/**
* Copyright (c) 2005-2012 https://github.com/zhangkaitao
*
* Licensed under the Apache License, Version 2.0 (the "License");
*/
package com.sishuok.chapter4.web.servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.SessionCookieConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* <p>User: Zhang Kaitao
* <p>Date: 13-6-22 下午1:52
* <p>Version: 1.0
*/
@WebServlet(name = "apiServlet", urlPatterns = "/api")
public class ApiServlet extends HttpServlet {
@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
//以前
req.getSession().getServletContext();
//现在
ServletContext sc = req.getServletContext();
//servlet主要版本
System.out.println(sc.getEffectiveMajorVersion());
//servlet次要版本
System.out.println(sc.getEffectiveMinorVersion());
//默认的session跟踪机制
System.out.println(sc.getDefaultSessionTrackingModes());
//有效的session跟踪机制
System.out.println(sc.getEffectiveSessionTrackingModes());
//设置session跟踪机制：有COOKIE URL SSL
//需要在容器初始化时 完成 如ServletContextListener#contextInitialized方法中调用如下代码 具体看javadoc
// Set<SessionTrackingMode> sessionTrackingModes = new HashSet<SessionTrackingMode>();
// sessionTrackingModes.add(SessionTrackingMode.COOKIE);
// sc.setSessionTrackingModes(sessionTrackingModes);
//用于session跟踪的cookie配置，比如默认Name是JSESSIONID，可以修改之
SessionCookieConfig sessionCookieConfig = sc.getSessionCookieConfig();
System.out.println(sessionCookieConfig.getName());
//把默认的JSESSIONID--修改为->id 可以观察客户端变成了id
sessionCookieConfig.setName("id");
//得到请求的session id
req.getRequestedSessionId();
/**得到分派的类型 请参考：{@link javax.servlet.DispatcherType}*/
System.out.println(req.getDispatcherType());
Cookie cookie = new Cookie("key", "value");
//servlet 3，功能是禁止客户端脚本访问
cookie.setHttpOnly(true);
resp.addCookie(cookie);
//得到响应的状态码
resp.getStatus();
//得到响应头
// resp.getHeader();
// resp.getHeaderNames();
// resp.getHeaders();
}
}