如何使用java?
使用jsoup解析网页中的文本?答案 0 :(得分:18)
来自jsoup cookbook:http://jsoup.org/cookbook/extracting-data/attributes-text-html
String html = "<p>An <a href='http://example.com/'><b>example</b></a> link.</p>";
Document doc = Jsoup.parse(html);
String text = doc.body().text(); // "An example link"
答案 1 :(得分:1)
使用属于JDK的类:
import java.io.*;
import java.net.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
class GetHTMLText
{
public static void main(String[] args)
throws Exception
{
EditorKit kit = new HTMLEditorKit();
Document doc = kit.createDefaultDocument();
// The Document class does not yet handle charset's properly.
doc.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
// Create a reader on the HTML content.
Reader rd = getReader(args[0]);
// Parse the HTML.
kit.read(rd, doc, 0);
// The HTML text is now stored in the document
System.out.println( doc.getText(0, doc.getLength()) );
}
// Returns a reader on the HTML data. If 'uri' begins
// with "http:", it's treated as a URL; otherwise,
// it's assumed to be a local filename.
static Reader getReader(String uri)
throws IOException
{
// Retrieve from Internet.
if (uri.startsWith("http:"))
{
URLConnection conn = new URL(uri).openConnection();
return new InputStreamReader(conn.getInputStream());
}
// Retrieve from file.
else
{
return new FileReader(uri);
}
}
}
答案 2 :(得分:0)
嗯,这是一个快速的方法,我把它扔在一起。它使用正则表达式来完成工作。大多数人都会认为这不是一个很好的方法。因此,使用风险自负。
public static String getPlainText(String html) {
String htmlBody = html.replaceAll("<hr>", ""); // one off for horizontal rule lines
String plainTextBody = htmlBody.replaceAll("<[^<>]+>([^<>]*)<[^<>]+>", "$1");
plainTextBody = plainTextBody.replaceAll("<br ?/>", "");
return decodeHtml(plainTextBody);
}
这最初用于我的Stack Overflow API的API包装器。因此,它仅在一小部分html标签下进行测试。