Java web-httpservlet中session的用法

void session.setAttribute(k,v)   //session存入值 key=name,value 'yushengjun'
Object session.getAttribute(k) //获取到session中的值
void removeAttribute(k) //删除session

HttpSession session = req.getSession();//获取当前的session
 session.setAttribute("name","fish9");
 //插入session值

HttpSession session = req.getSession();//获取当前的session
String name = (String) session.getAttribute("name");