jsp学习的简单代码（5）

==============================

index.jsp

==============================

<%

//request.setCharacterEncoding("utf-8");

Cookie cooks[]=request.getCookies();

String name=null;

if(cooks!=null)

     for(int i=0;i<cooks.length;i++){

          if(cooks[i].getName().equals("userName")){

                name=cooks[i].getValue();

                break;

           }

 }

if(name==null)  name="";

%>

<form action="log.jsp" method="post">

     用户名：<input type="text" name="name" value="<%=name%>"><br>

     密码： <input type="password" name="pwd"><br>

     <input type="submit" value="submit">

 </form>

==============================

log.jsp

==============================

<%

        //获取表单数据

        //request.setCharacterEncoding("utf-8");

        String name=request.getParameter("name");

        String pwd=request.getParameter("pwd");

        //设置Cookie对象

        Cookie cookieName=new Cookie("userName",name);
        cookieName.setMaxAge(500000000);

        response.addCookie(cookieName);

        //输出用户名

        out.print("欢迎你，"+name+"<br>");       

%>