javascript - Java - SendRedirect 不从对话框重定向

Question

我有一个引导表单，通过单击 createTicketButton 按钮提交，它执行 jquery 调用

$('#createTicketButton').click(function(event) 
{
    $.ajax({
                processData : false,
                contentType : 'application/json',
                url : 'myUrl',
                "accept" : 'json',
                "dataType" : 'json',
                "type" : "POST",
                data : JSON.stringify(data),
                success : function(response) 
                {}
            });
});

最后，它传递给过滤器以确保 CSFR token 已传递并与服务器中存在的内容匹配

如果 token 不匹配，它应该重定向到登录页面这是问题重定向导致 500 错误(内部服务器错误)并且不重定向并且弹出窗口仍然显示任何帮助？

public class CsrfFilter implements Filter
{
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
    {
        boolean validToken = realToken.equals(requestToken);
        if (validToken)
        {
            chain.doFilter(request, response);
            return;
        }
        else
        {
            UriBuilder redirectUri = UriBuilder.fromUri("/login");
            try
            {
                String returnUrl = new URI(req.getHeader("referer")).getPath();
                redirectUri.queryParam("r", returnUrl);
            }
            catch (URISyntaxException | NullPointerException e)
            {
                // We don't need a return URL
            }
            res.sendRedirect(redirectUri.build().toString());
        }
    }
}

我的 HTML

    <th:block th:fragment="createTicketFormModal">
        <div id="createNewTicket" class="modal fade" role="dialog" aria-labelledby="myModalLabel" data-backdrop="static" aria-hidden="true" data-modal-index="1">
            <div class="modal-dialog">
                <div class="modal-content">
                    <div class="create-header modal-header">
                        <button class="close" type="button" data-dismiss="modal" aria-hidden="true">&times;</button>
                        <h4 id="edit-admin-modal" class="modal-title create-title">Create Ticket</h4>
                    </div>
                    <div class="modal-body">
                        <form id="create-ticket-form" class="create-form" method="POST" action="/cats/tickets/new">
                            <div class="alert alert-danger form-errors collapse"></div>

                       <!-- The form buttons -->
                                <input id="createTicketButton" class="btn btn-primary btn-block catsSubmit" type="button" value="Create Ticket" />
                                <button id="createTicketFormClearButton" class="btn btn-info btn-block" type="button">Clear</button>
                                <button class="btn btn-default btn-block" type="button" data-dismiss="modal">Close</button>
                                <input id="file-id" type="hidden" />

                        </form>
                    </div>
                </div>
            </div>
        </div>

    </th:block>

错误堆栈

java.lang.IllegalStateException: UT010019: Response already commited
io.undertow.servlet.spec.HttpServletResponseImpl.sendRedirect(HttpServletResponseImpl.java:173)
com.ephibian.j2ee.security.CsrfFilter.RedirectToLogin(CsrfFilter.java:194)

Answer 1

它看起来像是您的 servlet 中发生的异常。尝试使用调试器并在此处发布异常消息。