我有一个大学项目的web应用程序(使用Hibernate,我无法避免,因为这是考试的重点之一),其中我需要登录功能。
在我用Jmeter (基本是http get e post in the login)运行了一些测试之后,我发现在测试了20次之后,webapp停止工作,返回了这样的消息: bean userList not found in scope基本上我需要重启Mysql才能让应用程序再次工作。
这是登录功能的代码:
<jsp:root version="2.0" xmlns:jsp="http://java.sun.com/JSP/Page"
我正在尝试使用jsp设计一个简单的登录系统。在登录页面中,用户输入他的用户名和密码,在验证时执行
if username and password combination exists, then
{
HttpSession session = request.getSession(false);
if (session == null) {
// Session not created yet. So we do it now.
session = request.getSession();
sessi
我在努力让会话复制工作..。我们有两个节点,我在node1上启动下面的JSP代码,然后看着计数器上升。然后,我关闭节点,我会认为计数器仍然有权利和工作的node2。我们确实被转移到了node2,但是它启动了一个新的会话。
下面是JSP代码:
<% /*
This is an example that shows sessions in use within a JSP.
It's the simplest possible demo - a visit counter, but a
counter for the number of times that the current
如下所述,我对代码进行了更改,如下所示,但它在JSP中不显示名字和姓氏:
Servlet代码:
//....
HttpSession session = request.getSession();
Person person = (Person) session.getAttribute("person");
if (person == null) {
person = new Person();
}
person.setNewId(newId);
person.setFirstName(firstName);
person.
我正在尝试使用loggedIn字符串对象作为标志。当我在日志中打印它时,为什么它返回一个空值?
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String loggedIn = "false"; //create a marker to tell if the user is logged in
String url = "/
我想在两个jsp页面之间传递一个字符串(用户名),
Login.jsp和Details.jsp。
请告诉我怎么做?
I tries this in Login.Jsp
<html>
......
<%
session.setAttribute("key","value");
%>
.....
</html>
In Details.jsp
<html>
......
<%
session.getAttribute("key");
%>
.....
</html>
It
我在logout.jsp中遇到了这样的错误
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 2 in the jsp file: /logout.jsp
session cannot be resolved
1: <%@ page language="java" session="false" %>
2: <%session.invalidate();%>
3: <%
这是我收到的错误,
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 13 in the jsp file: /index.jsp
Cannot cast from Object to boolean
这是我的代码:
控制器Servlet
if(authentication.verifyCredentials(request.getParameter("username"),
request.getParamet