好的URI设计的一般原则:

Don't use query parameters to alter state Don't use mixed-case paths if you can help it; lowercase is best Don't use implementation-specific extensions in your URIs (.php, .py, .pl, etc.) Don't fall into RPC with your URIs Do limit your URI space as much as possible Do keep path segments short Do prefer either /resource or /resource/; create 301 redirects from the one you don't use Do use query parameters for sub-selection of a resource; i.e. pagination, search queries Do move stuff out of the URI that should be in an HTTP header or a body

(注意:我没有说“rest式URI设计”;uri在REST中本质上是不透明的。)

HTTP方法选择的一般原则:

Don't ever use GET to alter state; this is a great way to have the Googlebot ruin your day Don't use PUT unless you are updating an entire resource Don't use PUT unless you can also legitimately do a GET on the same URI Don't use POST to retrieve information that is long-lived or that might be reasonable to cache Don't perform an operation that is not idempotent with PUT Do use GET for as much as possible Do use POST in preference to PUT when in doubt Do use POST whenever you have to do something that feels RPC-like Do use PUT for classes of resources that are larger or hierarchical Do use DELETE in preference to POST to remove resources Do use GET for things like calculations, unless your input is large, in which case use POST

使用HTTP设计web服务的一般原则:

Don't put metadata in the body of a response that should be in a header Don't put metadata in a separate resource unless including it would create significant overhead Do use the appropriate status code 201 Created after creating a resource; resource must exist at the time the response is sent 202 Accepted after performing an operation successfully or creating a resource asynchronously 400 Bad Request when someone does an operation on data that's clearly bogus; for your application this could be a validation error; generally reserve 500 for uncaught exceptions 401 Unauthorized when someone accesses your API either without supplying a necessary Authorization header or when the credentials within the Authorization are invalid; don't use this response code if you aren't expecting credentials via an Authorization header. 403 Forbidden when someone accesses your API in a way that might be malicious or if they aren't authorized 405 Method Not Allowed when someone uses POST when they should have used PUT, etc 413 Request Entity Too Large when someone attempts to send you an unacceptably large file 418 I'm a teapot when attempting to brew coffee with a teapot Do use caching headers whenever you can ETag headers are good when you can easily reduce a resource to a hash value Last-Modified should indicate to you that keeping around a timestamp of when resources are updated is a good idea Cache-Control and Expires should be given sensible values Do everything you can to honor caching headers in a request (If-None-Modified, If-Modified-Since) Do use redirects when they make sense, but these should be rare for a web service

关于你的具体问题，第4和第5点应该用POST。这些操作属于上面的“类rpc”准则。对于#5，记住POST不一定要使用Content-Type: application/x-www-form-urlencoded。这也可以是一个JSON或CSV有效负载。

url的设计与应用程序是否是RESTful无关。因此，“RESTful url”这个短语是毫无意义的。

我认为你应该多读一些关于REST到底是什么的书。REST将url视为不透明的，因此不知道其中有什么，是否有动词或名词或其他什么。您可能仍然希望设计url，但这是关于UI，而不是REST。

也就是说，让我们来回答您的问题:最后两种情况不是RESTful的，不适合任何类型的RESTful方案。这些就是所谓的RPC。如果认真对待REST，就必须重新思考应用程序如何从头开始工作。要么放弃REST，把你的应用程序作为RPC应用程序。

嗯，也许不是。

这里的想法是，你必须把所有东西都当作资源，所以一旦一组参数有了一个URL，你可以引用它，你只需要添加:

GET [parametersurl]/validationresults

POST [paramatersurl]
body: {command:"activate"}

但是，那个激活的东西是RPC，不是REST。

激活和验证需求是试图更改资源状态的情况。将一个订单“完成”或其他一些请求“提交”是没有区别的。有许多方法可以对这种状态变化建模，但我发现最有效的一种方法是为相同状态的资源创建集合资源，然后在集合之间移动资源以影响状态。

例如:创建一些资源，例如:

/ActiveParameters
/ValidatedParameters

如果要使一组参数处于活动状态，则将该集添加到ActiveParameters集合。您可以将参数集作为实体体传递，也可以将url作为查询参数传递，如下所示:

POST /ActiveParameters?parameter=/Parameters/{Id}

同样的事情也可以用/ValidatedParameters完成。如果参数无效，则服务器可以向请求返回“Bad Request”，将参数添加到已验证参数的集合中。

也许是这样的:

PUT /parameters/activation HTTP/1.1
Content-Type: application/json; encoding=UTF-8
Content-Length: 18

{ "active": true }

In a REST environment, each URL is a unique resource. What are your resources? A financial calculator really doesn't have any obvious resources. You need to dig into what you are calling parameters and pull out the resources. For example, an amortization calendar for a loan might be a resource. The URL for the calendar might include start date, term (in months or years), period (when interest is compounded), interest rate, and initial principle. With all those values, you have a specific calendar of payments:

http://example.com/amort_cal/2009-10-20/30yrsfixed/monthly/5.00/200000

现在，我不知道你在计算什么，但你的参数列表的概念听起来不RESTful。正如其他人所说，上面的需求听起来更像是XMLRPC。如果你在尝试REST，你需要名词。计算不是名词，而是作用于名词的动词。你需要把它转过来，把名词从你的计算器中抽出来。

好的URI设计的一般原则:

Don't use query parameters to alter state Don't use mixed-case paths if you can help it; lowercase is best Don't use implementation-specific extensions in your URIs (.php, .py, .pl, etc.) Don't fall into RPC with your URIs Do limit your URI space as much as possible Do keep path segments short Do prefer either /resource or /resource/; create 301 redirects from the one you don't use Do use query parameters for sub-selection of a resource; i.e. pagination, search queries Do move stuff out of the URI that should be in an HTTP header or a body

(注意:我没有说“rest式URI设计”;uri在REST中本质上是不透明的。)

HTTP方法选择的一般原则:

Don't ever use GET to alter state; this is a great way to have the Googlebot ruin your day Don't use PUT unless you are updating an entire resource Don't use PUT unless you can also legitimately do a GET on the same URI Don't use POST to retrieve information that is long-lived or that might be reasonable to cache Don't perform an operation that is not idempotent with PUT Do use GET for as much as possible Do use POST in preference to PUT when in doubt Do use POST whenever you have to do something that feels RPC-like Do use PUT for classes of resources that are larger or hierarchical Do use DELETE in preference to POST to remove resources Do use GET for things like calculations, unless your input is large, in which case use POST

使用HTTP设计web服务的一般原则:

Don't put metadata in the body of a response that should be in a header Don't put metadata in a separate resource unless including it would create significant overhead Do use the appropriate status code 201 Created after creating a resource; resource must exist at the time the response is sent 202 Accepted after performing an operation successfully or creating a resource asynchronously 400 Bad Request when someone does an operation on data that's clearly bogus; for your application this could be a validation error; generally reserve 500 for uncaught exceptions 401 Unauthorized when someone accesses your API either without supplying a necessary Authorization header or when the credentials within the Authorization are invalid; don't use this response code if you aren't expecting credentials via an Authorization header. 403 Forbidden when someone accesses your API in a way that might be malicious or if they aren't authorized 405 Method Not Allowed when someone uses POST when they should have used PUT, etc 413 Request Entity Too Large when someone attempts to send you an unacceptably large file 418 I'm a teapot when attempting to brew coffee with a teapot Do use caching headers whenever you can ETag headers are good when you can easily reduce a resource to a hash value Last-Modified should indicate to you that keeping around a timestamp of when resources are updated is a good idea Cache-Control and Expires should be given sensible values Do everything you can to honor caching headers in a request (If-None-Modified, If-Modified-Since) Do use redirects when they make sense, but these should be rare for a web service

关于你的具体问题，第4和第5点应该用POST。这些操作属于上面的“类rpc”准则。对于#5，记住POST不一定要使用Content-Type: application/x-www-form-urlencoded。这也可以是一个JSON或CSV有效负载。