我发现这个项目 https://code.google.com/p/idp4java依赖于 openId4Java
但是我在运行它时遇到了以下问题
HTTP Status 500 - org.openid4java.message.IndirectError cannot be cast to org.openid4java.message.AuthSuccess
type Exception report
message org.openid4java.message.IndirectError cannot be cast to org.openid4java.message.AuthSuccess
description The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.ClassCastException: org.openid4java.message.IndirectError cannot be cast to org.openid4java.message.AuthSuccess
net.vinant.idp4java.openid4javaImpl.OpenId4JavaProtocolImplementation.checkId(OpenId4JavaProtocolImplementation.java:245)
net.vinant.idp4java.openid4javaImpl.OpenId4JavaProtocolImplementation.handle(OpenId4JavaProtocolImplementation.java:105)
net.vinant.idp4java.EndpointServlet.doPost(EndpointServlet.java:43)
javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.52 logs.