我进入系统界面后，输入用户名和登录密码后，点击进入，界面就显示错误，我是初学者，请帮忙看看到底是哪里除了问题，谢谢
HTTP Status 500 - 

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type Exception report

message 

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

javax.servlet.ServletException: org.hibernate.exception.JDBCConnectionException: Cannot open connection
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause 

org.hibernate.exception.JDBCConnectionException: Cannot open connection
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:119)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326)
com.bOS.bPRO_PersonManage.service.UsersDao.logonUsers(UsersDao.java:74)
com.bOS.bPRO_PersonManage.action.UsersAction.logon(UsersAction.java:100)
com.bOS.bPRO_PersonManage.action.UsersAction.execute(UsersAction.java:30)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause 

java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket.
com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
com.microsoft.jdbc.sqlserver.tds.TDSConnection.<init>(Unknown Source)
com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Source)
com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source)
com.microsoft.jdbc.base.BaseConnection.open(Unknown Source)
com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:154)
org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:119)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326)
com.bOS.bPRO_PersonManage.service.UsersDao.logonUsers(UsersDao.java:74)
com.bOS.bPRO_PersonManage.action.UsersAction.logon(UsersAction.java:100)
com.bOS.bPRO_PersonManage.action.UsersAction.execute(UsersAction.java:30)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.10 logs.


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Apache Tomcat/6.0.10