一、OAuth 配置
配置 OAuth 提供商
<bean id="weibo" class="com.buession.oauth.provider.impl.WeiboProvider"> <property name="key" value="the_key_for_weibo" /> <property name="secret" value="the_secret_for_weibo" /> </bean> <bean id="qq" class="com.buession.oauth.provider.impl.QqProvider"> <property name="key" value="the_key_for_qq" /> <property name="secret" value="the_secret_for_qq" /> </bean> ... ...提供商 OAuth 2.0 版本需继承类 org.scribe.up.provider.BaseOAuth20Provider
提供商 OAuth 1.0 版本需继承类 org.scribe.up.provider.BaseOAuth20Provider
所有的 OAuth Provider 必须定义在 WEB-INF/spring-configuration/applicationContext.xml 中OAuthConfiguration 配置（在 WEB-INF/spring-configuration/applicationContext.xml 添加）
二、OAuth Action 配置
在 WEB-INF/cas-servlet.xml 添加：
<bean id="oAuthAction" class="com.buession.cas.web.flow.OAuthAction"
p:configuration-ref="oAuthConfiguration"
p:centralAuthenticationService-ref="centralAuthenticationService" />
com.buession.cas.web.flow.OAuthAction 与 org.jasig.cas.support.oauth.web.flow.OAuthAction 的唯一区别就是：前者把 org.jasig.cas.support.oauth.authentication.principal.OAuthCredentials 注册到了 spring FlowScope 中，以便后续方便使用。
final Credentials credentials = new OAuthCredentials(credential);
flowScope.put(Constants.OAUTH_CREDENTIALS, credentials);
在 WEB-INF/login-webflow.xml 中添加：
<action-state id="oAuthAction">
<evaluate expression="oAuthAction" />
<transition on="success" to="sendTicketGrantingTicket" />
<transition on="error" to="ticketGrantingTicketExistsCheck" />
</action-state>
作用是 OAuth 身份验证后进行拦截来自供应商的 OAuth 回调
同时，此时会向页面注册“请求用户授权Token URL”的变量：驱动提供商 type+"Url"，即：$provider.getType()+"Url"，默认即为 Provider 的类名+"Url"，如：WeiboProviderUrl，这样在模板中即可通过：${WeiboProviderUrl} 形式的来生成“请求用户授权Token URL”的链接地址。
<a href="${QqProviderUrl}">QQ 登录</a>
<a href="${WeiboProviderUrl}">新浪微博登录</a>
三、OAuth 用户站内绑定
在大部分情况下，我们都需要把通过 OAuth 拿到的用户信息，如ID、昵称、头像、key 等存储一份到本地数据库，以方便使用。
这是需要修改：
<action-state id="oAuthAction">
<evaluate expression="oAuthAction" />
<transition on="success" to="oAuthBindCheckAction" />
<transition on="error" to="ticketGrantingTicketExistsCheck" />
</action-state>
在 WEB-INF/cas-servlet.xml 添加：
<!-- 验证 OAuth 用户是否已绑定 Action -->
<bean id="oAuthBindCheckAction" class="com.sso.web.flow.OAuthBindCheckAction"
p:configuration-ref="oAuthConfiguration"
p:jdbcTemplate-ref="slaveJdbcTemplate"
p:sql="SELECT count(0) FROM `members_bind` WHERE `type` = ? AND `key` = ? LIMIT 1" />
<!-- OAuth 用户绑定 Action -->
<bean id="oAuthBindAction" class="com.sso.web.flow.OAuthBindAction"
p:configuration-ref="oAuthConfiguration"
p:jdbcTemplate-ref="masterJdbcTemplate"
p:transactionManager-ref="masterTransactionManager"
p:passwordEncoder-ref="passwordEncoder" />
在 WEB-INF/login-webflow.xml 中添加：
<action-state id="oAuthBindCheckAction">
<evaluate expression="oAuthBindCheckAction" />
<transition on="success" to="sendTicketGrantingTicket" />
<transition on="error" to="oAuthBindAction" />
</action-state>
<action-state id="oAuthBindAction">
<evaluate expression="oAuthBindAction" />
<transition on="success" to="sendTicketGrantingTicket" />
<transition on="error" to="ticketGrantingTicketExistsCheck" />
</action-state>
OAuthBindCheckAction.java（验证 OAuth 用户是否绑定 Action）
public class OAuthBindCheckAction extends com.buession.cas.web.flow.OAuthBindJdbcCheckAction {
@Override
protected boolean valid(final OAuthProvider provider, final OAuthCredentials credentials) {
if (credentials == null) {
return false;
}
BaseOAuthProfile profile = (BaseOAuthProfile) credentials.getUserProfile();
if (profile == null) {
return false;
}
String providerName = provider.getType().replace("Provider", "").toLowerCase();
try {
return jdbcTemplate.queryForObject(sql, Integer.class, providerName,
profile.getId()) > 0;
} catch (final IncorrectResultSizeDataAccessException e) {
}
return false;
}
}
OAuthBindAction.java（OAuth 用户绑定 Action）
public class OAuthBindAction extends com.buession.cas.web.flow.OAuthBindAction {
@NotNull
private DataSourceTransactionManager transactionManager;
@NotNull
private PasswordEncoder passwordEncoder;
public DataSourceTransactionManager getTransactionManager() {
return transactionManager;
}
public void setTransactionManager(DataSourceTransactionManager transactionManager) {
this.transactionManager = transactionManager;
}
public PasswordEncoder getPasswordEncoder() {
return passwordEncoder;
}
public void setPasswordEncoder(PasswordEncoder passwordEncoder) {
this.passwordEncoder = passwordEncoder;
}
@Override
protected boolean bind(final HttpServletRequest request, final OAuthProvider provider,
final OAuthCredentials credentials) {
if (credentials == null) {
return false;
}
BaseOAuthProfile profile = (BaseOAuthProfile) credentials.getUserProfile();
if (profile == null) {
return false;
}
TransactionTemplate transactionTemplate = new TransactionTemplate(getTransactionManager());
return transactionTemplate.execute(new TransactionCallback<Boolean>() {
@Override
public Boolean doInTransaction(TransactionStatus status) {
BaseOAuthProfile profile = (BaseOAuthProfile) credentials.getUserProfile();
if (profile == null) {
return false;
}
... ...
return false;
}
});
}
}
在 WEB-INF/deployerConfigContext.xml 中添加
<bean id="authenticationManager" class="org.jasig.cas.authentication.AuthenticationManagerImpl">
<property name="authenticationMetaDataPopulators">
<list>
<!-- 如果想从 OAuth 获取用户信息，则需添加 -->
<bean class="com.buession.cas.oauth.authentication.OAuthAuthenticationMetaDataPopulator" />
<!-- 或者 -->
<bean class="org.jasig.cas.support.oauth.authentication.OAuthAuthenticationMetaDataPopulator" />
</list>
</property>
<property name="credentialsToPrincipalResolvers">
<list>
<!-- -->
<bean class="org.jasig.cas.support.oauth.authentication.principal.OAuthCredentialsToPrincipalResolver"
p:attributeRepository-ref="oAuthAttributeRepositoryDao" />
</list>
</property>
<property name="authenticationHandlers">
<list>
<!-- 使其 CAS 支持 OAuth 认证 -->
<bean class="org.jasig.cas.support.oauth.authentication.handler.support.OAuthAuthenticationHandler"
p:configuration-ref="oAuthConfiguration" />
</list>
</property>
</bean>
<!-- OAuth 登录成功后，查询本地用户数据 -->
<bean id="oAuthAttributeRepositoryDao" class="com.sso.persondir.OAuthSingleRowJdbcPersonAttributeDao">
<property name="jdbcTemplate" ref="slaveJdbcTemplate" />
<property name="queryTemplate" value="SELECT `m`.* FROM `members` AS `m`, `members_bind` AS `mb` WHERE `m`.`id` = `mb`.`members_id` AND `mb`.`type` = ? AND `mb`.`app_userid` = ? LIMIT 1" />
<property name="resultAttributeMapping">
<map>
<entry key="uid" value="id" />
<entry key="username" value="username" />
<entry key="email" value="email" />
... ...
</map>
</property>
</bean>
com.buession.cas.oauth.authentication.OAuthAuthenticationMetaDataPopulator 与 org.jasig.cas.support.oauth.authentication.OAuthAuthenticationMetaDataPopulator 的区别：前者能够将 OAuth 获取到的用户信息与本地查询到的用户信息合并，得到更加丰富完善的用户信息；否则就只能返回 OAuth 获取到的用户信息。
OAuthSingleRowJdbcPersonAttributeDao.java（）
public class OAuthSingleRowJdbcPersonAttributeDao extends com.buession.cas.service.persondir.support.jdbc.OAuthSingleRowJdbcPersonAttributeDao {
@Override
protected List<Map<String, Object>> query(ProviderId providerId) {
final ParameterizedRowMapper<Map<String, Object>> rowMapper = getRowMapper();
List<Map<String, Object>> results = null;
if (providerId != null) {
results = jdbcTemplate.query(queryTemplate, rowMapper, providerId.getProviderName(),
providerId.getId());
} else {
results = jdbcTemplate.query(queryTemplate, rowMapper);
}
return results;
}
/**
* @param uid
* @return ProviderId
*/
@Override
protected ProviderId convertAttributesMap(String uid) {
String[] temp = uid.split("#");
return temp.length >= 2 ? new ProviderId(temp[0].replace("Profile", "").toLowerCase(), temp[1]) : null;
}
}
使用 org.jasig.cas.support.oauth.authentication.OAuthAuthenticationMetaDataPopulator，所得结果，如图：
使用 com.buession.cas.oauth.authentication.OAuthAuthenticationMetaDataPopulator，所得结果，如图：
