为什么“没有找到与请求 URI 匹配的 HTTP 资源"?这里?

本文介绍了为什么“没有找到与请求 URI 匹配的 HTTP 资源"?这里?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我的控制器中有这样的代码:

I have code in my controller like so:

[Route("api/deliveryitems/InsertIntoPPTData/{stringifiedRecord}")]

...我通过邮递员这样称呼它:

...and I'm calling it via Postman like so:

    http://localhost:21609/api/deliveryitems/InsertIntoPPTData?
stringifiedRecord=serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2

...但是得到:

{
Message: "No HTTP resource was found that matches the request URI     
'http://localhost:21609/api/deliveryitems/InsertIntoPPTData?   stringifiedRecord=serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2'."
MessageDetail: "No type was found that matches the controller named 'deliveryitems'."
}

以相同方式创建和调用的其他 REST 方法都很好 - 为什么不是这个?它与其他的唯一不同之处是它是一个 HttpPost，而其他的是 HttpGet.这有那么大的不同吗?在尝试调用此 REST 方法时，我正在从 Postman 的下拉列表中选择发布".

Other REST methods that are created and called in the same way are found just fine - why not this one? The only thing it does not have in common with the others is that it is a HttpPost, whereas the others are HttpGet. Does that make that much of a difference? I am selecting "Post" from the dropdown in Postman when trying to call this REST method.

是的，它显然与作为 Post 并在 URI 中传递参数无关，因为我现在使用 HttpGet 方法得到了同样的东西:

Yes, it apparently has nothing to do with it being a Post and passing args in the URI, because I'm getting the same thing now with an HttpGet method:

{
Message: "No HTTP resource was found that matches the request URI     
'http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12'."
MessageDetail: "No action was found on the controller 'Department' that matches the request."
}

我是这样从邮递员那里调用它的:

I'm calling it from postman like so:

http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12

...它确实出现在我的控制器中:

...and it does indeed appear in my controller:

[HttpGet]
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
public List<Department> GetNDepartmentsFromID(int FirstId, int CountToFetch)
{
    return CCRService.GetNDepartmentsFromID(FirstId, CountToFetch);
}

更新 2

当我更改此代码时，我以为我即将解决它:

UPDATE 2

I thought I was about to solve it when I changed this code:

String.Format("api/department/getndeptsfromid/{0}/{1}", FirstId, CountToFetch)

...到这个:

String.Format("api/department/getndeptsfromid?firstId={0}&countToFetch={1}", FirstId, CountToFetch)

...但我仍然收到相同的错误消息...

...but I still get the same err msg...

我发现这也不起作用:

http://localhost:21609/api/delivery/invnumbyid?ID=33

...所以有一个明确的模式.我进行的每个包含 args/params 的 REST API 调用都以同样的方式失败；所有其他 (http://localhost:21609/api/deliveries/Count, http://localhost:21609/api/deliveryitems/count, http://localhost:21609/api/department/getall) 工作得很好.IOW，如果 URI 中没有参数，则发现该方法.如果有有个参数，那就没有.

...and so there is a definite pattern. EVERY REST API call I make that contains args/params fails in this same way; all of the others (http://localhost:21609/api/deliveries/Count, http://localhost:21609/api/deliveryitems/count, http://localhost:21609/api/department/getall) work just fine. IOW, if there are no args in the URI, the method is discovered. If there are args, it is not.

显然，我在 URI 中传递 args/vals 的方式有问题(在单个 arg 的情况下附加?="，在两个 args 的情况下附加"?=&=") 和/或我设置路由的方式有问题.具体来说，这种风格很有效:

So apparently there's either something wrong with how I'm passing the args/vals in the URI (appending "?=" in the case of a single arg and, in the case of two args "?=&=") and/or there's something wrong with how I set up the routing. Specifically, this style works:

[Route("api/Deliveries/Count")]

...而这种风格没有:

...whereas this style does not:

[Route("api/delivery/invnumbyid/{ID}")]

我会尽快奖励这个问题 - 这个 Gordiesque 结的解开者得 50 分，如果今天回答(在设置赏金之前)，则 100 分.

I will bountify this question ASAP - 50 points to the untangler of this Gordiesque knot, and 100 if it's answered today (prior to the setting up of the bounty).

我更改了路由以包含 arg 的数据类型，以便:

I changed the routing to include the data type of the arg so that this:

[Route("api/delivery/invnumbyid/{ID}")]

-变成这样:

[Route("api/delivery/invnumbyid/{ID:int}")]"

但还是失败了，咆哮:

{
Message: "No HTTP resource was found that matches the request URI 
'http://localhost:21609/api/delivery/invnumbyid?ID=45'."
MessageDetail: "No action was found on the controller 'Delivery' that matches the request."
}

然后，百灵鸟"，我尝试将其输入 Postman:

Then, "on a lark," I tried entering this into Postman:

http://localhost:21609/api/delivery/invnumbyid/45

...它成功了！(我一直认为它需要是http://localhost:21609/api/delivery/invnumbyid?ID=45")

...and it worked! (I had been thinking it needed to be "http://localhost:21609/api/delivery/invnumbyid?ID=45")

但 Postman 中的类似尝试:

But a similar attempt in Postman:

http://localhost:21609/api/department/getndeptsfromid/2/12/

...继续失败，并显示没有为一个或多个必需参数指定值".即使这是命中:

...continues to fail with "No value given for one or more required parameters." even though this is hit:

[HttpGet]
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
public List<Department> GetNDepartmentsFromID(int FirstId, int CountToFetch)
{
    return HHSService.GetNDepartmentsFromID(FirstId, CountToFetch);
}

...GetNDepartmentsFromID() 的参数具有预期的值(2 和 12)

...and the args to GetNDepartmentsFromID() has the expected vals (2 and 12)

更糟糕/更奇怪的是我使用http://localhost:21609/api/deliveryitems/InsertIntoPPTData/serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2"现在:


Even worse/weirder is the result I get with "http://localhost:21609/api/deliveryitems/InsertIntoPPTData/serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2" now:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html
    xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>IIS 8.0 Detailed Error - 404.0 - Not Found</title>
        <style type="text/css">
            <!-- 
body{margin:0;font-size:.7em;font-family:Verdana,Arial,Helvetica,sans-serif;} 
code{margin:0;color:#006600;font-size:1.1em;font-weight:bold;} 
.config_source code{font-size:.8em;color:#000000;} 
pre{margin:0;font-size:1.4em;word-wrap:break-word;} 
ul,ol{margin:10px 0 10px 5px;} 
ul.first,ol.first{margin-top:5px;} 
fieldset{padding:0 15px 10px 15px;word-break:break-all;} 
.summary-container fieldset{padding-bottom:5px;margin-top:4px;} 
legend.no-expand-all{padding:2px 15px 4px 10px;margin:0 0 0 -12px;} 
legend{color:#333333;;margin:4px 0 8px -12px;_margin-top:0px; 
font-weight:bold;font-size:1em;} 
a:link,a:visited{color:#007EFF;font-weight:bold;} 
a:hover{text-decoration:none;} 
h1{font-size:2.4em;margin:0;color:#FFF;} 
h2{font-size:1.7em;margin:0;color:#CC0000;} 
h3{font-size:1.4em;margin:10px 0 0 0;color:#CC0000;} 
h4{font-size:1.2em;margin:10px 0 5px 0; 
}#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:"trebuchet MS",Verdana,sans-serif; 
 color:#FFF;background-color:#5C87B2; 
}#content{margin:0 0 0 2%;position:relative;} 
.summary-container,.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;} 
.content-container p{margin:0 0 10px 0; 
}#details-left{width:35%;float:left;margin-right:2%; 
}#details-right{width:63%;float:left;overflow:hidden; 
}#server_version{width:96%;_height:1px;min-height:1px;margin:0 0 5px 0;padding:11px 2% 8px 2%;color:#FFFFFF; 
 background-color:#5A7FA5;border-bottom:1px solid #C1CFDD;border-top:1px solid #4A6C8E;font-weight:normal; 
 font-size:1em;color:#FFF;text-align:right; 
}#server_version p{margin:5px 0;} 
table{margin:4px 0 4px 0;width:100%;border:none;} 
td,th{vertical-align:top;padding:3px 0;text-align:left;font-weight:normal;border:none;} 
th{width:30%;text-align:right;padding-right:2%;font-weight:bold;} 
thead th{background-color:#ebebeb;width:25%; 
}#details-right th{width:20%;} 
table tr.alt td,table tr.alt th{} 
.highlight-code{color:#CC0000;font-weight:bold;font-style:italic;} 
.clear{clear:both;} 
.preferred{padding:0 5px 2px 5px;font-weight:normal;background:#006633;color:#FFF;font-size:.8em;} 
-->
        </style>
    </head>
    <body>
        <div id="content">
            <div class="content-container">
                <h3>HTTP Error 404.0 - Not Found</h3>
                <h4>The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.</h4>
            </div>
            <div class="content-container">
                <fieldset>
                    <h4>Most likely causes:</h4>
                    <ul>
                        <li>The directory or file specified does not exist on the Web server.</li>
                        <li>The URL contains a typographical error.</li>
                        <li>A custom filter or module, such as URLScan, restricts access to the file.</li>
                    </ul>
                </fieldset>
            </div>
            <div class="content-container">
                <fieldset>
                    <h4>Things you can try:</h4>
                    <ul>
                        <li>Create the content on the Web server.</li>
                        <li>Review the browser URL.</li>
                        <li>Check the failed request tracing log and see which module is calling SetStatus. For more information, click 
                            <a href="http://go.microsoft.com/fwlink/?LinkID=66439">here</a>. 
                        </li>
                    </ul>
                </fieldset>
            </div>
            <div class="content-container">
                <fieldset>
                    <h4>Detailed Error Information:</h4>
                    <div id="details-left">
                        <table border="0" cellpadding="0" cellspacing="0">
                            <tr class="alt">
                                <th>Module</th>
                                <td>&nbsp;&nbsp;&nbsp;IIS Web Core</td>
                            </tr>
                            <tr>
                                <th>Notification</th>
                                <td>&nbsp;&nbsp;&nbsp;MapRequestHandler</td>
                            </tr>
                            <tr class="alt">
                                <th>Handler</th>
                                <td>&nbsp;&nbsp;&nbsp;StaticFile</td>
                            </tr>
                            <tr>
                                <th>Error Code</th>
                                <td>&nbsp;&nbsp;&nbsp;0x80070002</td>
                            </tr>
                        </table>
                    </div>
                    <div id="details-right">
                        <table border="0" cellpadding="0" cellspacing="0">
                            <tr class="alt">
                                <th>Requested URL</th>
                                <td>&nbsp;&nbsp;&nbsp;http://localhost:21609/api/deliveryitems/InsertIntoPPTData/serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2</td>
                            </tr>
                            <tr>
                                <th>Physical Path</th>
                                <td>&nbsp;&nbsp;&nbsp;C:projectgitCStoreHHS.APIapideliveryitemsInsertIntoPPTDataserNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2</td>
                            </tr>
                            <tr class="alt">
                                <th>Logon Method</th>
                                <td>&nbsp;&nbsp;&nbsp;Anonymous</td>
                            </tr>
                            <tr>
                                <th>Logon User</th>
                                <td>&nbsp;&nbsp;&nbsp;Anonymous</td>
                            </tr>
                            <tr class="alt">
                                <th>Request Tracing Directory</th>
                                <td>&nbsp;&nbsp;&nbsp;C:UsersclayDocumentsIISExpressTraceLogFilesHHS.API</td>
                            </tr>
                        </table>
                        <div class="clear"></div>
                    </div>
                </fieldset>
            </div>
            <div class="content-container">
                <fieldset>
                    <h4>More Information:</h4> 
  This error means that the file or directory does not exist on the server. Create the file or directory and try the request again. 

                    <p>
                        <a href="http://go.microsoft.com/fwlink/?LinkID=62293&amp;IIS70Error=404,0,0x80070002,7601">View more information &raquo;</a>
                    </p>
                </fieldset>
            </div>
        </div>
    </body>
</html> 

¡Que恶魔！
我悲伤地微笑着记得，总是有一只石像鬼躲在沙沙作响的窗帘后面(Robinson Jeffers 和 Edgar Allen Poe 似乎正在摔跤).苍白的闲逛……
I sadly smilingly remember that there is always one more gargoyle hiding behind the rustling curtain (where Robinson Jeffers and Edgar Allen Poe are seemingly wrestling). Palely loitering...
好的，这里换个说法:
来自 Postman，如果我使用此 URL:
From Postman, if I use this URL: 
http://localhost:21609/api/department/getndeptsfromid/2/12/

我把它做成了这个方法:
I make it into this method:
[HttpGet]
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
public List<Department> GetNDepartmentsFromID(int FirstId, int CountToFetch)
{
    return HHSService.GetNDepartmentsFromID(FirstId, CountToFetch);
}

...FirstId 的值为 2，CountToFetch 的值为 12(正如我所期望的那样).但随后，邮递员将我的包裹发回，并附上500 No value given for one or more required parameters."
...where the value of FirstId is 2, and the value of CountToFetch is 12 (as I would expect them to be). But then, Postman sends back my package with the notation, "500 No value given for one or more required parameters."
¡两个参数显然都通过了！
¡Que demonios! Both parameters were obviously passed!
如果我使用看起来更正确的 URI:
If I use a URI that would seem more correct:
http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12

我明白了:
{
Message: "No HTTP resource was found that matches the request URI   
'http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12'."
MessageDetail: "No action was found on the controller 'Department' that matches the request."
}

但这是我提供的路线:
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]

...所以我会说我确实在控制器上提供了一个匹配的操作.顺便说一句，如果我只是将其作为 URI 输入 Postman:
...and so I would say that I did, in fact, provide a matching action on the controller.And, BTW, if I just enter this as the URI into Postman:
http://localhost:21609/api/department/getndeptsfromid

...然后使用 Postman 的URL Parameter Key/Value"接口添加这些，它会生成与上面完全相同的 URL，如下所示:
...and then use Postman's "URL Parameter Key / Value" interface to add those, it generates the exact same URL as above, as can be seen here:

...结果完全相同.
我只能再说一遍(请原谅我的Las Uvas de la Ira"-灵感来自西班牙语):¡Que demoios！
I can only say it again (pardon my "Las Uvas de la Ira"-inspired Spanish): ¡Que demonios!
推荐答案
您的问题与 POST/GET 无关，而仅与您在 RouteAttribute 中指定参数的方式有关.为了确保这一点，我在示例中添加了对这两个动词的支持.
Your problems have nothing to do with POST/GET but only with how you specify parameters in RouteAttribute. To ensure this, I added support for both verbs in my samples.
让我们回到两个非常简单的工作示例.
Let's go back to two very simple working examples.
[Route("api/deliveryitems/{anyString}")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsOne(string anyString)
{
    return Request.CreateResponse<string>(HttpStatusCode.OK, anyString);
}

还有
[Route("api/deliveryitems")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsTwo(string anyString = "default")
{
    return Request.CreateResponse<string>(HttpStatusCode.OK, anyString);
}

第一个示例表明anyString"是一个路径段参数(URL 的一部分).
The first sample says that the "anyString" is a path segment parameter (part of the URL).
第一个示例 URL 是:
First sample example URL is:
localhost:xxx/api/deliveryItems/dkjd;dslkf;dfk;kkklm;oeop返回 "dkjd;dslkf;dfk;kkkklm;oeop"
第二个示例表明anyString"是一个查询字符串参数(此处为可选，因为已提供默认值，但您可以通过简单地删除默认值使其变为非可选).
The second sample says that the "anyString" is a query string parameter (optional here since a default value has been provided, but you can make it non-optional by simply removing the default value).
第二个示例 URL 是:
Second sample examples URL are:
localhost:xxx/api/deliveryItems?anyString=dkjd;dslkf;dfk;kkklm;oeop返回 "dkjd;dslkf;dfk;kkkklm;oeop"
返回默认"
当然，您可以让它变得更复杂，就像第三个示例一样:
Of course, you can make it even more complex, like with this third sample:
[Route("api/deliveryitems")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsThree(string anyString, string anotherString = "anotherDefault")
{
    return Request.CreateResponse<string>(HttpStatusCode.OK, anyString + "||" + anotherString);
}

第三个示例 URL 是:
Third sample examples URL are:
localhost:xxx/api/deliveryItems?anyString=dkjd;dslkf;dfk;kkklm;oeop返回 "dkjd;dslkf;dfk;kkkklm;oeop||anotherDefault"
返回未找到与请求 URI 匹配的 HTTP 资源 ..."(参数 anyString 是必需的)


returns "No HTTP resource was found that matches the request URI ..." (parameter anyString is mandatory)

返回 "dkjd;dslkf;dfk;kkkklm;oeop||bluberb"
注意参数已经颠倒了，没关系，第一个例子的URL-style"是不可能的
什么时候应该使用路径段或查询参数?这里已经给出了一些建议:REST API 最佳实践:在哪里放置参数?
When should you use path segment or query parameters? Some advice has already been given here:
REST API Best practices: Where to put parameters?

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为什么“没有找到与请求 URI 匹配的 HTTP 资源"?这里?

问题描述

更新 2

UPDATE 2

推荐答案

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