Cookie的用法

创建Cookie

             StringBuffer sb=new StringBuffer();
                    sb.append("username=");
                    sb.append(name);
                    sb.append("&password=");
                    sb.append(pwd);

　　　　　　　//创建名为userinfo的Cookie
                    Cookie cookie=new Cookie("userinfo",sb.toString());

                   //  设置Cookie的生命周期为３０分钟
                    cookie.setMaxAge(1800);
                    response.addCookie(cookie);

接收Cookie的值

　

 Cookie[] cookies=request.getCookies();          
        if(null!=cookies && cookies.length!=0)
        {          
            String name=null;
            String pwd=null;
             for(int i=0;i<cookies.length;i++)
             {
                Cookie cookie=cookies[i];
                String cName=cookie.getName();
               
                if(cName.equals("userinfo"))
                {
                    String cValue=cookie.getValue();
                    String[] userInfo=cValue.split("&");
                    for(int j=0;j<userInfo.length;j++)
                    {
                        String[] value=userInfo[j].split("=");
                        if(value[0].equals("username"))
                        {
                            name=value[1];
                        }
                        if(value[0].equals("password"))
                        {
                            pwd=value[1];
                        }
                    }
                }
            }