asp.net-mvc MVC [HttpPost/HttpGet] 用于操作
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11767911/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
MVC [HttpPost/HttpGet] for Action
提问by Nate Pet
I am using MVC C#.
我正在使用 MVC C#。
Can somebody give an example on why one would use
有人可以举例说明为什么要使用
[HttpPost/HttpGet]
for an Action. How can an active have both - what is the practical use?
为一个动作。一个主动怎么能两者兼得——实际用途是什么？
回答by Jesse Hallam
Let's say you have a Loginaction which provides the user with a login screen, then receives the user name and password back after the user submits the form:
假设您有一个Login操作为用户提供登录屏幕，然后在用户提交表单后接收用户名和密码：
public ActionResult Login() {
return View();
}
public ActionResult Login(string userName, string password) {
// do login stuff
return View();
}
MVC isn't being given clear instructions on which action is which, even though we can tell by looking at it. If you add [HttpGet] to the first action and [HttpPost] to the section action, MVC clearly knows which action is which.
MVC 没有得到关于哪个动作是哪个动作的明确说明，即使我们可以通过查看它来判断。如果将 [HttpGet] 添加到第一个操作，将 [HttpPost] 添加到部分操作，MVC 清楚地知道哪个操作是哪个。
Why? See Request Methods. Long and short: When a user views a page, that's a GET request and when a user submits a form, that's usually a POST request. HttpGet and HttpPost just restrict the action to the applicable request type.
为什么？请参阅请求方法。长和短：当用户查看页面时，这是一个 GET 请求，而当用户提交一个表单时，这通常是一个 POST 请求。HttpGet 和 HttpPost 只是将操作限制为适用的请求类型。
[HttpGet]
public ActionResult Login() {
return View();
}
[HttpPost]
public ActionResult Login(string userName, string password) {
// do login stuff
return View();
}
You can also combine the request method attributes if your action serves requests from multiple verbs:
如果您的操作服务于来自多个动词的请求，您还可以组合请求方法属性：
[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)].
[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)].
回答by drzaus
You don't need to specify both at the same time, unless you're specifically restricting the otherverbs (i.e. you don't want PUT or DELETE, etc).
您不需要同时指定两者，除非您特别限制其他动词（即您不想要 PUT 或 DELETE 等）。
Contrary to some of the comments, I was also unable to use both Attributes [HttpGet, HttpPost]at the same time, but was able to specify both verbs instead.
与一些评论相反，我也无法同时使用这两个属性[HttpGet, HttpPost]，但能够指定两个动词。
Actions
行动
private ActionResult testResult(int id)
{
return Json(new {
// user input
input = id,
// just so there's different content in the response
when = DateTime.Now,
// type of request
req = this.Request.HttpMethod,
// differentiate calls in response, for matching up
call = new StackTrace().GetFrame(1).GetMethod().Name
},
JsonRequestBehavior.AllowGet);
}
public ActionResult Test(int id)
{
return testResult(id);
}
[HttpGet]
public ActionResult TestGetOnly(int id)
{
return testResult(id);
}
[HttpPost]
public ActionResult TestPostOnly(int id)
{
return testResult(id);
}
[HttpPost, HttpGet]
public ActionResult TestBoth(int id)
{
return testResult(id);
}
[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)]
public ActionResult TestVerbs(int id)
{
return testResult(id);
}
Results
结果
via POSTMAN, formatting by markdowntables
通过邮递员，按markdowntables格式化
| Method | URL | Response |
|-------- |---------------------- |---------------------------------------------------------------------------------------- |
| GET | /ctrl/test/5 | { "input": 5, "when": "/Date(1408041216116)/", "req": "GET", "call": "Test" } |
| POST | /ctrl/test/5 | { "input": 5, "when": "/Date(1408041227561)/", "req": "POST", "call": "Test" } |
| PUT | /ctrl/test/5 | { "input": 5, "when": "/Date(1408041252646)/", "req": "PUT", "call": "Test" } |
| GET | /ctrl/testgetonly/5 | { "input": 5, "when": "/Date(1408041335907)/", "req": "GET", "call": "TestGetOnly" } |
| POST | /ctrl/testgetonly/5 | 404 |
| PUT | /ctrl/testgetonly/5 | 404 |
| GET | /ctrl/TestPostOnly/5 | 404 |
| POST | /ctrl/TestPostOnly/5 | { "input": 5, "when": "/Date(1408041464096)/", "req": "POST", "call": "TestPostOnly" } |
| PUT | /ctrl/TestPostOnly/5 | 404 |
| GET | /ctrl/TestBoth/5 | 404 |
| POST | /ctrl/TestBoth/5 | 404 |
| PUT | /ctrl/TestBoth/5 | 404 |
| GET | /ctrl/TestVerbs/5 | { "input": 5, "when": "/Date(1408041709606)/", "req": "GET", "call": "TestVerbs" } |
| POST | /ctrl/TestVerbs/5 | { "input": 5, "when": "/Date(1408041831549)/", "req": "POST", "call": "TestVerbs" } |
| PUT | /ctrl/TestVerbs/5 | 404 |
回答by Ben Anderson
In Mvc 4 you can use AcceptVerbsAttribute, I think this is a very clean solution
在 Mvc 4 中你可以使用 AcceptVerbsAttribute，我认为这是一个非常干净的解决方案
[AcceptVerbs(WebRequestMethods.Http.Get, WebRequestMethods.Http.Post)]
public IHttpActionResult Login()
{
// Login logic
}
回答by dknaack
You cant combine this to attributes.
你不能把它和属性结合起来。
But you can put both on one action method but you can encapsulate your logic into a other method and call this method from both actions.
但是您可以将两者放在一个操作方法上，但您可以将您的逻辑封装到另一种方法中，并从两个操作中调用此方法。
The ActionNameAttribute allows to have 2 ActionMethods with the same name.
该ActionName属性允许有 2 个同名的 ActionMethods。
[HttpGet]
public ActionResult MyMethod()
{
return MyMethodHandler();
}
[HttpPost]
[ActionName("MyMethod")]
public ActionResult MyMethodPost()
{
return MyMethodHandler();
}
private ActionResult MyMethodHandler()
{
// handle the get or post request
return View("MyMethod");
}
