Java 添加错误并将请求发送回请求页面servlet筛选器
我正在编写一个servlet过滤器。我想添加错误并将响应发送回发出请求的页面Java 添加错误并将请求发送回请求页面servlet筛选器,java,servlets,servlet-filters,Java,Servlets,Servlet Filters,我正在编写一个servlet过滤器。我想添加错误并将响应发送回发出请求的页面 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { final HttpServletRequest servletRequest = (HttpServletRequest)re
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
final HttpServletRequest servletRequest = (HttpServletRequest)request;
final HttpServletResponse servletResponse = (HttpServletResponse) response;
//add error and redirect the request to previous page
chain.doFilter(request, response);
}
我知道我们可以将响应重定向为
servletResponse.sendRedirect("/WebContent/Error.jsp");
请让我知道如何添加错误消息并将请求发回
我想添加一些自定义错误消息。验证失败。请重试。
提前感谢服务响应。(?)