异常记录---cookie中包含中文报错:Control character in cookie value or attribute

错误信息:

java.lang.IllegalArgumentException: Control character in cookie value or attribute.
	at org.apache.tomcat.util.http.LegacyCookieProcessor.needsQuotes(LegacyCookieProcessor.java:412)
	at org.apache.tomcat.util.http.LegacyCookieProcessor.generateHeader(LegacyCookieProcessor.java:284)
	at org.apache.catalina.connector.Response.generateCookieString(Response.java:940)
	at org.apache.catalina.connector.Response.addCookie(Response.java:888)
	at org.apache.catalina.connector.ResponseFacade.addCookie(ResponseFacade.java:392)
	at cn.fan.CookieDemo01.doGet(CookieDemo01.java:17)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

第一句:Control character in cookie value or attribute

原因:Cookie的属性或者value为中文.

     Cookie只能保存合法的ASCII字符,如果需要保存中文,要使用URLEncoder/URLDecoder转换

解决方法:

1.若是添加Cookie:

Cookie cookie = new Cookie("username",URLEncoder.encode("唐僧","utf-8"));

2.若是获取Cookie:

//获取Cookie
Cookie[] cookies = request.getCookies();
if(Cookies != null){
    Cookie cookie = Cookies[0]; //如有多个Cookie,需要遍历
    String name = URLDecoder.decode(cookie.getName(),"utf-8");
    String value = URLDecoder.decode(cookie.getValue(), "utf-8");
}

问题解决!