java使用正则表达式判断

1. 判断手机号码是否合法

public boolean isValidMobileNumber(String mobileNumber) {
    String pattern = "^1[3-9]\\d{9}$";
    return mobileNumber.matches(pattern);
}

2. 判断邮箱地址是否合法

public boolean isValidEmail(String email) {
    String pattern = "^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\\.[a-zA-Z0-9_-]+)+$";
    return email.matches(pattern);
}

3. 判断身份证号码是否合法

public boolean isValidIdCardNumber(String idCardNumber) {
    String pattern = "^[1-9]\\d{5}(19|20)\\d{2}(0[1-9]|1[0-2])(0[1-9]|[1-2]\\d|3[0-1])\\d{3}[0-9Xx]$";
    return idCardNumber.matches(pattern);
}

4. 判断密码是否包含字母和数字，长度在6到16位之间

public boolean isValidPassword(String password) {
    String pattern = "^(?=.*[A-Za-z])(?=.*\\d)[A-Za-z\\d]{6,16}$";
    return password.matches(pattern);
}