第2章 jsp基础知识.ppt

* Cookie 设置与读取Cookie属性 public int getMaxAge() //获取过期时间(秒) public void setMaxAge(int expiry) //设置过期时间(秒) public String getName() public void setName(String newName) public String getValue() public void setValue(String newValue) * Cookie 将Cookie加入HTTP头部 //利用response将Cookie写回到客户端 public void addCookie(Cookie cookie) 示例 Cookie cookie = new Cookie(favorColor , blue ); response.addCookie(cookie); * Cookie 读取Cookie //从request中读取Cookie数组 public Cookie[] getCookies() 示例 Cookie[] cookies = request.getCookies(); for(int i=0; icookies.length; i++) { Cookie cookie = cookies[i]; //查找所要的Cookie } 本章小结 * * package JavaBean; public class Item { private String pid; private String pname; private double price; public void setPid(String id ) { pid = id; } public String getPid() { return pid; } public void setPname(String name) { pname = name; } public String getPname() { return pname; } public void setPrice(double p){ price = p; } public double getPrice() { return price; } } useBean.jsp %@ page language=java import=java.util.* pageEncoding=GBK% !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN html head titleMy JSP useBean.jsp starting page/title /head body jsp:useBean id=item class=JavaBean.Item /jsp:useBean % item.setPid(001); item.setPname(摩托罗拉); % H1center%=item.getPname() %/center/H1 /body /html * useBean.jsp %@ page language=java import=java.util.* pageEncoding=GBK% !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN html head titleMy JSP useBean.jsp starting page/title /head body jsp:useBean id=item class=JavaBean.Item jsp:setProperty name=item property=pid value=001/ jsp:setProperty name=item property=pname value=摩托罗拉/ /jsp:useBean H1center%=item.getPname() %/center/H1 /body /html * * %@ page language=java contentType=text/html; charset=gb2312 % html head meta http-equiv=Content-Type content=text/html; charset=gb2312 / titler