CAS3.1 跳转提示错误 HTTP Status 401 - Authentication Failed: No principal was found in

wrong1111 2015-01-10 05:47:05

客户端应用
DEBUG信息如下



[org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:152)] Authentication attempt using org.springframework.security.cas.authentication.CasAuthenticationProvider

[DEBUG] 2015-01-10 17:34:32 [org.springframework.security.cas.authentication.CasAuthenticationProvider.getServiceUrl(CasAuthenticationProvider.java:171)] serviceUrl = https://admin.wgou.cn:7012/j_spring_cas_security_check

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.constructValidationUrl(AbstractUrlBasedTicketValidator.java:95)] Placing URL parameters in map.

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.constructValidationUrl(AbstractUrlBasedTicketValidator.java:103)] Calling template URL attribute map.

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.constructValidationUrl(AbstractUrlBasedTicketValidator.java:106)] Loading custom parameters from configuration.

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:182)] Constructing validation url: https://admincas.wgou.cn:8080/cas/serviceValidate?ticket=ST-1-4BL3pVhxg6mSQjNGpLLr-admincas.wgou.cn&service=https%3A%2F%2Fadmin.wgou.cn%3A7012%2Fj_spring_cas_security_check

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:186)] Retrieving response from server.

[DEBUG] 2015-01-10 17:34:32 [org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:194)] Server response: 

省略登录页面的HTML代码....

[ERROR] 2015-01-10 17:34:32 [org.jasig.cas.client.util.XmlUtils.getTextForElement(XmlUtils.java:152)] org.xml.sax.SAXParseException: Comment must start with "<!--".

org.xml.sax.SAXParseException: Comment must start with "<!--".

	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)

	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:174)

	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:388)

	at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1427)

以上的错误日志，虽然知道是因为服务器reponse的文本信息中包含有SAX解析不了的字符。但问题是原因是什么引起的呢？？
有知道的吗？
请指教教。。

客户端 web.xml 配置
<listener>
<listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
</listener>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

...全文