以下示例将在将HTML String解析为Document对象后展示选择器方法的使用. jsoup支持类似于CSS选择器的选择器.
Document document = Jsoup.parse(html);
Element sampleDiv = document.getElementById("sampleDiv");
Elements links = sampleDiv.getElementsByTag("a");其中
文件 : document对象代表HTML DOM.
Jsoup : 用于解析给定HTML字符串的主类.
html : HTML字符串.
sampleDiv : Element对象表示由id"sampleDiv"标识的html节点元素.
links : Elements对象表示由标签"a"标识的多个节点元素.
document.select(expression)方法解析给定的CSS选择器表达式以选择html dom元素.
使用任何创建以下java程序你选择的编辑说C:/> jsoup.
JsoupTester.java
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class JsoupTester {
public static void main(String[] args) {
String html = "<html><head><title>Sample Title</title></head>"
+ "<body>"
+ "<p>Sample Content</p>"
+ "<div id='sampleDiv'><a href='www.google.com'>Google</a>"
+ "<h3><a>Sample</a><h3>"
+"</div>"
+ "<div id='imageDiv' class='header'><img name='google' src='google.png' />"
+ "<img name='yahoo' src='yahoo.jpg' />"
+"</div>"
+"</body></html>";
Document document = Jsoup.parse(html);
//a with href
Elements links = document.select("a[href]");
for (Element link : links) {
System.out.println("Href: " + link.attr("href"));
System.out.println("Text: " + link.text());
}
// img with src ending .png
Elements pngs = document.select("img[src$=.png]");
for (Element png : pngs) {
System.out.println("Name: " + png.attr("name"));
}
// div with class=header
Element headerDiv = document.select("div.header").first();
System.out.println("Id: " + headerDiv.id());
// direct a after h3
Elements sampleLinks = document.select("h3 > a");
for (Element link : sampleLinks) {
System.out.println("Text: " + link.text());
}
}
}编译班级使用 javac 编译器如下:
C:\jsoup>javac JsoupTester.java
现在运行JsoupTester来查看结果.
C:\jsoup>java JsoupTester
查看结果.
Href: www.google.com Text: Google Name: google Id: imageDiv Text: Sample
