客户端没有证书
org.jasig.cas.client.util.CommonUtils 2016-09-22 14:01:34,623 -- ERROR -- sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
通过拷贝服务端证书进行客户端导入来解决
cd /Java/jdk1.6.0_24
$ keytool -import -keystore jre/lib/security/cacerts -file keys/keystorecas.crt -alias mytomcatcas
服务端返回的内容带有中文信息
org.xml.sax.SAXParseException: The element type "cas:username" must be terminated by the matching end-tag "</cas:username>".
解决方法：
检查编码问题
注意：一定要添加到cas filter前面
