java web指定主页

正常情况下主页是在web.xml里面配置欢迎页面，可以加个过滤器重定向就可以：

public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;

        String effectivePath = request.getRequestURI().substring(request.getContextPath().length());
        if (effectivePath.equals("/")) {
                //访问项目的根路径
            response.sendRedirect("/destination.jsp");
            return;
        }

        chain.doFilter(request, response);
    }