代码如下
package Game;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String[] args) throws IOException {
File file=new File("D:\\index.html");
BufferedReader buf=new BufferedReader(new InputStreamReader(new FileInputStream(file)));
String str=null;
String regex="(.)+@(.)+(\\.[a-z]+){1,}";
Pattern pattern=Pattern.compile(regex);
while((str=buf.readLine())!=null)
{
Matcher matcher=pattern.matcher(str);
while(matcher.find())
System.out.println(matcher.group());
}
buf.close();
}
}
详细说明：http://java.662p.com/thread-3731-1-1.html