写了一个cookie的定义和获取，结果我输入中文后，页面报错

报错信息如下：

type Exception reportmessage An exception occurred processing JSP page /demo1/page3.jsp at line 16description The server encountered an internal error that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: An exception occurred processing JSP page /demo1/page3.jsp at line 1613:     14:     <%15:         Cookie cookie=new Cookie("message","涓枃");16:         response.addCookie(cookie);17:      %>18: 19: Stacktrace:    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:575)    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)    javax.servlet.http.HttpServlet.service(HttpServlet.java:731)root cause java.lang.IllegalArgumentException: Control character in cookie value or attribute.    org.apache.tomcat.util.http.CookieSupport.isHttpSeparator(CookieSupport.java:205)    org.apache.tomcat.util.http.CookieSupport.isHttpToken(CookieSupport.java:229)    org.apache.tomcat.util.http.ServerCookie.appendCookieValue(ServerCookie.java:185)    org.apache.catalina.connector.Response.generateCookieString(Response.java:1054)    org.apache.catalina.connector.Response.addCookie(Response.java:996)    org.apache.catalina.connector.ResponseFacade.addCookie(ResponseFacade.java:380)    org.apache.jsp.demo1.page3_jsp._jspService(page3_jsp.java:97)    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)    javax.servlet.http.HttpServlet.service(HttpServlet.java:731)    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)    javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

解决方案：cookie也要转码的

定义一个cookie:

1 <%@page import="java.net.URLEncoder"%> 2 <%@ page language="java" contentType="text/html; charset=UTF-8" 3     pageEncoding="UTF-8"%> 4  5  6  7 
      8  9 10 11     
     
      12         
      13         
      14     
     
15     <%16     //转码17         Cookie cookie=new Cookie("message",URLEncoder.encode("中文", "utf-8"));18         response.addCookie(cookie);19      %>20 21 

page4.jsp(获取cookie)

1 <%@page import="java.net.URLDecoder"%> 2 <%@page import="java.net.URLEncoder"%> 3 <%@ page language="java" contentType="text/html; charset=UTF-8" 4     pageEncoding="UTF-8"%> 5  6  7  8 
      9 10 11 12 <%13     String text = request.getParameter("text");14     out.print("text------------->"+text);15     Cookie[] cookies=request.getCookies();16     if(cookies!=null){17     for(Cookie cookie:cookies){18         if(cookie.getName().equals("message")){19         //cookie解码20             out.print("cookie value------>"+URLDecoder.decode(cookie.getValue(), "utf-8"));21         }22     }23  %>24  25 26