COOKIE中的SESSIONID

//设置COOKIE中的SESSIONID
response.setHeader("Set-Cookie","JSESSIONID="+request.getSession().getId());

//读取COOKIE

Cookie[] cookies=request.getCookies();
if (cookies !=null)
for(int i=0;i<cookies.length;i++){
 out.print(cookies[i].getName());
 out.print("=");
 out.print(cookies[i].getValue());
 out.print("<br>");
}