springboot用户登陆密码两次md5加密

1.用户端:pass = md5(明文 + 固定salt)

2.服务端:pass = md5(用户输入 + 随机salt)

引入依赖包

<dependency>
            <groupid>commons-codec</groupid>
            <artifactid>commons-codec</artifactid>
        </dependency>
        <dependency>
            <groupid>org.apache.commons</groupid>
            <artifactid>commons-lang3</artifactid>
            <version>3.8.1</version>
        </dependency>