java 正则

1.验证email

String str = "zhanghm_@qq.com";
String pattern = "\\w+@(\\w+.)+[a-z]{2,3}";


Pattern r = Pattern.compile(pattern, Pattern.CASE_INSENSITIVE);
Matcher m = r.matcher(str);
if (m.find()) {
System.out.println(m.groupCount());
        }

2.搜索匹配字符串

String str = "var stype= aaaabbbb; var Src= 33 ; var src=22;xxxx var src=66;";
String pattern = "src=(.*?);";


Pattern r = Pattern.compile(pattern, Pattern.CASE_INSENSITIVE);
Matcher m = r.matcher(str);
while (m.find()) {
System.out.println(m.groupCount());
String rs = m.group(1);
System.out.println(rs);

        }