java正则表达式

Posted 2020-09-18 秦水坡

Pattern p = Pattern.compile("\\(\\‘[\\w | / | : | . | ? | & | _ | % | = ]*\\‘\\)");
        Matcher m = p.matcher("<script>location.replace(‘https://login.10086.cn/AddUID.action?channelID=00791&backUrl=http%3A%2F%2Fservice.jx.10086.cn%3A80%2Fservice%2FbackAction.action%3Fmenuid%3D000200010003%26SAMLart%3D021c3b40cac0451da521b81e1f4a27d0_15279252432%26RelayState%3Dtype%3DA%3Bbackurl%3Dhttp%3A%2F%2Fservice.jx.10086.cn%3A80%2Fservice%2FbackAction.action%3Fmenuid%3D000200010003%3Bnl%3D6%26isEncodePassword%3D1%26displayPic%3D1%26displayPics%3Dnull%26isEncodeMobile%3D1&Artifact=2a47789396a74882b70ac2ea9b06e1f4&TransactionID=942153683‘);</script>"); 
//        Matcher m = p.matcher("<script>location.replace(‘sdfdsf/:.?‘)");
        System.out.println(m.groupCount());
        if(m.find()){
            System.out.println(m.group(0));
        }else{
            System.out.println("no");
        }

 \\（ 表示转译 （

其实正则表达式其实就相当于写if else 判断  把所有的卡头中间，所有的情况都写进入

个人感觉正则表达式写的好不好，完全在于对匹配的内容的认识是否全面。