cas-server配置数据库验证

创建一个MySQL数据库，新建一张users表，添加username和password字段

第七步、配置数据库认证

参考官方文档：https://apereo.github.io/cas/4.2.x/installation/Database-Authentication.html#database-components

首先拷贝MySQL驱动到cas-server-webapp项目的lib目录下

然后到下载的CAS源码的cas-server-support-jdbc目录下gradle build编译jdbc的支持jar包

编译好之后，同样到build》libs目录下拷贝cas-server-support-jdbc-4.2.7.jar包到cas-server-webapp项目的lib目录下

打开deployerConfigContext.xml配置文件

将<alias name="acceptUsersAuthenticationHandler" alias="primaryAuthenticationHandler" />这一行注释掉

加入

<alias name="queryDatabaseAuthenticationHandler" alias="primaryAuthenticationHandler" />
<alias name="dataSource" alias="queryDatabaseDataSource" />

<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource"
p:driverClass="${database.driverClass}"
p:jdbcUrl="${database.url}"
p:user="${database.user}"
p:password="${database.password}"
p:initialPoolSize="${database.pool.minSize}"
p:minPoolSize="${database.pool.minSize}"
p:maxPoolSize="${database.pool.maxSize}"
p:maxIdleTimeExcessConnections="${database.pool.maxIdleTime}"
p:checkoutTimeout="${database.pool.maxWait}"
p:acquireIncrement="${database.pool.acquireIncrement}"
p:acquireRetryAttempts="${database.pool.acquireRetryAttempts}"
p:acquireRetryDelay="${database.pool.acquireRetryDelay}"
p:idleConnectionTestPeriod="${database.pool.idleConnectionTestPeriod}"
p:preferredTestQuery="${database.pool.connectionHealthQuery}" />

，然后打开cas.properties,加入数据库的相关配置如下：（请修改为自己的数据库地址，用户名和密码）

# == Basic database connection pool configuration ==
database.driverClass=com.mysql.jdbc.Driver
database.url=jdbc:mysql://127.0.0.1:3306/sso_test?useUnicode=true&characterEncoding=UTF-8&
database.user=root
database.password=admin
database.pool.minSize=6
database.pool.maxSize=18

# Maximum amount of time to wait in ms for a connection to become
# available when the pool is exhausted
database.pool.maxWait=10000

# Amount of time in seconds after which idle connections
# in excess of minimum size are pruned.
database.pool.maxIdleTime=120

# Number of connections to obtain on pool exhaustion condition.
# The maximum pool size is always respected when acquiring
# new connections.
database.pool.acquireIncrement=6

# == Connection testing settings ==

# Period in s at which a health query will be issued on idle
# connections to determine connection liveliness.
database.pool.idleConnectionTestPeriod=30

# Query executed periodically to test health
database.pool.connectionHealthQuery=select 1

# == Database recovery settings ==

# Number of times to retry acquiring a _new_ connection
# when an error is encountered during acquisition.
database.pool.acquireRetryAttempts=5

# Amount of time in ms to wait between successive aquire retry attempts.
database.pool.acquireRetryDelay=2000

 对cas.propeities进行修改，去掉“cas.jdbc.authn.query.sql=”前的注释符，改为适合项目的语句，比如：

cas.jdbc.authn.query.sql=select password from sso_user where username=?

　　

4)   允许注销后可重定向（可选）

修改cas.propeities，去掉“cas.logout.followServiceRedirects=false”前的注释符，改为：

cas.logout.followServiceRedirects=true

5)   修改TGT为永不失效策略

修改deployerConfigContext.xml，注释掉原来的grantingTicketExpirationPolicy，修改为：

<!--<alias name="ticketGrantingTicketExpirationPolicy" alias="grantingTicketExpirationPolicy" />-->
<alias name="neverExpiresExpirationPolicy" alias="grantingTicketExpirationPolicy" />

然后重启tomcat,验证登录

 输入数据库的账号密码

 参考：https://www.cnblogs.com/wggj/p/7550361.html  和 https://www.cnblogs.com/jay763190097/p/6492005.html