Shopping | 基于SpringMVCHibernate实现的在线购物商城

First, if you want the user to be able to select up to 4 products, you should change handleAddToCart's if statement, change product to cart, and the length should be superior ou equal to 4. Then define a chooseOneProductForMeHandler, past it down to Cart, and use it, like so:

The code you have shows how to have a common ratelimit between commands in a cog, to have a cooldown on the on_raw_reaction_add event you need a different approach.

Assuming that there really aren't any obstacles other than other pedestrians, then the parameter that can help improve your situation is the diameter of the pedestrian. Reducing it means that pedestrians can get closer to each other.

You can also change the diameter dynamically at any point of your simulation using ped.setDiameter( x ). So for example, you can set it to 0 at that specific point in time until the pedestrian leaves that area and change it back to 0.5.

Following the discussion in the comments, it appeared that the issue was not the diameter. Nonetheless, I am keeping it above as it might be the issue for someone facing a similar problem.

The real issue was that the modeler asking the question was making the agent leave the pedestrian flow chart using remove(agent). Once the agent is sent back to the flowchart using an Enter block, AnyLogic no longer recognizes that agent as a pedestrian present in the pedestrian network.

As such, instead of using Enter block, pedEnter should be used. The latter requires as input the location of the pedestrian's appearance. Since in your case the pedestrian is not really moving, just leaving the flowchart for modeling purposes, you can specify the location as the agent's current location as shown below.

You want "match any set of digits that is not followed by optional whitespace and x`. For that, you need a "negative lookahead":

On Tomcat sessions are established lazily, when they are needed. There are basically a couple of situations where sessions are created:

• if you call request.getSession() or request.getSession(true) a session is always established,
• if you authenticate users against Tomcat's user database a session might be created depending on the authentication method. Most notably if you use form authentication (see this tutorial) a session is always established,
• JSP pages create sessions unless you add the <%page session="false"%> directive (see Why set a JSP page session = "false" directive?).

Browsers remember cookies, so the presence of a JSESSIONID is not an indication of the presence of a session (it might be there from a previous test). To test for a presence of a session use request.getSession(false). For example:

You can get the new mini cart HTML inside your ajax callback on the server and then return that as a response to the jQuery ajax call then simply replace the whole mini cart HTML on the front-end with the updated HTML.

Try this:

You should use col-xs-1 col-xs-7 col-xs-3 in your class (instead col-7) or any size and display what you want.

I have found the solution!