如何使用XPath提取xml文档数据

如何使用XPath提取xml文档数据

本文实例为大家分享了XPath提取xml文档数据具体代码，供大家参考，具体内容如下

import java.util.List;

import org.dom4j.Document;

import org.dom4j.Node;

import org.dom4j.io.SAXReader;

import org.junit.Test;

/*

* 使用XPath查找xml文档数据

*

*/

public class http://DemoXPath {

@Test

//输出book.xml中所有price元素节点的文本值

public void test1() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

List extends Node> selectNodes = document.selectNodes("//price");

for(Node node : selectNodes) {

String text = node.getText();

System.out.println(text);

}

}

@Test

//输出book.xml中第二本书的price元素节点的文本值

public void test2() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

Node selectSingleNode = document.selectSingleNode("/bookshelf/book[2]/price");

String text = selectSingleNode.getText();

System.out.println(text);

}

@Test

//输出book.xml中第二本书和第三本书的author元素节点的文本值

public void test3() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

List extends Node> selectSingleNode = document.selectNodes("/bookshelf/book[position()>1]/author");

for (Node node : selectSingleNode) {

String text = node.getText();

System.out.println(text);

}

}

@Test

//输出book.xml中含有属性id的所有name的文本值

public void test4() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

List extends Node> selectSingleNode = document.selectNodes("//name[@id]");

for (Node node : selectSingleNode) {

String text = node.getText();

System.out.println(text);

}

}

@Test

//输出book.xml中含有属性id="1111"的name的文本值

public void test5() throws Exception {

SAXReader reader = new SAXReader();

SbHebOxRwf Document document = reader.read("src/main/java/book.xml");

Node selectSingleNode = document.selectSingleNode("//name[@id=\"1111\"]");

String text = selectSingleNode.getText();

System.out.println(text);

}

@Test

//输出book.xml中含有属性id="1112"的book的author的文本值

public void test6() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

Node selectSingleNode = document.selectSingleNode("//book[name[@id=\"1112\"]]/author");

String text = selectSingleNode.getText();

System.out.println(text);

}

@Test

//输出book.xml中第一本book的id的属性值

public void test7() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

Node selectSingleNode = document.selectSingleNode("//book[1]/name");

String text = selectSingleNode.valueOf("attribute::id");//获取id属性

System.out.println(text);

}

@Test

//输出book.xml中book的name的id的属性值为1112的对应的sn的属性值

public void test8() throws Exception {

SAXReader reader = new SAXReader();

Document document = reader.read("src/main/java/book.xml");

List extends Node> selectNodes = document.selectNodes("//book/name");

for (Node node : selectNodes) {

if(node.valueOf("attribute::id").equals("1112")) {

System.out.println(node.valueOf("attribute::sn"));

}

}

}

}

junit

junit

4.11

log4j

log4j

1.2.17

dom4j

dom4j

jaxen

jaxen

1.1.6

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