TZ_10_常用的2中加密算法MD5，spring-sucrity

1.MD5

　　在注册时需要进行加密，在登陆时也需要加密进行配对

public class MD5util {

        public static String stringToMD5(String psd) {
            byte[] secretBytes = null;
            try {
                secretBytes = MessageDigest.getInstance("md5").digest(
                        psd.getBytes());
            } catch (NoSuchAlgorithmException e) {
                throw new RuntimeException("没有这个md5算法！");
            }
            String md5code = new BigInteger(1, secretBytes).toString(16);
            for (int i = 0; i < 32 - md5code.length(); i++) {
                md5code = "0" + md5code;
            }
            return md5code;
        }

2.spring-sucrity

　　在注册时需要加密 在登陆时通过自定义spring-scurity进行解密

public class BCryptPasswordEncoderUtils {
    private static BCryptPasswordEncoder bCryptPasswordEncoder = new BCryptPasswordEncoder();

    public static String encodePassword(String password) {
        return bCryptPasswordEncoder.encode(password);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:security="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/security
    http://www.springframework.org/schema/security/spring-security.xsd">

    <!-- 配置不拦截的资源 -->
    <security:http pattern="/login.jsp" security="none"/>
    <security:http pattern="/failer.jsp" security="none"/>
    <security:http pattern="/css/**" security="none"/>
    <security:http pattern="/img/**" security="none"/>
    <security:http pattern="/plugins/**" security="none"/>
    <!--
        配置具体的规则
        auto-config="true"    不用自己编写登录的页面，框架提供默认登录页面
        use-expressions="false"    是否使用SPEL表达式（没学习过）
    -->
    <security:http auto-config="true" use-expressions="false">
        <!-- 配置具体的拦截的规则 pattern="请求路径的规则" access="访问系统的人，必须有ROLE_USER的角色" -->
        <security:intercept-url pattern="/**" access="ROLE_USER,ROLE_ADMIN"/>

        <!-- 定义跳转的具体的页面 -->
        <security:form-login
                login-page="/WEB-INF/pages/login.jsp"
                login-processing-url="/login"
                default-target-url="/index.jsp"
                authentication-failure-url="/failer.jsp"
                authentication-success-forward-url="/WEB-INF/pages/main.jsp"
        />

        <!-- 关闭跨域请求 -->
        <security:csrf disabled="true"/>
        <!-- 退出 -->
        <security:logout invalidate-session="true" logout-url="/logout" logout-success-url="/login.jsp" />

    </security:http>

    <!-- 切换成数据库中的用户名和密码 -->
    <security:authentication-manager>
        <security:authentication-provider user-service-ref="userService">
            <!-- 配置加密的方式-->
            <security:password-encoder ref="passwordEncoder"/>
        </security:authentication-provider>
    </security:authentication-manager>

    <!-- 配置加密类 -->
    <bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>

    <!-- 提供了入门的方式，在内存中存入用户名和密码
    <security:authentication-manager>
        <security:authentication-provider>
            <security:user-service>
                <security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
            </security:user-service>
        </security:authentication-provider>
    </security:authentication-manager>
    -->

</beans>