CAS client 端平添初始化参数传到server端

CAS client 端添加初始化参数传到server端
1. 修改client 端web应用的web.xml，如下：

<filter><filter-name>CAS Authentication Filter</filter-name><filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class><init-param><param-name>casServerLoginUrl</param-name><!-- CAS服务端地址--><param-value>http://192.168.104.123:8080/cas/login</param-value></init-param><init-param><param-name>service</param-name><!-- 本地地址--><param-value>http://192.168.104.101:8080/*</param-value></init-param><init-param><param-name>renew</param-name><param-value>false</param-value><!-- 这个如果为true 每次登录子系统都要验证，就不能实现登陆一次，可以访问其他子系统的需求 --></init-param><init-param><param-name>webRootKey</param-name><param-value>test</param-value></init-param></filter>

其中webRootKey参数为client添加的初始化参数，想传到server端

2. 修改org.jasig.cas.client.authentication.AuthenticationFilter.java如下：
添加属性webRootKey

/** * the web app root key */private String webRootKey;

，
提供set方法

public final  void setWebRootKey(final String webRootKey){    this.webRootKey = webRootKey;    }

修改initInternal方法，添加

setWebRootKey(getPropertyFromInitParams(filterConfig, "webRootKey", null));            log.trace("Loaded WebRootKey parameter: " + this.webRootKey);

修改init方法，添加

 CommonUtils.assertNotNull(this.webRootKey, "webRootKey cannot be null.");

3 自定义Credentials类继承UsernamePasswordCredentials，内容如下：

private static final long serialVersionUID = 179318697348051866L;        /** the web root key */    private String webRootKey;public String getWebRootKey() {return webRootKey;}public void setWebRootKey(String webRootKey) {this.webRootKey = webRootKey;}

4 修改自定义验证类（继承 AbstractJdbcUsernamePasswordAuthenticationHandler）的authenticateUsernamePasswordInternal方法如下：

FinalUserCredentials finalUserCredentials = (FinalUserCredentials) credentials;String username = finalUserCredentials.getUsername();String password = finalUserCredentials.getPassword();/** get web root key */String webRootKey = finalUserCredentials.getWebRootKey();

既可以获得webRootKey扩展参数。

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