doLogin.jsp
<jsp:useBean?id="myUser"?class="lly.login.entity.User"?scope="session"?/>
<jsp:useBean?id="myUserDao"?class="lly.login.dao.UserDao"
scope="session"?/>
<jsp:setProperty?property="*"?name="myUser"?/>
<%
out.println("!");
boolean?flag?=?myUserDao.check(myUser);
out.println(flag);
if?(flag)?{
session.setAttribute("myUser",?myUser.getUsername());
request.getRequestDispatcher("login_success.jsp").forward(request,?response);
}?else?{
response.sendRedirect("login_failure.jsp");
}
%>login_success.jsp
<%
String?myUser?=?"";
if(session.getAttribute("myUser")!=null){
myUser?=(String)session.getAttribute("myUser");
}
%>
歡迎您：<font?color="red"><%=myUser?%></font>登陸成功！type?Exception?report
message?An?exception?occurred?processing?JSP?page?/doLogin.jsp?at?line?10
description?The?server?encountered?an?internal?error?that?prevented?it?from?fulfilling?this?request.
2016-09-06
你的名字起沖突了，session中有一個myUser的類了，你的session.setAttribute("myUser",?myUser.getUsername());又傳進去一個myUser字符
2016-09-06
明天問老師去。。