Company: 
28.
29.*
30.
31.* @author [email]wdz123@hotmail.com[/email]
32.
33.* @version 1.0
34.
35.*/
36.
37.public class Foo {
38.
39.private HashMap list;
40.
41.private String name;
42.
43.private int count;
44.
45.public void addBar(Bar bar) {
46.
47.list.put(new Integer(bar.getId()), bar);
48.
49.}
50.
51.
52.
53.public Bar findBar(int id) {
54.
55.return (Bar) (list.get(new Integer(id)));
56.
57.}
58.
59.public Iterator getBars() {
60.
61.return
62.
63.list.keySet().iterator();
64.
65.}
66.
67.public String getName() {
68.
69.return name;
70.
71.}
72.
73.public int getCount() {
74.
75.return count;
76.
77.}
78.
79.public void setName(String n) {
80.
81.this.name = n;
82.
83.}
84.
85.public void setCount(int count) {
86.
87.this.count = count;
88.
89.}
90.
91.public Foo() {
92.
93.super();
94.
95.list = new HashMap();
96.
97.}
98.
99.
100.
101.public void print(){
102.
103.Iterator i = getBars();
104.
105.Bar b;
106.
107.int c = 0;
108.
109.while (i.hasNext()) {
110.
111.Integer ii = (Integer) i.next();
112.
113.b = findBar(ii.intValue());
114.
115.b.print(" Bar" + c++ +"---");
116.
117.}
118.
119.}
120.
121.}
122.<PRE class=java name="code">///*******************class FooCatgory 的代码 **************
123.
124.package mypackage;
125.
126.
127.
128.import java.util.LinkedList;
129.
130.import java.util.Iterator;
131.
132.
133.
134./**
135.
136.* Title: Digester类的api进行xml解析的简单例子
137.
138.*
139.
140.* Description: :对应于xml文件中的<foo-catgory>元素 
141.
142.*
143.
144.* Copyright: Copyright (c) 2005
145.
146.*
147.
148.* Company: 
149.
150.*
151.
152.* @author [email]wdz123@hotmail.com[/email]
153.
154.* @version 1.0
155.
156.*/
157.
158.public class FooCatgory {
159.
160.LinkedList list = new LinkedList();
161.
162.
163.
164.public void addFoo(Foo p) {
165.
166.list.addLast(p);
167.
168.}
169.
170.private void prints(String s) {
171.
172.System.out.println(" " + s);
173.
174.}
175.
176.
177.
178.public void print() {
179.
180.prints("FooCatgory has " + list.size() + " elements");
181.
182.int c = 0; //
183.
184.Foo f;
185.
186.for (Iterator i = list.iterator(); i.hasNext(); ) {
187.
188.f = (Foo) i.next();
189.
190.prints(" Foo" + c++ +"---" + "Foo.name=" + f.getName() + ",Foo.count=" +
191.
192.f.getCount());
193.
194.f.print();
195.
196.}
197.
198.}
199.
200.}</PRE>
201.<PRE class=java name="code"><PRE class=java name="code">*********** class ParseXmlFile 的代码 *******************
202.
203.
204.
205.package mypackage;
206.
207.
208.
209.import org.apache.commons.digester.*;
210.
211.
212.
213./**
214.
215.* Titleigester类的api进行xml解析的简单例子 
216.
217.*
218.
219.* Description: 使用Digester的api方法进行具体的解析xml文件，得到相应的java对象
220.
221.*
222.
223.* Copyright: Copyright (c) 2005
224.
225.*
226.
227.* Company: 
228.
229.*
230.
231.* @author [email]wdz123@hotmail.com[/email]
232.
233.* @version 1.0
234.
235.*/
236.
237.public class ParseXmlFile {
238.
239.public ParseXmlFile() {
240.
241.super();
242.
243.}
244.
245.
246.
247.private void parse(String sFileName) {
248.
249.Digester d = new Digester();
250.
251.//不进行XML与相应的DTD的合法性验证,如果设置=true,那应该有对应的dtd文件，并且在xml文件指出使用的dtd文件
252.
253.//digester.setValidating(false); //
254.
255.
256.
257.//创建根对象
258.
259.FooCatgory fooCatgory = new FooCatgory();
260.
261.
262.
263.//根对象进入对象栈（入栈，成为栈顶元素）
264.
265.d.push(fooCatgory);
266.
267.
268.
269.// 当遇到<foo>时创建一个mypackage.Foo对象，并且进入对象栈（入栈，成为栈顶元素）
270.
271.d.addObjectCreate("foo-catgory/foo", mypackage.Foo.class);
272.
273.
274.
275.// 根据<foo>元素的属性(attribute)，对刚才创建的Foo对象的属性(property)进行设置
276.
277.d.addSetProperties("foo-catgory/foo");
278.
279.
280.
281.//当再次遇到<foo>的子元素<bar>时创建一个mypackage.Bar对象，并将其放在栈顶，同时父元素(fooCatgory对象)的addFoo方法。
282.
283.d.addSetNext("foo-catgory/foo", "addFoo");
284.
285.
286.
287.// 当遇到<bar>时创建一个mypackage.Bar对象，并将其放在栈顶（入栈，成为栈顶元素）
288.
289.d.addObjectCreate("foo-catgory/foo/bar", mypackage.Bar.class);
290.
291.
292.
293.// 根据<bar>元素的属性(attribute)，对刚创建的Bar对象的属性(property)进行设置
294.
295.d.addSetProperties("foo-catgory/foo/bar");
296.
297.
298.
299.//当再次遇到<bar>时创建一个mypackage.Bar对象，并将其放在栈顶，同时调用父元素(Foo对象)的addBar方法。
300.
301.d.addSetNext("foo-catgory/foo/bar", "addBar", "mypackage.Bar");
302.
303.
304.
305.try {
306.
307.//开始解析Xml－－ foo.xml 该文件必须放到project根目录下，和目录src同级目录
308.
309.d.parse(sFileName);
310.
311.}
312.
313.catch (java.io.IOException ioe) {
314.
315.System.out.println("IOException reading input file:" + ioe.getMessage());
316.
317.System.exit( -1);
318.
319.}
320.
321.catch (org.xml.sax.SAXException se) {
322.
323.System.out.println("SAXException Error parsing input file:" +
324.
325.se.getMessage());
326.
327.System.exit( -1);
328.
329.}
330.
331.catch (Exception ex) {
332.
333.System.out.println("Exception parse error!" + ex.getMessage());
334.
335.}
336.
337.
338.
339.//打印xml文件解析的结果
340.
341.fooCatgory.print();
342.
343.}
344.
345.
346.
347.public static void main(String[] args) {
348.
349.ParseXmlFile p = new ParseXmlFile();
350.
351.p.parse("foo.xml");
352.
353.}
354.
355.}</PRE>
356.</PRE>

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