String stUrl ="so.addVariable(\"file\", \"http://appsrv.xxx.com/flvget?r=0955/6955/movie0165_567_ama.flv\")";
    Pattern p = Pattern.compile("so.addVariable(\"file\", \"(.*?).flv");
    Matcher m = p.matcher(stUrl);
    if (m.find()) {
      System.out.println(m.group(1));
    }
    else {
      System.out.println("no");
    }怎么匹配不到呀还出异常