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I have this servlet based web application project in eclipse and want to append some html tags like <script src="Chart.js">.
The folder structure is:
I have some path problems, and I can't resolve them, I searched over and over again and still not working, I get
a 404 (Not Found) for http://localhost:8080/CpdApplication/Chart.js.
The problem is when I want to append <script src='Chart.js'></script>, Tomcat cannot resolve the Chart.js static file.
209
I have some path problems, and I can't resolve them, I searched over and over again and still not working, I get a 404 (Not Found) for .../CpdApplication/Chart.js
Indeed, when writing <script src="/Chart.js"/> you are telling the browser to make its own, separate HTTP request to get the JavaScript file. For this to work:
This should do:
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/js/*</url-pattern>
</servlet-mapping>
Then place your Chart.js in the following folder: WebContent/js/ and it should work.
EDIT: Of course, you'll need to update the <script> tag in your HTML. Also, make sure that you redeploy your web app to update web.xml on your servlet container (Tomcat I presume).
135
This is works for me. Thanks 沖原ハーベスト
welcome.jsp
<head>
<script src="resources/js/jsx/browser.min.js"></script>
<script src="resources/js/react/react.min.js"></script>
<script src="resources/js/react/react-dom.min.js"></script>
<script src="resources/js/main.js"></script>
<link rel="stylesheet" type="text/css" href="resources/css/style.css">
</head>
File hierarchy tree
Web.xml
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/resources/*</url-pattern>
</servlet-mapping>
It seems to me like Chart.js is stored in the same folder with your servlet source.
Usually you should have a structure like this one (I have simplified it):
/css/your-css.css
/js/your-script.js
/src/your-package/YourServlet.java
Whenever you run your application, your compiler creates a set of files that will be copied to your web container. The copied files do not include your src folder, but instead a copy of your built (compiled) classes. All other files (with some exceptions that we should not care about right now) must be outside your src folder in order to get copied.
Try moving your JS inside a js directory outside your src directory. Then, link it like this:
<script src='/Your-Context-Path/js/Chart.js'>
There must be a function to get your context path automatically, I think it is
ServletContext.getContextPath()
You can read about it here.
That should make the trick.
35
As @Andy replied, you need to set all your resource (JS, CSS, images, etc.) in a folder in your application, then access to them using <context_path>/folder/to/your/resource/<resource_name>.<ext>. Here's a sample of how to do it:
This is how your application folders should look:
- WebContent
- res
- js
Chart.js
In your JSP:
<script src="${request.contextPath}/res/js/Chart.js"></script>
Since you're creating the view content from your Servlet (a shoot on the foot, by the way), use request#getContextPath() to attach it:
"script src=\"" + request#getContextPath() + "/res/js/Chart.js\"></script>";
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