java类中的重定向无法访问地址

Question

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

throws IOException, ServletException {

// TODO Auto-generated method stub

System.out.println("doFilter....start");

//chain.doFilter(request,  response);

HttpServletRequest req =(HttpServletRequest) request;

HttpServletResponse res = (HttpServletResponse)response;

//重定向

res.sendRedirect(req.getContextPath()+"/middle.jsp");

//转发

//req.getRequestDispatcher("main.jsp").forward(req, res);

System.out.println("doFilter....end");

}

用的火狐浏览器，一直说输入的没有找到此网站，错误信息http 404 ,所以我后面的error.jsp都完全不起作用的。。

Answer 1

输出req.getContextPath()+"/middle.jsp"看下，按照目录能否找到页面。