A servlet writes a cookie that cannot be read after forwarding

I write a cookie in a servlet and then read it to the other servlet, but I can't read the last cookie but read the previous cookie. How can i solve it?

Answer:

The customer sends the request, at which time the current cookie is carried

You send cookies, the data has gone to the client, and when it does not affect the first step sent over the cookie

When you read, you use forwarding, and the cookie at this point is the cookie you requested before you sent the cookie.

The customer will send a new cookie again at the next request

The workaround has 2

1 Local record cookies to request or session, not completely dependent on cookies

2 Do not use forward forwarding, the use of the dispatcher of the redirect on it, this is to return the client, the client will make the request again.

Recommend the second kind, simple and effective