JDOM 读取 解析 批改 删除 XML文件

JDOM 读取 解析 修改 删除 XML文件

1. package?com.itheima.xml;??
2. ??
3. import?java.io.File;??
4. import?java.io.FileWriter;??
5. import?java.util.Iterator;??
6. import?java.util.List;??
7. ??
8. import?org.jdom.Attribute;??
9. import?org.jdom.Document;??
10. import?org.jdom.Element;??
11. import?org.jdom.input.SAXBuilder;??
12. import?org.jdom.output.Format;??
13. import?org.jdom.output.XMLOutputter;??
14. ??
15. public?class?TextJDOMparseXML?{//操作使用JDOM解析XML文件的类??
16. ??
17. ????/**?
18. ?????*?@param?args?
19. ?????*/??
20. ????public?static?void?main(String[]?args)?{??
21. ????????//?TODO?Auto-generated?method?stub??
22. ????????String?fileName="F:/test1.xml";??
23. ????????TextJDOMparseXML?jdomXml=new?TextJDOMparseXML();??
24. ????????System.out.println("===============1.运用jdom创建XML文件");??
25. ????????if(jdomXml.createXMLFile(fileName,?"GB2312")==1)??
26. ????????????System.out.println("运用JDOM创建XML文件成功！");??
27. ????????else??
28. ????????????System.out.println("运用JDOM创建XML文件失败!");??
29. ????????System.out.println("===============2.运用JDOM读取XML文件");??
30. ????????jdomXml.read(jdomXml.getDocument(fileName));??
31. ????????System.out.println("===============3.修改XML内容，输出修改后的文档");??
32. ????????jdomXml.update(fileName,?"rongshu",?"liushu");??
33. ????????System.out.println("===============4.删除编号为002的节点,输出修改后的文件");??
34. ????????jdomXml.delete(fileName,?"002");??
35. ??????????
36. ????}??
37. ??????
38. ????//生成一个新的Document????
39. ????public?Document?createDocument(){??
40. ????????Document?document=new?Document();??
41. ????????return?document;??
42. ????}??
43. ????//创建一个节点??
44. ????public?Element?createElement(String?paramName,String?paramValue){??
45. ????????Element?element=new?Element(paramName);??
46. ????????element.setText(formatTextForXML(paramValue));??
47. ????????return?element;??
48. ????}??
49. ????//创建?XML文件??
50. ????public?int?createXMLFile(String?fileName,String?encoding){??
51. ????????int?returnValue=0;??
52. ????????Document?document=createDocument();??
53. ????????Element?treesElement=createElement("trees",?null);??
54. ????????Element?treeElement=new?Element("tree");??
55. ????????treeElement.setAttribute("id","001");??
56. ????????treeElement.setAttribute("name","rongshu");??
57. ??????????
58. ????????Element?typeElement=new?Element("type");??
59. ????????typeElement.setText("style");??
60. ????????typeElement.setAttribute("id","xiaoshu");??
61. ????????treeElement.addContent(typeElement);??//添加?子节点??
62. ??????????
63. ??????????
64. ????????Element?descElement=new?Element("description");??
65. ????????descElement.setText(formatTextForXML("It?is?a?big?tree"));??
66. ????????treeElement.addContent(descElement);??
67. ??????????
68. ????????treesElement.addContent(treeElement);??
69. ??????????
70. ????????Element?tree1Element=new?Element("tree");??
71. ????????tree1Element.setAttribute("id","002");??
72. ????????tree1Element.setAttribute("name","yangshu");??
73. ????????Element?type1Element=new?Element("type");??
74. ????????type1Element.setText("style");??
75. ????????type1Element.setAttribute("id","dashu");??
76. ????????tree1Element.addContent(type1Element);??
77. ????????Element?desc1Element=new?Element("description");??
78. ????????desc1Element.setText(formatTextForXML("The?tree?grows?taller?from?day?to?day"));??
79. ????????tree1Element.addContent(desc1Element);??
80. ????????treesElement.addContent(tree1Element);??
81. ??????????
82. ??????????
83. ????????Element?tree2Element=new?Element("tree");??
84. ????????tree2Element.setAttribute("id","003");??
85. ????????tree2Element.setAttribute("name","songshu");??
86. ????????Element?desc2Element=new?Element("description");??
87. ????????desc2Element.setText(formatTextForXML("The?tree?is?very?beautiful"));??
88. ????????tree2Element.addContent(desc2Element);??
89. ????????treesElement.addContent(tree2Element);??
90. ??????????
91. ????????Element?flowerElement=new?Element("flower");??
92. ????????flowerElement.setText("rose");??
93. ????????treesElement.addContent(flowerElement);??
94. ??????????
95. ????????document.addContent(treesElement);??
96. ????????try?{??
97. ????????????saveFile(fileName,document,encoding);??
98. ????????????returnValue=1;??
99. ????????}?catch?(Exception?e)?{??
100. ????????????//?TODO:?handle?exception??
101. ????????????System.out.println("创建XML文件失败:"+e.getMessage());??
102. ????????}??
103. ????????return?returnValue;??
104. ??????????
105. ????}??
106. ????//读取xml??
107. ????public?void?read(Document?document){??
108. ????????try?{??
109. ????????????Format?format=Format.getPrettyFormat();???
110. ????????????format.setEncoding("GB2312");??
111. ??????????????
112. ????????????XMLOutputter?xmlOutputter=new?XMLOutputter(format);??
113. ????????????xmlOutputter.output(document,?System.out);??
114. ????????}?catch?(Exception?e)?{??
115. ????????????System.out.println("读取XML文件失败："+e.getMessage());??
116. ????????}??
117. ????}??
118. ????//修改?xml文档节点??
119. ????public?int?update(String?fileName,String?oldName,String?newName){??
120. ????????int?returnValue=0;??
121. ????????Document?document=getDocument(fileName);??
122. ????????List?list=document.getRootElement().getChildren();??
123. ????????for?(int?i?=?0;?i?<?list.size();?i++)?{??
124. ????????????Element?element=(Element)list.get(i);??
125. ????????????Attribute?attribute=element.getAttribute("name");??
126. ????????????if(attribute!=null){??
127. ????????????????if(attribute.getValue().equals(oldName)){??
128. ????????????????????attribute.setValue(newName);??
129. ????????????????}??
130. ????????????}??
131. ????????}??
132. ??????????
133. ????????list=document.getRootElement().getChildren("flower");??
134. ????????Iterator?iter=list.iterator();??
135. ????????if(iter.hasNext()){??
136. ????????????Element?el=(Element)iter.next();??
137. ????????????el.setText("lily");??
138. ????????????Element?date=new?Element("date");??
139. ????????????date.setText("2009-04-10");??
140. ????????????date.setAttribute("type","calendar");??
141. ????????????el.addContent(date);??
142. ????????}??
143. ??????????
144. ????????try?{??
145. ????????????showFile(fileName,document);??
146. ????????????returnValue=1;??
147. ????????}?catch?(Exception?e)?{??
148. ????????????//?TODO:?handle?exception??
149. ????????????System.out.println("修改XML文件出错:"+e.getMessage());??
150. ????????}??
151. ??????????
152. ????????return?returnValue;??
153. ??????????
154. ??????????
155. ????}??
156. ????//删除XML?节点??
157. ????public?boolean?delete(String?fileName,String?id){??
158. ????????boolean?returnVlalue=false;??
159. ????????Document?doc=getDocument(fileName);??
160. ????????Element?root=doc.getRootElement();??
161. ????????List?list=root.getChildren("tree");??
162. ????????for?(int?i?=?0;?i?<?list.size();?i++)?{??
163. ????????????Element?element=(Element)list.get(i);??
164. ????????????if?(element.getAttribute("id").getValue().equals(id))?{??
165. ????????????????root.removeContent(element);??
166. ????????????}??
167. ????????}??
168. ????????try?{??
169. ????????????showFile(fileName,?doc);??
170. ????????????returnVlalue=true;??
171. ????????}?catch?(Exception?e)?{??
172. ????????????//?TODO:?handle?exception??
173. ????????????e.printStackTrace();??
174. ????????}??
175. ????????return?returnVlalue;??
176. ??????????????????
177. ????}??
178. ??????
179. ????private?void?showFile(String?fileName,?Document?document)?{??
180. ????????//?TODO?Auto-generated?method?stub??
181. ????????Format?format=Format.getPrettyFormat();??
182. ????????format.setEncoding("GB2312");??
183. ????????format.setIndent("　");??
184. ????????try?{??
185. ????????????XMLOutputter?xmlOutputter=new?XMLOutputter(format);??
186. ????????????FileWriter?fileWriter=new?FileWriter(fileName);??
187. ????????????xmlOutputter.output(document,?fileWriter);??
188. ????????????xmlOutputter.output(document,?System.out);??
189. ????????}?catch?(Exception?e)?{??
190. ????????????System.out.println("XML文件输出到控制台出错:"+e.getMessage());??
191. ????????}??
192. ????}??
193. ??
194. ????private?Document?getDocument(String?fileName)?{??
195. ????????//?TODO?Auto-generated?method?stub??
196. ????????Document?document=null;??
197. ????????try?{??
198. ????????????SAXBuilder?saxBuilder=new?SAXBuilder();??
199. ????????????document=saxBuilder.build(new?File(fileName));??
200. ????????}?catch?(Exception?e)?{??
201. ????????????//?TODO:?handle?exception??
202. ????????????System.out.println("载入失败:"+e.getMessage());??
203. ????????????return?null;??
204. ????????}??
205. ????????return?document;??
206. ????}??
207. ??
208. ????private?boolean?saveFile(String?fileName,?Document?document,?String?encoding)?{??
209. ????????//?TODO?Auto-generated?method?stub??
210. ????????Format?format=Format.getPrettyFormat();??
211. ????????if(encoding!=null){??
212. ????????????format.setEncoding(encoding);??
213. ????????}??
214. ????????format.setIndent("?");?//设置xml文件的缩进??
215. ????????try?{??
216. ????????????XMLOutputter?xmlOutputter=new?XMLOutputter(format);??
217. ????????????FileWriter?fileWriter=new?FileWriter(fileName);??
218. ????????????xmlOutputter.output(document,?fileWriter);??
219. ????????}?catch?(Exception?e)?{??
220. ????????????System.out.println("保存文件出错:"+e.getMessage());??
221. ????????????return?false;??
222. ????????}??
223. ????????return?true;??
224. ????}??
225. ??
226. ????private?String?formatTextForXML(String?sourceString)?{??
227. ????????//?TODO?Auto-generated?method?stub??
228. ????????if?(sourceString==null)?{??
229. ????????????return?null;??
230. ????????}??
231. ????????int?stLen=0;??
232. ????????StringBuffer?reString=?new?StringBuffer();??
233. ????????String?deString="";??
234. ????????stLen=sourceString.length();??
235. ????????for?(int?i?=?0;?i?<?stLen;?i++)?{??
236. ????????????char?ch=sourceString.charAt(i);??
237. ????????????switch?(ch)?{??
238. ????????????case?'<':??
239. ????????????????deString="<";??
240. ????????????????break;??
241. ????????????case?'>':??
242. ????????????????deString=">";??
243. ????????????????break;??
244. ????????????case?'"':??
245. ????????????????deString=""";??
246. ????????????????break;??
247. ????????????case?'&':??
248. ????????????????deString="&";??
249. ????????????????break;??
250. ????????????case?13:??
251. ????????????????deString="\n";??
252. ????????????????break;??
253. ????????????default:??
254. ????????????????deString=""+ch;??
255. ????????????????break;??
256. ????????????}??
257. ????????????reString.append(deString);??
258. ????????}??
259. ????????return?reString.toString();??
260. ????}?????
261. ??????
262. ??????
263. } ?