当你回首往事时，不因碌碌无为而悔恨，不为虚度年华而羞耻，那你就可以很骄傲地和自己讲，你不负此生!

今天分享一个密码的正则，密码必须包含大、小写字母、数字、特殊符号至少三种,且长度为8-20

|-----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 1 | hljs plaintext ^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-Z\W_!@#$%^&*`~()-+=]+$)(?![a-z0-9]+$)(?![a-z\W_!@#$%^&*`~()-+=]+$)(?![0-9\W_!@#$%^&*`~()-+=]+$)[a-zA-Z0-9\W_!@#$%^&*`~()-+=]{8,20}$ |

javascript代码

|---------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 1 2 3 | hljs javascript if (!(/^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-Z\W_!@#$%^&*`~()-+=]+$)(?![a-z0-9]+$)(?![a-z\W_!@#$%^&*`~()-+=]+$)(?![0-9\W_!@#$%^&*`~()-+=]+$)[a-zA-Z0-9\W_!@#$%^&*`~()-+=]{8,20}$/.test(value))) { return '密码必须包含大、小写字母、数字、特殊符号至少三种,且长度为8-20'; } |

java代码

|---------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 1 2 3 4 5 6 | hljs java String str = ""; String pattern = "^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-Z\\W_!@#$%^&*`~()-+=]+$)(?![a-z0-9]+$)(?![a-z\\W_!@#$%^&*`~()-+=]+$)(?![0-9\\W_!@#$%^&*`~()-+=]+$)[a-zA-Z0-9\\W_!@#$%^&*`~()-+=]{8,20}$"; Pattern r = Pattern.compile(pattern); Matcher m = r.matcher(str); System.out.println(m.matches()); |