我们可以从img标签src调用servlet的doPost方法吗？

Question

i know it does not make any sense calling doPost method of servlet from img tag src:

  <img src='/ServletName' alt=''/>// i know it will call doGet or service method but i can't use these.

So is there any way calling doPost method from img tag of html and show image in img tag?

Actually my doPost method response type is :

  response.setContentType("image/jpeg");

also i cannot store image on disk of server.

Answer 1

So is there any way calling doPost method from img tag of html and show image in img tag?

No. That's just the contract of HTML <img> element. The webbrowser must download the image by a GET request on the URL as specified in src attribute.

Just do the image serving job in doGet() method instead. Even more, you can just rename doPost to doGet . The logic doesn't need to be changed at all.