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我在写一个servlet过滤器。我想添加错误并将响应发回到请求来自的页面。添加错误并将请求发送回请求页面servlet过滤器
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,我们可以重定向响应,
servletResponse.sendRedirect("/WebContent/Error.jsp");
请让我知道如何添加错误信息并发送请求回。
我想添加一些自定义错误消息。 "Validation failed. Please try again".
由于提前