java - Freemarker getServletContext().getMimeType(filename)

Question

I am trying to get servlet context in Freemarker \ Spark and my getServletContext() is returning me null.

ServletContext servletContext = request.raw().getSession().getServletContext();
File titleImage = (File)post.get("titleimage");

resp.setHeader("Content-Type", servletContext.getMimeType(titleImage.getName()));   
resp.setHeader("Content-Length", String.valueOf(titleImage.length()));   
resp.setHeader("Content-Disposition", "inline; filename=\""+titleImage.getName()+"\""); 

Answer 1

代替

ServletContext servletContext = request.raw().getSession().getServletContext();

做这个：

ServletContext context = request.getSession().getServletContext();