我同学用MyEclipse做的一个网站传来给我的，在他那边能运行。我导入到项目，数据库也附加了(SP4补丁)，tomcat也启动了，发布以后，进入页面没问题，但是只要是设计到数据库的页面，全都是空白的，网上查了需要修改xml什么的，我不会，希望大家能帮帮我，我是小白，没碰过网站编写移植发布之类的事~~大家别喷~~~·谢谢大家了
我运行网站首页没问题，进入登陆界面以后输入账号密码就出现这样的代码：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: java.lang.NullPointerException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
java.lang.NullPointerException
bean.SelectBean.select(SelectBean.java:55)
action.LoginAction.execute(LoginAction.java:61)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 52 in the jsp file: /vip_info.jsp
ÕË cannot be resolved
49: <table border="1& ......
