第六节：CAS服务端自定义数据库认证用户

/**
 * @see ------------------------------------------------------------------------------------------------------------------------
 * @see CAS服务端通过数据库认证用户
 * @see 实现方式有两种,一是自己写数据库获取用户名密码再认证的类,一是借助CAS-4.0.3自带的JDBC支持来实现认证,下面分别介绍
 * @see 【自己写认证类（推荐）】
 * @see 1.之前我们知道CSA-4.0.3的默认登录用户密码是配置在deployerConfigContext.xml,所以到deployerConfigContext.xml里面找
 * @see   找到<bean id="primaryAuthenticationHandler" class="org.jasig.cas.authentication.AcceptUsersAuthenticationHandler">
 * @see   我们在AcceptUsersAuthenticationHandler.java中发现CAS是把配置的用户密码读取到全局Map<String, String>中的
 * @see 2.而AcceptUsersAuthenticationHandler.java是通过继承AbstractUsernamePasswordAuthenticationHandler.java才实现的认证
 * @see   所以创建com.msxf.sso.authentication.UserAuthenticationHandler extends AbstractUsernamePasswordAuthenticationHandler
 * @see   然后重写authenticateUsernamePasswordInternal()方法,在里面获取到前台页面输入的用户密码,再到数据库中校验就行了
 * @see 3.接下来创建\WEB-INF\spring-configuration\applicationContext-datasource.xml,它会在启动时被自动加载(web.xml中设定的)
 * @see   在applicationContext-datasource.xml中配置数据库连接池,连接池的用户名密码等可以配置在\WEB-INF\cas.properties
 * @see   同时增加<context:component-scan base-package="com.msxf.sso"/>使得可以在自定义类中应用Spring注解
 * @see 4.新建一个UserDaoJdbc.java类,通过它利用Spring JDBC Template访问数据库
 * @see   因为要连接数据库,所以还要把druid-1.0.14.jar和mysql-connector-java-5.1.35.jar加入到lib目录中
 * @see 5.最后记得deployerConfigContext.xml把这段Bean配置给注释掉<bean id="primaryAuthenticationHandler">
 * @see   并在我们自定义的UserAuthenticationHandler.java中使用@Component(value="primaryAuthenticationHandler")声明其为Bean
 * @see   注意其名字应该是primaryAuthenticationHandler,因为deployerConfigContext.xml的其它配置引用了primaryAuthenticationHandler
 * @see   否则你还要找到引用了primaryAuthenticationHandler的位置修改为新的Bean
 * @see 【cas-server-support-jdbc-4.0.3.jar】
 * @see 1.这一种方式就简单一些了,先引入c3p0-0.9.1.2.jar和cas-server-support-jdbc-4.0.3.jar
 * @see 2.修改deployerConfigContext.xml,注释掉<bean id="primaryAuthenticationHandler">
 * @see   并增加<bean id="dataSource"><bean id="passwordEncoder"><bean id="mssoUsersAuthenticationHandler">(下方会贴出具体代码)
 * @see   同样这里也是从cas.properties读取的数据库连接用户密码
 * @see 3.由于在认证过程中是通过<bean id="authenticationManager">引用了<bean id="primaryAuthenticationHandler">来实现的
 * @see   所以修改这里的primaryAuthenticationHandler为我们新建的mssoUsersAuthenticationHandler
 * @see 4.通过查看org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationHandler源码会发现
 * @see   这种方式与上面自己写认证类的方式,原理是一样的,都是直接或间接的扩展AbstractUsernamePasswordAuthenticationHandler
 * @see
 * @create 2016-6-2
 * @author wangyf
 */

 

 

自定义的UserDaoJdbc.Java

package com.msxf.sso.authentication;

import javax.annotation.Resource;
import javax.sql.DataSource;

import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoJdbc {
    private static final String SQL_VERIFY_ACCOUNT = "SELECT COUNT(*) FROM permission_operator WHERE operator_login=? AND operator_pwd=SHA1(?)";

    private JdbcTemplate jdbcTemplate;

    @Resource
    public void setDataSource(DataSource dataSource){
        this.jdbcTemplate = new JdbcTemplate(dataSource);
    }

    /**
     * 验证用户名和密码是否正确
     * @create 2015-7-17 下午3:56:54
     * @author 玄玉<http://blog.csdn.net/jadyer>
     */
    public boolean verifyAccount(String username, String password){
        try{
            return 1==this.jdbcTemplate.queryForObject(SQL_VERIFY_ACCOUNT, new Object[]{username, password}, Integer.class);
        }catch(EmptyResultDataAccessException e){
            return false;
        }
    }
}

 

自定义的认证类UserAuthenticationHandler.java

 

package com.msxf.sso.authentication;

import java.security.GeneralSecurityException;

import javax.annotation.Resource;
import javax.security.auth.login.FailedLoginException;

import org.jasig.cas.authentication.HandlerResult;
import org.jasig.cas.authentication.PreventedException;
import org.jasig.cas.authentication.UsernamePasswordCredential;
import org.jasig.cas.authentication.handler.support.AbstractUsernamePasswordAuthenticationHandler;
import org.jasig.cas.authentication.principal.SimplePrincipal;
import org.springframework.stereotype.Component;

/**
 * 自定义的用户登录认证类
 * @create 2015-7-17 下午3:48:44
 * @author 玄玉<http://blog.csdn.net/jadyer>
 */
@Component(value="primaryAuthenticationHandler")
public class UserAuthenticationHandler extends AbstractUsernamePasswordAuthenticationHandler {
    @Resource
    private UserDaoJdbc userDaoJdbc;

    /**
     * 认证用户名和密码是否正确
     * @see UsernamePasswordCredential参数包含了前台页面输入的用户信息
     */
    @Override
    protected HandlerResult authenticateUsernamePasswordInternal(UsernamePasswordCredential transformedCredential) throws GeneralSecurityException, PreventedException {
        String username = transformedCredential.getUsername();
        String password = transformedCredential.getPassword();
        if(userDaoJdbc.verifyAccount(username, password)){
            return createHandlerResult(transformedCredential, new SimplePrincipal(username), null);
        }
        throw new FailedLoginException();
    }
}

 

 

创建的\WEB-INF\spring-configuration\applicationContext-datasource.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
                        http://www.springframework.org/schema/tx
                        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.2.xsd">
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="1"/>
        <property name="minIdle" value="1"/>
        <property name="maxActive" value="20"/>
        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="60000"/>
        <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>
        <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000"/>
        <property name="validationQuery" value="SELECT 'x'"/>
        <property name="testWhileIdle" value="true"/>
        <property name="testOnBorrow" value="false"/>
        <property name="testOnReturn" value="false"/>
        <!-- 打开PSCache,并且指定每个连接上PSCache的大小 -->
        <!-- PSCache(preparedStatement)对支持游标的数据库性能提升巨大,比如说Oracle/DB2/SQL Server,在mysql下建议关闭 -->
        <property name="poolPreparedStatements" value="false"/>
        <property name="maxPoolPreparedStatementPerConnectionSize" value="-1"/>
        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="wall,mergeStat"/>
    </bean>
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <tx:annotation-driven transaction-manager="txManager"/>

    <context:component-scan base-package="com.msxf.sso"/>
</beans>

 

在cas.properties中新添加的数据库元信息的配置

#数据库信息
jdbc.url=jdbc:mysql://localhost:3306/sso?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&autoReconnect=true&failOverReadOnly=false&maxReconnects=10
jdbc.username=root
jdbc.password=root

 

最后为deployerConfigContext.xml中的改动部分

 

<!-- 下面是采用cas-server-support-jdbc-4.0.3.jar实现数据库认证的Bean配置 -->
<!--
配置数据源、声明密码加密方式、指定用户名密码的认证器
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" p:driverClass="com.mysql.jdbc.Driver"
        p:jdbcUrl="${jdbc.url}" p:user="${jdbc.username}" p:password="${jdbc.password}"/>
<bean id="passwordEncoder" class="org.jasig.cas.authentication.handler.DefaultPasswordEncoder"
        c:encodingAlgorithm="SHA1" p:characterEncoding="UTF-8"/>
<bean id="mssoUsersAuthenticationHandler" class="org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationHandler"
        p:dataSource-ref="dataSource" p:passwordEncoder-ref="passwordEncoder"
        p:sql="SELECT operator_pwd FROM permission_operator WHERE operator_login=?"/>
 -->

<bean id="authenticationManager" class="org.jasig.cas.authentication.PolicyBasedAuthenticationManager">
    <constructor-arg>
        <map>
            <entry key-ref="proxyAuthenticationHandler" value-ref="proxyPrincipalResolver" />
            <entry key-ref="primaryAuthenticationHandler" value-ref="primaryPrincipalResolver" />
            <!-- 下面是采用cas-server-support-jdbc-4.0.3.jar实现数据库认证的Bean声明 -->
            <!--
            <entry key-ref="mssoUsersAuthenticationHandler" value-ref="primaryPrincipalResolver" />
             -->
        </map>
    </constructor-arg>
    <property name="authenticationPolicy">
        <bean class="org.jasig.cas.authentication.AnyAuthenticationPolicy" />
    </property>
</bean>

<!-- 取消默认的用户名和密码,改为我们自己从数据库查询的用户名和密码 -->
<!--
<bean id="primaryAuthenticationHandler" class="org.jasig.cas.authentication.AcceptUsersAuthenticationHandler">
    <property name="users">
        <map>
            <entry key="xuanyu" value="xuanyu"/>
        </map>
    </property>
</bean>
 -->

 

 

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