I am new to Java. I have a HTML which has a show users button, on clicking this button I want to redirect the user to the users.jsp page. How do I achieve that? Will a function like this help?
function msg()
{
alert("List of Users");<br/>
jsp:forward page="Users.jsp"<br/>
}
=) first thing to learn: java != javascript
anyway, here's a nice function for you
function msg() {
alert("List of Users");
location.href = "users.jsp";
}
and the accompanying HTML
<button onclick="msg()">Click Me!</button>
good luck
===edit===
Full HTML page:
<html>
<head><title>Hi</title></head>
<body>
<script>
function msg() {
alert("List of Users");
location.href = "users.jsp";
}
</script>
<button onclick="msg()">Click Me!</button>
</body>
</html>
Essentially, if you print that ^ out in your servelet, you will get the desired result.
Java and JavaScript are two entirely distinct languages which runs each on its own environment. Java/JSP runs at the webserver machine, produces template text including HTML/CSS/JS and sends it over network to the client side as a HTTP response. Once arrived at the client machine, the webbrowser starts to display HTML, apply CSS and interpret/execute JS. If Java/JSP has done its job well, you should not see any line of Java/JSP code in the obtained HTML source (rightclick page > View Source).
The only way to let Java/JSP do something with JavaScript is to generate/print it accordingly that it get interpreted/executed in the client side the way you want. The only way to let JavaScript do something with Java/JSP code is to let it fire a HTTP request to an URL on which a JSP file or a Java Servlet listens and then exectues accordingly. You can fire a HTTP request with form.submit(), window.location and new XMLHttpRequest() (which is the base idea of Ajax).
In your particular case, you can just use window.location:
function msg() {
alert('List of Users');
window.location = 'Users.jsp';
}
or if this button is part of a <form>, then just specify it in the form action:
<form action="Users.jsp" onclick="msg()">
<input type="submit">
</form>
with
function msg() {
alert('List of Users');
}
To learn more about the wall between Java/JSP and JavaScript, you may find this article useful. As to learning Web Development in general, you may find this answer useful and for Java Web Development this answer.
If you are more comfortable with Java than Javascript, perhaps Google Web Toolkit would be a desirable option.
You cannot embed JSP in JavaScript, because JavaScript is ran by the browser, and browser does not implement JSP.
Try window.location = "Users.jsp"; in JavaScript.