这个是这学期的作业，麻烦各位进来测试下，有什么好的建议各位提下，有什么BUG告诉我。谢了！
现在我放到公网上的，大家可以进。
http://220.163.66.27:8084/WebApplication/denglu.jsp
登录地址
默认用户w1,w2,w3,w4,w5,密码都是123
管理员的是 admin/123456

可以互相发送消息，文档，上传下载，

看了一下。。不錯。。我回去給你測試看看。。有Bug在告訴你

java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Invalid operation for the current cursor position.
    com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
    com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
    com.microsoft.jdbc.base.BaseResultSet.validateCursorPosition(Unknown Source)
    com.microsoft.jdbc.base.BaseResultSet.getString(Unknown Source)
    org.apache.jsp.userMains_jsp._jspService(userMains_jsp.java:390)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
    org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
    org.apache.jsp.userMain_jsp._jspService(userMain_jsp.java:283)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.

是不是太烂了。。。