Question

java 提取字符串中包含所有的url， 正则表达式怎么写

就像新浪微博客户端那样，能分析出几条url

Answer 1

import java.net.URL;

public class MainClass {

public static void main(String[] args) {

String host = "www.java2s.com";
String file = "/index.html";

String[] schemes = {"http", "https", "ftp", "mailto", "telnet", "file", "ldap", "gopher",
"jdbc", "rmi", "jndi", "jar", "doc", "netdoc", "nfs", "verbatim", "finger", "daytime",
"systemresource"};

for (int i = 0; i < schemes.length; i++) {
try {
URL u = new URL(schemes[i], host, file);
System.out.println(schemes[i] + " is supported\r\n");
} catch (Exception ex) {
System.out.println(schemes[i] + " is not supported\r\n");
}
}
}
}

追问

前提是未知的url，我能取到这个url的开头，但是不知道怎么判断这个url是否已经结束