用ThreadLocal来存储Session,以便实现Session any where
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import com.enation.framework.context.webcontext.impl.WebSessionContextImpl;
/**
* 用ThreadLocal来存储Session,以便实现Session any where
* @version 1.1
* 新增request any where
*/
public class ThreadContextHolder {
protected static final Logger logger = Logger.getLogger(ThreadContextHolder.class);
private static ThreadLocal<WebSessionContext> SessionContextThreadLocalHolder = new ThreadLocal<WebSessionContext>();
private static ThreadLocal<HttpServletRequest> HttpRequestThreadLocalHolder = new ThreadLocal<HttpServletRequest>();
private static ThreadLocal<HttpServletResponse> HttpResponseThreadLocalHolder = new ThreadLocal<HttpServletResponse>();
public static void setHttpRequest(HttpServletRequest request){
HttpRequestThreadLocalHolder.set(request);
}
public static HttpServletRequest getHttpRequest(){
return HttpRequestThreadLocalHolder.get();
}
public static void remove(){
SessionContextThreadLocalHolder.remove();
HttpRequestThreadLocalHolder.remove();
HttpResponseThreadLocalHolder.remove();
}
public static void setHttpResponse(HttpServletResponse response){
HttpResponseThreadLocalHolder.set(response);
}
public static HttpServletResponse getHttpResponse(){
return HttpResponseThreadLocalHolder.get();
}
public static void setSessionContext(WebSessionContext context) {
SessionContextThreadLocalHolder.set(context);
}
public static void destorySessionContext() {
WebSessionContext context = SessionContextThreadLocalHolder.get();
if (context != null) {
context.destory();
}
}
public static WebSessionContext getSessionContext() {
if (SessionContextThreadLocalHolder.get() == null) {
//if(logger.isDebugEnabled())
//logger.debug("create new webSessionContext.");
SessionContextThreadLocalHolder.set(new WebSessionContextImpl());
}else{
//if(logger.isDebugEnabled())
//logger.debug(" webSessionContext not null and return ...");
}
return SessionContextThreadLocalHolder.get();
}
}实例
import com.platform.framework.context.ThreadContextHolder;
User user = userService.getUserByCode(userCode);
request.getSession(true).setAttribute("current_login_user", user);
ThreadContextHolder.setHttpRequest(request); // 将当前登录 Request 放入线程变量
request.getSession(true).setAttribute("menuCode", menuCode);取存在session中的user
User user = (User)ThreadContextHolder.getHttpRequest().getSession().getAttribute("current_login_user");