怎么回事？

ype Exception report

message An exception occurred processing JSP page /details.jsp at line 65

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /details.jsp at line 65

62:      
63:     Cookie cookies=new Cookie("Listcookie",list);
64:    cookies.setMaxAge(10);
65:     response.addCookie(cookies);
66:    
67:      %>
68:      <%=list %>


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:584)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:481)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

root cause

java.lang.IllegalArgumentException: An invalid character [44] was present in the Cookie value
org.apache.tomcat.util.http.Rfc6265CookieProcessor.validateCookieValue(Rfc6265CookieProcessor.java:162)
org.apache.tomcat.util.http.Rfc6265CookieProcessor.generateHeader(Rfc6265CookieProcessor.java:111)
org.apache.catalina.connector.Response.generateCookieString(Response.java:989)
org.apache.catalina.connector.Response.addCookie(Response.java:937)
org.apache.catalina.connector.ResponseFacade.addCookie(ResponseFacade.java:386)
org.apache.jsp.details_jsp._jspService(details_jsp.java:197)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/8.5.6 logs.

Apache Tomcat/8.5.6