So I managed to configure spring security in my last article here but what do I do now. How do I create the login form, login.jsp for my users to authenticate from. I searched around and found a few articles but none that listed out the login page. Then I looked in the spring-security distribution and found a sample login.jsp there.
login.jsp:
<%@ taglib prefix='c' uri='http://java.sun.com/jstl/core_rt' %>
<%@ page import="org.springframework.security.ui.AbstractProcessingFilter" %>
<%@ page import="org.springframework.security.ui.webapp.AuthenticationProcessingFilter" %>
<%@ page import="org.springframework.security.AuthenticationException" %>
<html>
<head>
<title>Login</title>
</head>
<body>
<h1>Login</h1>
<c:if test="${not empty param.login_error}">
<font color="red">
Your login attempt was not successful, try again.<br/><br/>
Reason: <c:out value="${SPRING_SECURITY_LAST_EXCEPTION.message}"/>.
</font>
</c:if>
<form name="f" action="<c:url value='j_spring_security_check'/>" method="POST">
<table>
<tr><td>User:</td><td><input type='text' name='j_username' value='<c:if test="${not empty param.login_error}"><c:out value="${SPRING_SECURITY_LAST_USERNAME}"/></c:if>'/></td></tr>
<tr><td>Password:</td><td><input type='password' name='j_password'></td></tr>
<tr><td><input type="checkbox" name="_spring_security_remember_me"></td><td>Don't ask for my password for two weeks</td></tr>
<tr><td colspan='2'><input name="submit" type="submit"></td></tr>
<tr><td colspan='2'><input name="reset" type="reset"></td></tr>
</table>
</form>
</body>
</html>
The names of the fields MUST remain the same or else your authentication will fail.
As far as the logout goes, all you have to do is send the user to a particular servlet define by spring-security.
logout link:
<a href="<c:url value="/j_spring_security_logout"/>">Logout</a>
To bring your user to a particular page after logout defined logout-success-url element in your security context.
Thats it, your login and logout pages are good to go.
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Tags: Java, Spring, spring security, web security
[...] example February 7th, 2009 | Tags: dwr, Java, spring, spring dwr integration I have written another post listing how to construct your login and logout pages to work with spring-security. It’s [...]
[...] security February 8th, 2009 | Tags: Java, security, spring, spring security I have written another post listing how to construct your login and logout pages to work with spring-security. It’s [...]
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very nice post
thats nice..but i am confused where does this security layer resides ? is it above the jsp , servlets and y do we need it if we can log in and log out user by simple method ?
thanks very good information.
Hi all, can somebody aid please.
For what reason will not the hyperlinks at the top of the website webpage that post a comment work for me?
Appreciate it