request.getSession().getServletContext().getRequestDispatcher("/expot").forward(request,response);这句话的意思是什么?

来源：学生作业帮助网编辑：作业帮时间：2024/11/16 06:28:36

request.getSession().getServletContext().getRequestDispatcher("/expot").forward(request,response);这句话的意思是什么?
request.getSession().getServletContext().getRequestDispatcher("/expot").forward(request,response);
这句话的意思是什么?

request.getSession().getServletContext().getRequestDispatcher("/expot").forward(request,response);这句话的意思是什么?
RequestDispatcher---->实现Servlet之间的请求传递（页面跳转）,有以下两种方式(都有共享request和response):
1.forward(ServletRequest, ServletResponse) //跳转到其他资源
2.include(ServletRequest, ServletResponse) //包含其他资源
如何获得RequestDispatcher对象
1) request.getRequestDispatcher(String page) ---->相对路径或者绝对路径
2) ServletContext.getRequestDispather(String page) ---->绝对路径
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页面跳转另一种方式：response.sendRedirect(
望采纳!

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