当我尝试从维基百科解析时,我在控制台中得到了这个
Exception in thread "main" java.lang.IllegalArgumentException: usage: supply url to fetch
at org.jsoup.helper.Validate.isTrue(Validate.java:45)
at org.jsoup.examples.HtmlToPlainText.main(HtmlToPlainText.java:26)
这是我的java代码:
Document doc = Jsoup.connect("http://wikipedia.com/").get();
Elements newsHeadlines = doc.select("#mp-itn b a");
String news = newsHeadlines.toString();
system.out.println(news);