从代码渲染jsp页面并将渲染的html输出作为字符串

Question

制作JSP页面渲染的最简单方法是什么，然后将渲染的html内容作为字符串？

Answer 1

There is this tutorial, which explains every step with code:

http://valotas.com/get-output-of-jsp-or-servlet-response/

Doing it this way has advantages when the JSP is not accessible by URL directly.

Answer 2

You should provide your own wrapper for the Writer of HttpServletResponse (via HttpServletResponseWrapper in a Filter ), and each time you write to that writer, also store in a StringBuilder .

That's just a sketch of the code, there is a sufficient number of examples, but the main steps are:

• create a filter
• wrap PrintWriter to make it store each write in a builder
• extend HttpServletResponseWrapper and make it return the writer wrapper
• create chain.doFilter(request, new HttpServletResponseWrapper(response))

Answer 3

使用java.net.URL和java.net.URLConnection类方法或JSTL <c:import/>