Image Src for calling a Servlet

Question

I want to call a Servlet from img src. I have defined a Servlet class with name ImageProducerServlet and registered it in web.xml:

Answer 1

You need to prepend the context path. You preferably won't hardcode it as the context path is a server-controlled setting. You can obtain it from the HTTP request as follows:

<img src="#{request.contextPath}/imageProducerServlet" id="id"/>

An alternative is to use the HTML <base> tag and set it to the URL of the context root. This way every URL which doesn't start with / will be relative to it.

See also:

• How get the base URL?

Answer 2

Just say

<img src="imageProducerServlet" id="id"/>

or

<img src="/mycompany/imageProducerServlet" id="id"/>

Answer 3

If this is working:

http://localhost:7101/mycompany/imageproducerservlet

then you need your img tag to look like that:

<img src="/mycompany/imageProducerServlet" id="id"/>