All About Knows and Dont knows

In our previous tutorial , we showed how to create dynamic images images in a servlet. In this tutorial, we are going to take it a step further by dynamically adding a text watermark to an image as it is requested. Setting up the Servlet In the web.xml, you will need to configure a filter that will be used to call the servlet. By creating a filter, this will simplify the url used to access the servlet and image. To an end user, the filter will look like part of the directory structure for the image. The servlet will be invoked when the url contains the pattern /watermark/*. In our example, we will place the images in a directory called photos in the web application directory. To view the image without the watermark, you would use the url http://webserver/webapp/photos/car.jpg. To invoke the servlet, you would use the url http://webserver/webapp/watermark/photos/car.jpg. view plain copy to clipboard print ? servlet > servlet-name > com.codebeach.servlet.Wa...