fix: 退出时清除session

src/main/java/com/uas/platform/b2b/controller/SecurityController.java

@@ -56,6 +56,7 @@ public class SecurityController {
 	@ResponseBody
 	public ModelMap logout(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException {
 		response.setContentType("text/html;charset=UTF-8");
+		session.removeAttribute("user");
 		session.invalidate();
 		// 清除当前域的cookie
 		SSOHelper.clearLogin(request, response);