jsp/servlet--cookie.setMaxAge

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setMaxAge

public void setMaxAge

(int expiry)

Sets the maximum age of the cookie in seconds.

A positive value indicates that the cookie will expire after that many seconds have passed. Note that the value is the maximum age when the cookie will expire, not the cookie's current age.

A negative value means that the cookie is not stored persistently and will be deleted when the Web browser exits. A zero value causes the cookie to be deleted.

Parameters:

expiry - an integer specifying the maximum age of the cookie in seconds ; if negative, means the cookie is not stored; if zero, deletes the cookie

See Also:

getMaxAge()

很明显括号的表达式表示秒，负数不保存，零清除cookie