//?1.通過DocumentBuilderFactor創(chuàng)建解析工廠

DocumentBuilderFactory?builderFactory?=?DocumentBuilderFactory

.newInstance();

//?2.通過工廠獲得解析器

DocumentBuilder?builder?=?builderFactory.newDocumentBuilder();

//?3.通過parser方法獲取Document

Document?document?=?builder.parse("conf/books.xml");

//?4.獲取xpath對(duì)象

XPath?xpath?=?XPathFactory.newInstance().newXPath();

//?5.獲取bookstore節(jié)點(diǎn)下book屬性category值為web下的第二個(gè)title節(jié)點(diǎn)的文本內(nèi)容

String?exp?=?"/bookstore/book[@category='web'][2]/title/text()";

String?tit?=?(String)?xpath.evaluate(exp,?document,

XPathConstants.STRING);

System.out.println(tit);

//?獲取bookstore節(jié)點(diǎn)下book屬性category值為web的titile屬性為en的節(jié)點(diǎn)內(nèi)容

String?expEn?=?"/bookstore/book[@category='web']/title[@lang?='en']/text()";

String?titEN?=?(String)?xpath.evaluate(expEn,?document,

XPathConstants.STRING);

System.out.println(titEN);

//?獲取bookstore下book屬性category值為cooking的title的lang屬性的值

String?expLan?=?"/bookstore/book[@category='cooking']/title/@lang";

String?lang?=?(String)?xpath.evaluate(expLan,?document,

XPathConstants.STRING);

System.out.println(lang);

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