我的 Controller 中有这样的代码:
[Route("api/deliveryitems/InsertIntoPPTData/{stringifiedRecord}")]
...我是通过 Postman 调用它的:
http://localhost:21609/api/deliveryitems/InsertIntoPPTData?
stringifiedRecord=serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2
...但得到:
{
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'."
}
发现以相同方式创建和调用的其他 REST 方法很好 - 为什么不是这个？它与其他人唯一不同的是它是一个 HttpPost，而其他人是 HttpGet。这有那么大的不同吗？尝试调用此 REST 方法时，我正在从 Postman 的下拉列表中选择“发布”。
更新
是的，它显然与作为 Post 并在 URI 中传递 args 无关，因为我现在使用 HttpGet 方法得到相同的结果:
{
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."
}
我像这样从 postman 那里调用它:
http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12
...它确实出现在我的 Controller 中:
[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:
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...
更新 3
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。我所做的每个包含 args/params 的 REST API 调用都以同样的方式失败；所有其他人(
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args，则发现该方法。如果有 args，则不是。因此，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，这种风格有效:
[Route("api/Deliveries/Count")]
...而这种风格不会:
[Route("api/delivery/invnumbyid/{ID}")]
我会尽快给这个问题加分——50 分给这个 Gordiesque 结的解开者，如果今天(在设置赏金之前)回答了 100 分。
更新 4
我更改了路由以包含 arg 的数据类型，以便:
[Route("api/delivery/invnumbyid/{ID}")]
-变成了这个:
[Route("api/delivery/invnumbyid/{ID:int}")]"
但它还是失败了，咆哮道:
{
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，“在 lark 上”，我尝试将其输入 Postman:
http://localhost:21609/api/delivery/invnumbyid/45
...它奏效了! (我一直认为它需要是“
http://localhost:21609/api/delivery/invnumbyid?ID=45”)但是在 Postman 中也有类似的尝试:
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提供值”。即使这是命中:
[HttpGet]
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
public List<Department> GetNDepartmentsFromID(int FirstId, int CountToFetch)
{
return HHSService.GetNDepartmentsFromID(FirstId, CountToFetch);
}
...并且 GetNDepartmentsFromID() 的参数具有预期的值(2 和 12)
更糟糕/更奇怪的是我现在用“
http://localhost:21609/api/deliveryitems/InsertIntoPPTData/serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2”得到的结果:<!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> IIS Web Core</td>
</tr>
<tr>
<th>Notification</th>
<td> MapRequestHandler</td>
</tr>
<tr class="alt">
<th>Handler</th>
<td> StaticFile</td>
</tr>
<tr>
<th>Error Code</th>
<td> 0x80070002</td>
</tr>
</table>
</div>
<div id="details-right">
<table border="0" cellpadding="0" cellspacing="0">
<tr class="alt">
<th>Requested URL</th>
<td> 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> C:\project\git\CStore\HHS.API\api\deliveryitems\InsertIntoPPTData\serNum77;tx2;siteNum2;bla2.xml;ppt_user2;tx_memo2;file_beg2;file_end2</td>
</tr>
<tr class="alt">
<th>Logon Method</th>
<td> Anonymous</td>
</tr>
<tr>
<th>Logon User</th>
<td> Anonymous</td>
</tr>
<tr class="alt">
<th>Request Tracing Directory</th>
<td> C:\Users\clay\Documents\IISExpress\TraceLogFiles\HHS.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&IIS70Error=404,0,0x80070002,7601">View more information »</a>
</p>
</fieldset>
</div>
</div>
</body>
</html>
¡
我悲伤地微笑着记得，在沙沙作响的窗帘后面总是藏着一只石像鬼(罗宾逊杰弗斯和埃德加艾伦坡似乎在摔跤)。苍白的游荡...
更新 5
好吧，这里有不同的说法:
来自 postman ，如果我使用这个 URL:
http://localhost:21609/api/department/getndeptsfromid/2/12/
我把它变成了这个方法:
[HttpGet]
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
public List<Department> GetNDepartmentsFromID(int FirstId, int CountToFetch)
{
return HHSService.GetNDepartmentsFromID(FirstId, CountToFetch);
}
...其中 FirstId 的值为 2，CountToFetch 的值为 12(正如我所期望的那样)。但随后， postman 发回了我的包裹，并附有“ 500 没有为一个或多个必需参数提供值。”
¡这两个参数显然都通过了!
如果我使用一个看起来更正确的 URI:
http://localhost:21609/api/department/getndeptsfromid?firstId=2&countToFetch=12
我得到:
{
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."
}
然而，这是我提供的路线:
[Route("api/department/getndeptsfromid/{firstId}/{countToFetch}")]
...所以我会说我确实在 Controller 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:
http://localhost:21609/api/department/getndeptsfromid
...然后使用 Postman 的“URL Parameter Key/Value”接口(interface)添加这些，它生成与上面完全相同的 URL，如下所示:
...并得到完全相同的结果。
我只能再说一遍(请原谅我受“Las Uvas de la Ira”启发的西类牙语): ¡
最佳答案
您的问题与 POST/GET 无关，而仅与您如何在 RouteAttribute 中指定参数有关。 .为确保这一点，我在示例中添加了对这两个动词的支持。
让我们回到两个非常简单的工作示例。
[Route("api/deliveryitems/{anyString}")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsOne(string anyString)
{
return Request.CreateResponse<string>(HttpStatusCode.OK, anyString);
}
和
[Route("api/deliveryitems")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsTwo(string anyString = "default")
{
return Request.CreateResponse<string>(HttpStatusCode.OK, anyString);
}
第一个示例表示“
anyString”是路径段参数(URL 的一部分)。第一个示例 URL 是:
xxx/api/deliveryItems/dkjd;dslkf;dfk;kkklm;oeop"dkjd;dslkf;dfk;kkklm;oeop" 第二个示例表示“
anyString”是一个查询字符串参数(这里是可选的，因为已经提供了默认值，但您可以通过简单地删除默认值来使其不可选)。第二个示例示例 URL 是:
xxx/api/deliveryItems?anyString=dkjd;dslkf;dfk;kkklm;oeop"dkjd;dslkf;dfk;kkklm;oeop" xxx/api/deliveryItems"default" 当然，你可以让它更复杂，就像第三个示例:
[Route("api/deliveryitems")]
[HttpGet, HttpPost]
public HttpResponseMessage GetDeliveryItemsThree(string anyString, string anotherString = "anotherDefault")
{
return Request.CreateResponse<string>(HttpStatusCode.OK, anyString + "||" + anotherString);
}
第三个示例示例 URL 是:
xxx/api/deliveryItems?anyString=dkjd;dslkf;dfk;kkklm;oeop"dkjd;dslkf;dfk;kkklm;oeop||anotherDefault" xxx/api/deliveryItemsanyString 是必需的)xxx/api/deliveryItems?anotherString=bluberb&anyString=dkjd;dslkf;dfk;kkklm;oeop"dkjd;dslkf;dfk;kkklm;oeop||bluberb" 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 Best practices: Where to put parameters?
关于c# - 为什么这里是 "No HTTP resource was found that matches the request URI"？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24769379/