在firefox下swfupload 上传时session不一致问题
在一个项目遇到多文件上传时,firefox下,服务器端的session获取不一致问题。
解决办法:
?
解决办法:将sessionID传过去!
upload_url: "<%=request.getContextPath()%>/UploadServlet;jsessionid=<%=session.getId() %>"
?
?
Servlet2.1之后不支持SessionContext里面getSession(String id)方法。
但是,我们可以通过HttpSessionListener监听器和全局静态map自己实现一个SessionContext。
MySessionContext.java:
public class MySessionContext {
??? private static HashMap mymap = new HashMap();
??? public static synchronized void AddSession(HttpSession session) {
??????? if (session != null) {
??????????? mymap.put(session.getId(), session);
??????? }
??? }
??? public static synchronized void DelSession(HttpSession session) {
??????? if (session != null) {
??????????? mymap.remove(session.getId());
??????? }
??? }
??? public static synchronized HttpSession getSession(String session_id) {
??????? if (session_id == null)
??????? return null;
??????? return (HttpSession) mymap.get(session_id);
??? }
}
MySessionListener.java:
public class MySessionListener implements HttpSessionListener {
??? public void sessionCreated(HttpSessionEvent httpSessionEvent) {
??? MySessionContext.AddSession(httpSessionEvent.getSession());
??? }
??? public void sessionDestroyed(HttpSessionEvent httpSessionEvent) {
??????? HttpSession session = httpSessionEvent.getSession();
??????? MySessionContext.DelSession(session);
??? }
}
web.xml添加一个监听器:
<listener>
<listener-class>listener.MySessionListener</listener-class>
</listener>
根据sessionId获取Session对象:
String sessionId = request.getParameter("sessionId");
HttpSession session = MySessionContext.getSession(sessionId);