An invalid character [34] was present in the Cookie value如何解决

[qq_30539255]

Map<String,ProductItem> buycarmap=buycar.getMap();
JSONObject buycarmapjson=JSONObject.fromObject(buycarmap);
String buycarStr=buycarmapjson.toString();
Cookie buycarcookie=new Cookie("buycar",buycarStr);
response.addCookie(buycarcookie);//这的问题34为双引号，已经进行encode编码

json输出结果：
{"1":{"count":1,"product":{"product_describ":"晓通980","product_id":1,"product_introduction":"为发烧而生","product_name":"小米","product_number":3,"product_price":2000,"product_thumbnail":"http%3A%2F%2Flocalhost%3A8080%2Fmarket%2Ffile%5C0%5C14%5C594386c0-2485-4656-95b2-189d88cb6e82.jpg"}}}


java.lang.IllegalArgumentException: An invalid character [34] was present in the Cookie value
at org.apache.tomcat.util.http.Rfc6265CookieProcessor.validateCookieValue(Rfc6265CookieProcessor.java:162)
at org.apache.tomcat.util.http.Rfc6265CookieProcessor.generateHeader(Rfc6265CookieProcessor.java:111)
at org.apache.catalina.connector.Response.generateCookieString(Response.java:989)
at org.apache.catalina.connector.Response.addCookie(Response.java:937)
at org.apache.catalina.connector.ResponseFacade.addCookie(ResponseFacade.java:386)
at servlet.controler.doPost(controler.java:105)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)



求大神帮解决一下