Java Spring MVC 控制器 HTTP GET 查询参数
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Spring MVC controller HTTP GET query parameters
提问by Boden
How do I, without annotations, create and wire a controller that will perform an action based on a query parameter?
在没有注释的情况下，我如何创建和连接将基于查询参数执行操作的控制器？
So maybe I've got a page with a list of items on it, and each one is a link like "edititem.htm?id=5". When the user clicks a link I want the controller to load up "item #5" and pass it to my edit form.
所以也许我有一个页面，上面有一个项目列表，每个页面都是一个链接，如“edititem.htm?id=5”。当用户单击链接时，我希望控制器加载“项目 #5”并将其传递给我的编辑表单。
I'm sorry to ask such a silly question, but for some reason I can't find any example of doing this online.
我很抱歉问这样一个愚蠢的问题，但由于某种原因，我在网上找不到任何这样做的例子。
采纳答案by Theo
You should have a Controller that maps to edititem.htm. (Maybe a SimpleFormController)
您应该有一个映射到 edititem.htm 的控制器。（也许是SimpleFormController）
Override one of the two showForm methods to populate the your model with the item:
覆盖两个 showForm 方法之一以使用项目填充您的模型：
protected ModelAndView showForm(HttpServletRequest request, HttpServletResponse response, BindException errors){
//get the id
int id = Integer.parseInt(request.getParameter("id"));
// get the object
Item item = dao.getItemById(id);
return new ModelAndView(getFormView(), "item", item);
}
Also, see Different views with Spring's SimpleFormController
