java 获取URI路径中的变量
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Get the variable in the path of a URI
提问by flybywire
In Spring MVC I have a controller that listens to all requests coming to /my/app/path/controller/*.
在 Spring MVC 中，我有一个控制器来监听所有来自/my/app/path/controller/*.
Let's say a request comes to /my/app/path/controller/blah/blah/blah/1/2/3.
假设一个请求来到/my/app/path/controller/blah/blah/blah/1/2/3.
How do I get the /blah/blah/blah/1/2/3part, i.e. the part that matches the *in the handler mapping definition.
我如何获取/blah/blah/blah/1/2/3部分，即与*处理程序映射定义中的匹配的部分。
In other words, I am looking for something similar that pathInfodoes for servlets but for controllers.
换句话说，我正在寻找与pathInfoservlet相似但适用于控制器的东西。
采纳答案by labratmatt
In Spring 3 you can use the @ PathVariable annotation to grab parts of the URL.
在 Spring 3 中，您可以使用 @PathVariable 注释来获取 URL 的一部分。
Here's a quick example from http://blog.springsource.com/2009/03/08/rest-in-spring-3-mvc/
这是来自http://blog.springsource.com/2009/03/08/rest-in-spring-3-mvc/的一个快速示例
@RequestMapping(value="/hotels/{hotel}/bookings/{booking}", method=RequestMethod.GET)
public String getBooking(@PathVariable("hotel") long hotelId, @PathVariable("booking") long bookingId, Model model) {
Hotel hotel = hotelService.getHotel(hotelId);
Booking booking = hotel.getBooking(bookingId);
model.addAttribute("booking", booking);
return "booking";
}
回答by Dónal Boyle
In Spring 2.5 you can override any method that takes an instance of HttpServletRequest as an argument.
在 Spring 2.5 中，您可以覆盖任何将 HttpServletRequest 实例作为参数的方法。
org.springframework.web.servlet.mvc.AbstractController.handleRequest
org.springframework.web.servlet.mvc.AbstractController.handleRequest
In Spring 3 you can add a HttpServletRequest argument to your controller method and spring will automatically bind the request to it. e.g.
在 Spring 3 中，您可以向控制器方法添加 HttpServletRequest 参数，spring 将自动将请求绑定到它。例如
@RequestMapping(method = RequestMethod.GET)
public ModelMap doSomething( HttpServletRequest request) { ... }
In either case, this object is the same request object you work with in a servlet, including the getPathInfo method.
在任一情况下，此对象与您在 servlet 中使用的请求对象相同，包括 getPathInfo 方法。
