java Spring MVC - 请求映射，具有两个不同参数的两个 url
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Spring MVC - Request mapping, two urls with two different parameters
提问by svlada
Is it possible in Spring to have one method with two different urls with different params for each method?
在 Spring 中是否有可能有一种方法有两个不同的 url，每种方法都有不同的参数？
Below is pseudo code
下面是伪代码
@RequestMethod(URL1-param1, URL2-param2)
public void handleAction(@ModelAttribute("A") A a, ...) {
}
At the same time ULR1 is mapped in some other Controller as
同时 ULR1 被映射到其他一些控制器中
@RequestMethod(URL1)
public void handleAction1(@ModelAttribute("A") A a, ...) {
}
回答by Bozho
Update: It appears your question is completely different.
更新：看来您的问题完全不同。
No, you can't have the same url with different parameters in different controllers. And it doesn't make much sense - the url specifies a resource or action, and it cannot be named exactly the same way in two controllers (which denote different behaviours).
不，您不能在不同的控制器中使用具有不同参数的相同 url。而且它没有多大意义 - url 指定了一个资源或操作，并且它不能在两个控制器中以完全相同的方式命名（表示不同的行为）。
You have two options:
您有两个选择：
- use different URLs
- use one method in a misc controller that dispatches to the different controllers (which are injected) depending on the request param.
- 使用不同的网址
- 在 misc 控制器中使用一种方法，该方法根据请求参数分派到不同的控制器（注入）。
Original answer:
原答案：
No. But you can have two methods that do the same thing:
不，但是你可以有两种方法来做同样的事情：
@RequestMethod("/foo")
public void foo(@ModelAttribute("A") A a) {
foobar(a, null);
}
@RequestMethod("/bar")
public void bar(@ModelAttribute("B") B b) {
foobar(null, b);
}
If I haven't understood correctly, and you want the same ModelAttribute, then simply:
如果我没有正确理解，并且您想要相同的 ModelAttribute，那么只需：
@RequestMapping(value={"/foo", "/bar"})
And finally - if you need different request parameters, you can use @RequestParam(required=false)to list all possible params.
最后 - 如果您需要不同的请求参数，您可以使用@RequestParam(required=false)列出所有可能的参数。
回答by Erhan Bagdemir
you can supply multiple mappings for your handler like this
您可以像这样为处理程序提供多个映射
@RequestMapping(value={"", "/", "welcome"})
public void handleAction(@ModelAttribute("A") A a, ...) { }
But if you want to use different parameters for each mapping, then you have to extract your method.
但是如果你想为每个映射使用不同的参数，那么你必须提取你的方法。
回答by svlada
Something like this
像这样的东西
@RequestMapping(value={"URL1"}, method=RequestMethod.POST)
public String handleSubmit(@ModelAttribute("A") A command, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
return helperSubmit();
}
@RequestMapping(value={"URL2"}, method=RequestMethod.POST)
public String handleSubmit(@ModelAttribute("A") A command, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
return helperSubmit();
}
private helperSubmit() {
return "redirect:" + someUrl;
}
