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DOM4J(2)

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2006年9月 (2)

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dom4j基本代碼

??1

package ?dom;
??2

??3

import ?java.io.File;
??4

import ?java.io.FileWriter;
??5

??6

import ?org.dom4j.Document;
??7

import ?org.dom4j.DocumentHelper;
??8

import ?org.dom4j.Element;
??9

import ?org.dom4j.Node;
?10

import ?org.dom4j.io.SAXReader;
?11

import ?org.dom4j.io.XMLWriter;
?12

?13

/**
?14

?*? @author ??~@_@
?15

? */
?16

public ? class ?Dom4jDemo? {
?17

???? /** ?XML文件路徑? */
?18

???? private ?String?XMLPath? = ? null ;
?19

?20

???? /** ?XML文檔? */
?21

???? private ?Document?document? = ? null ;
?22

?23

???? public ?Dom4jDemo()? {
?24

????}
?25

?26

???? /**
?27

?????*??初始化xml文件
?28

?????*?
?29

?????*? @param ?XMLPath?文件路徑
?30

????? */
?31

???? public ?Dom4jDemo(String?XMLPath)? {
?32

???????? this .XMLPath? = ?XMLPath;
?33

????}
?34

?35

???? /** ?*?打開文檔? */
?36

???? public ? void ?openXML()? {
?37

???????? try ? {
?38

????????????SAXReader?reader? = ? new ?SAXReader();
?39

???????????? this .document? = ?reader.read( this .XMLPath);
?40

????????????System.out.println( " openXML()?successful?

" );
?41

????????} ? catch ?(Exception?e)? {
?42

????????????System.out.println( " openXML()?Exception: " ? + ?e.getMessage());
?43

????????}
?44

????}
?45

?46

???? /**
?47

?????*??創建文檔
?48

?????*?
?49

?????*? @param ?rootName?根節點名稱
?50

????? */
?51

???? public ? void ?createXML(String?rootName)? {
?52

???????? try ? {
?53

???????????? this .document? = ?DocumentHelper.createDocument();
?54

????????????Element?root? = ?document.addElement(rootName);
?55

????????????System.out.println( " createXML()?successful

" );
?56

????????} ? catch ?(Exception?e)? {
?57

????????????System.out.println( " createXML()?Exception: " ? + ?e.getMessage());
?58

????????}
?59

????}
?60

?61

???? /**
?62

?????*??添加根節點的child
?63

?????*?
?64

?????*? @param ?nodeName?節點名
?65

?????*? @param ?nodeValue?節點值
?66

????? */
?67

???? public ? void ?addNodeFromRoot(String?nodeName,?String?nodeValue)? {
?68

????????Element?root? = ? this .document.getRootElement();
?69

????????Element?level1? = ?root.addElement(nodeName);
?70

????????level1.addText(nodeValue);
?71

????}
?72

?73

???? /**
?74

?????*??打開文檔
?75

?????*?
?76

?????*? @param ?filePath?文檔路徑
?77

????? */
?78

???? public ? void ?openXML(String?filePath)? {
?79

???????? try ? {
?80

????????????SAXReader?saxReader? = ? new ?SAXReader();
?81

???????????? this .document? = ?saxReader.read(filePath);
?82

????????????System.out.println( " openXML(String?filePath)?successful?

" );
?83

????????} ? catch ?(Exception?e)? {
?84

????????????System.out.println( " openXML()?Exception: " ? + ?e.getMessage());
?85

????????}
?86

????}
?87

?88

???? /** ?保存文檔? */
?89

???? public ? void ?saveXML()? {
?90

???????? try ? {
?91

????????????XMLWriter?output? = ? new ?XMLWriter( new ?FileWriter( new ?File(
?92

???????????????????? this .XMLPath)));
?93

????????????output.write(document);
?94

????????????output.close();
?95

????????????System.out.println( " saveXML()?successful?

" );
?96

????????} ? catch ?(Exception?e1)? {
?97

????????????System.out.println( " saveXML()?Exception: " ? + ?e1.getMessage());
?98

????????}
?99

????}
100

101

???? /**
102

?????*??保存文檔
103

?????*?
104

?????*? @param ?toFilePath?保存路徑
105

????? */
106

???? public ? void ?saveXML(String?toFilePath)? {
107

???????? try ? {
108

????????????XMLWriter?output? = ? new ?XMLWriter( new ?FileWriter(
109

???????????????????? new ?File(toFilePath)));
110

????????????output.write(document);
111

????????????output.close();
112

????????} ? catch ?(Exception?e1)? {
113

????????????System.out.println( " saveXML()?Exception: " ? + ?e1.getMessage());
114

????????}
115

????}
116

117

???? /**
118

?????*??獲得某個節點的值
119

?????*?
120

?????*? @param ?nodeName?節點名稱
121

????? */
122

???? public ?String?getElementValue(String?nodeName)? {
123

???????? try ? {
124

????????????Node?node? = ?document.selectSingleNode( " // " ? + ?nodeName);
125

???????????? return ?node.getText();
126

????????} ? catch ?(Exception?e1)? {
127

????????????System.out
128

????????????????????.println( " getElementValue()?Exception： " ? + ?e1.getMessage());
129

???????????? return ? null ;
130

????????}
131

????}
132

133

???? /**
134

?????*??獲得某個節點的子節點的值
135

?????*?
136

?????*? @param ?nodeName
137

?????*? @param ?childNodeName
138

?????*? @return
139

????? */
140

???? public ?String?getElementValue(String?nodeName,?String?childNodeName)? {
141

???????? try ? {
142

????????????Node?node? = ? this .document.selectSingleNode( " // " ? + ?nodeName? + ? " / "
143

???????????????????? + ?childNodeName);
144

???????????? return ?node.getText();
145

????????} ? catch ?(Exception?e1)? {
146

????????????System.out
147

????????????????????.println( " getElementValue()?Exception： " ? + ?e1.getMessage());
148

???????????? return ? null ;
149

????????}
150

????}
151

152

???? /**
153

?????*??設置一個節點的text
154

?????*?
155

?????*? @param ?nodeName?節點名
156

?????*? @param ?nodeValue?節點值
157

????? */
158

???? public ? void ?setElementValue(String?nodeName,?String?nodeValue)? {
159

???????? try ? {
160

????????????Node?node? = ? this .document.selectSingleNode( " // " ? + ?nodeName);
161

????????????node.setText(nodeValue);
162

????????} ? catch ?(Exception?e1)? {
163

????????????System.out
164

????????????????????.println( " setElementValue()?Exception: " ? + ?e1.getMessage());
165

????????}
166

????}
167

168

???? /**
169

?????*??設置一個節點值
170

?????*?
171

?????*? @param ?nodeName?父節點名
172

?????*? @param ?childNodeName?節點名
173

?????*? @param ?nodeValue?節點值
174

????? */
175

???? public ? void ?setElementValue(String?nodeName,?String?childNodeName,
176

????????????String?nodeValue)? {
177

???????? try ? {
178

????????????Node?node? = ? this .document.selectSingleNode( " // " ? + ?nodeName? + ? " / "
179

???????????????????? + ?childNodeName);
180

????????????node.setText(nodeValue);
181

????????} ? catch ?(Exception?e1)? {
182

????????????System.out
183

????????????????????.println( " setElementValue()?Exception: " ? + ?e1.getMessage());
184

????????}
185

????}
186

}

posted on 2006-09-20 15:45 Warren.Wu 閱讀(201) 評論(0) 編輯收藏所屬分類: DOM4J

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