1 package com.chen.xpath;
2
3 import java.io.File;
4 import java.io.IOException;
5 import java.util.List;
6
7 import org.jdom.Document;
8 import org.jdom.Element;
9 import org.jdom.JDOMException;
10 import org.jdom.input.SAXBuilder;
11 import org.jdom.xpath.XPath;
12
13 public class TextXpath
14 {
15 private String pathString = "";
16 public TextXpath(String pathString){
17 this.pathString = pathString;
18
19 }
20
21 public void selectSome() throws JDOMException, IOException
22 {
23 File file = new File(pathString);
24 if (!file.exists())
25 {
26 System.out.println("文件不存在");
27 }
28 SAXBuilder sax = new SAXBuilder(false);
29 Document doc = sax.build(file);
30 Element rootElement = doc.getRootElement();
31 // List list = rootElement.getChildren();
32 // this.readXml(list);
33 // 查询绝对路径/metadata/MODULE/MODULE/OPERATE下的节点集合(包括根路径)
34 String xpathString = "/metadata/MODULE/MODULE/OPERATE";
35 List elist = XPath.selectNodes(rootElement, xpathString);
36 this.readXmlList(elist);
37 System.out.println("************************************************************");
38
39 // 查询所有节点名字为OPERATE的节点集合
40 String xpathStringA = "//OPERATE";
41 List elistA = XPath.selectNodes(rootElement, xpathStringA);
42 this.readXmlList(elistA);
43 System.out.println("************************A************************************");
44
45 // 查询所有节点名字为OPERATE中KEY="hr_chenYearAction_list"的节点集合
46 String xpathStringB = "//OPERATE[@KEY='hr_chenYearAction_list']";
47 List elistB = XPath.selectNodes(rootElement, xpathStringB);
48 this.readXmlList(elistB);
49 System.out.println("*************************B***********************************");
50
51 // 查询所有节点中KEY="hr_chenYearAction_list"的节点集合
52 String xpathStringC = "//*[@KEY='hr_chenYearAction_list']";
53 List elistC = XPath.selectNodes(rootElement, xpathStringC);
54 this.readXmlList(elistC);
55 System.out.println("*************************C***********************************");
56
57 // 使用 selectSingleNode 查询所有节点中 得到第一个节点 Element
58 String xpathStringD = "//MODULE/*";
59 Element element = (Element) XPath.selectSingleNode(rootElement, xpathStringD);
60 System.out.println(element.getAttributeValue("KEY").toString());
61 System.out.println(element.getTextNormalize());
62 // this.readXmlList(elistD);
63 System.out.println("***********************D*************************************");
64
65
66 /*
67 XPATH中一些有用的函数：
68 string concat (string, string, string*) 联接两个字符串
69 boolean starts-with (string, string) 判断某字符串是否以另一字符串开头
70 boolean contains (string, string) 判断某字符串是否包含另一字符串
71 string substring (string, number, number) 取子字符串
72 number string-length (string) 测字符串长度
73 number sum (node-set) 求和
74 number floor (number) 求小于此数的最大整数值
75 number ceiling (number) 求大于此数最小整数值
76 *
77 */
78 // 查询所有节点中KEY以hr_chenYearAction开头的节点集合
79 String xpathStringE = "//*[starts-with(@KEY,'hr_chenYearAction')]";
80 List elistE = XPath.selectNodes(rootElement, xpathStringE);
81 this.readXmlList(elistE);
82 System.out.println("*************************E***********************************");
83
84 }
85
86 /**打印结果
87 *
88 * @author chen_weixian
89 * May 4, 2012 10:53:39 AM
90 * @param list
91 */
92 public void readXmlList(List list)
93 {
94 for (int i = 0; i<list.size(); i++ )
95 {
96 Element el = (Element) list.get(i);
97 System.out.println(el.getAttributeValue("KEY"));
98 System.out.println(el.getAttributeValue("TITLE"));
99
100 }
101 }
102
103 public void readXml(List list)
104 {
105 for (int i = 0; i<list.size(); i++ )
106 {
107 Element el = (Element) list.get(i);
108 List listi = el.getChildren();
109 if (listi != null && listi.size() > 0)
110 {
111 readXml(listi);
112 }
113 else
114 {
115 System.out.println(el.getAttributeValue("KEY"));
116 System.out.println(el.getAttributeValue("TITLE"));
117 }
118
119 }
120 }
121
122 /**
123 * @author chen_weixian
124 * May 4, 2012 9:06:12 AM
125 * @param args
126 */
127 public static void main(String[] args)
128 {
129 String pathString = "F:/workspaceA/jzProject/config/resource_shop.xml";
130 TextXpath textXpath = new TextXpath(pathString);
131 try
132 {
133 textXpath.selectSome();
134 }
135 catch (JDOMException e)
136 {
137 // TODO Auto-generated catch block
138 e.printStackTrace();
139 }
140 catch (IOException e)
141 {
142 // TODO Auto-generated catch block
143 e.printStackTrace();
144 }
145 }
146
147 }
