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Voovan is a java framwork and it not depends on any third-party framework.
package org.voovan.http.server;
import org.voovan.http.message.packet.Cookie;
import org.voovan.http.server.context.WebServerConfig;
import org.voovan.tools.cache.CacheMap;
import org.voovan.tools.cache.CachedHashMap;
import org.voovan.tools.json.JSON;
import org.voovan.tools.log.Logger;
import org.voovan.tools.reflect.TReflect;
/**
* WebServer session 管理器
*
* 用到的 CacheMap 接口的实现类的方法
*
* @author helyho
*
* Voovan Framework.
* WebSite: https://github.com/helyho/Voovan
* Licence: Apache v2 License
*/
public class SessionManager{
private CacheMap httpSessions;
private WebServerConfig webConfig;
/**
* 构造函数
* @param webConfig Web 服务配置对象
*/
public SessionManager(WebServerConfig webConfig){
this.webConfig = webConfig;
httpSessions = getSessionContainer();
if(httpSessions instanceof CachedHashMap){
((CachedHashMap)httpSessions).create();
}
if(httpSessions == null){
httpSessions = new CachedHashMap();
Logger.warn("Create session container from config file failed,now use CachedHashMap as defaul session container.");
}
}
/**
* 获取 Session 容器
*
* @return Session 容器 Map
*/
public CacheMap getSessionContainer(){
if(httpSessions!=null){
return httpSessions;
}else{
try {
String sessionContainerClassName = webConfig.getSessionContainer();
//根据 Class 构造一个 Session 容器
return TReflect.newInstance(sessionContainerClassName);
} catch (ReflectiveOperationException e) {
Logger.error("SessionManager.getSessionContainer Reflective operation error",e);
return null;
}
}
}
/**
* 保存 Session
*
* @param session HTTP-Session对象
*/
public void saveSession(HttpSession session) {
if(httpSessions instanceof CachedHashMap){
httpSessions.put(session.getId(), session, session.getMaxInactiveInterval());
} else {
httpSessions.put(session.getId(), JSON.toJSON(session), session.getMaxInactiveInterval());
}
}
/**
* 获取 Session
*
* @param id session Id
* @return HTTP-Session对象
*/
public HttpSession getSession(String id) {
if (id!=null && httpSessions.containsKey(id)) {
Object sessionObject = httpSessions.getAndRefresh(id);
HttpSession httpSession = null;
if(sessionObject instanceof HttpSession){
httpSession = (HttpSession)sessionObject;
}
if(sessionObject instanceof String) {
httpSession = JSON.toObject((String)sessionObject, HttpSession.class);
}
return httpSession;
}
return null;
}
/**
* 获取 Session
*
* @param cookie cookie 对象
* @return HTTP-Session对象
*/
public HttpSession getSession(Cookie cookie) {
if (cookie!=null && httpSessions.containsKey(cookie.getValue())) {
return getSession(cookie.getValue());
}
return null;
}
/**
* 判断 Session 是否存在
* @param cookie cookie 对象
* @return 是否存在
*/
public boolean containsSession(Cookie cookie) {
if(cookie==null){
return false;
} else {
return getSession(cookie) != null;
}
}
/**
* 移除会话
* @param id 会话 id
*/
public void removeSession(String id){
if(httpSessions.containsKey(id)) {
httpSessions.remove(id);
}
}
/**
* 移除会话
* @param session HttpSession 对象
*/
public void removeSession(HttpSession session){
if(session!=null && session.getId()!=null) {
removeSession(session.getId());
}
}
/**
* 获得 Session 如果没有对应的 session 则创建一个新的 Session
* @param request HTTP 请求对象
* @return HTTP-Session对象
*/
public HttpSession newSession(HttpRequest request){
HttpSession session = null;
if(request.header().get("Host") != null) {
session = new HttpSession(webConfig, this, request.getSocketSession());
}else{
Logger.warn("Create session cookie error, the request haven't an header of host.");
}
return session;
}
/**
* 构造一个 SessionManager
* @param config WEB 配置对象
* @return SessionManager对象
*/
public static SessionManager newInstance(WebServerConfig config){
return new SessionManager(config);
}
}
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