blocks|key|40548|text|使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|40549|[OperationContract]
[WebInvoke(Method+=+"POST",+ResponseFormat+=+WebMessageFormat.Json,+UriTemplate+=+"abcxx")]|code-block|syntax|javascript|40550|在声明方法的服务页面中，以大写字母键入POST。我想你是在用小写字母打字。|offset|length|style|CODE|40551|entityMap^0|0|0|J|4|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Use:

<pre><code>[OperationContract]
[WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json, UriTemplate = "abcxx")]
</code></pre>

At your service page where you declare your method, type <code>POST</code> in upper case. I think you are typing in lowercase.

blocks|key|2721998|text|我也面临着这个问题。此错误的根本原因可能是web配置文件中的终结点地址不正确。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2721999|这是我错误的web配置|2722000|<services>
++<service+behaviorConfiguration="mexBehavior"+name="sample.sample">
++++<endpoint+address="http://xxx.xxx.x.xxx:9335"+binding="basicHttpBinding"+contract="sample.Isamplebase"+/>
++++<host>
++++++<baseAddresses>
++++++++<add+baseAddress="http://xxx.xxx.x.xxx:9335"+/>
++++++</baseAddresses>
++++</host>
++</service>
</services>|code-block|syntax|javascript|2722001|应该是这样的|2722002|<services>
++<service+behaviorConfiguration="mexBehavior"+name="sample.sample">
++++<endpoint+address="http://xxx.xxx.x.xxx:9335/sample.svc"+binding="basicHttpBinding"+contract="sample.Isamplebase"+/>
++++<host>
++++++<baseAddresses>
++++++++<add+baseAddress="http://xxx.xxx.x.xxx:9335"+/>
++++++</baseAddresses>
++++</host>
++</service>
</services>|2722003|现在它工作得很好。最好的是你的..祝好运。|2722004|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I too face this issue. Root cause of this error is may be mistook endpoint address in web config file.. 

This is my mistaken web config

<pre><code>&lt;services&gt;
 &lt;service behaviorConfiguration="mexBehavior" name="sample.sample"&gt;
 &lt;endpoint address="http://xxx.xxx.x.xxx:9335" binding="basicHttpBinding" contract="sample.Isamplebase" /&gt;
 &lt;host&gt;
 &lt;baseAddresses&gt;
 &lt;add baseAddress="http://xxx.xxx.x.xxx:9335" /&gt;
 &lt;/baseAddresses&gt;
 &lt;/host&gt;
 &lt;/service&gt;
&lt;/services&gt;
</code></pre>

It should be like this 

<pre><code>&lt;services&gt;
 &lt;service behaviorConfiguration="mexBehavior" name="sample.sample"&gt;
 &lt;endpoint address="http://xxx.xxx.x.xxx:9335/sample.svc" binding="basicHttpBinding" contract="sample.Isamplebase" /&gt;
 &lt;host&gt;
 &lt;baseAddresses&gt;
 &lt;add baseAddress="http://xxx.xxx.x.xxx:9335" /&gt;
 &lt;/baseAddresses&gt;
 &lt;/host&gt;
 &lt;/service&gt;
&lt;/services&gt;
</code></pre>

Now its working fine... Best is yours.. Good Luck.

blocks|key|2511727|text|我敢打赌，Paramter1、用户名或密码都不正确--换句话说，您试图使用的用户is不存在。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2511728|服务器返回404Not+Found，不是因为你没有找到正确的API方法，而是因为你请求的对象不存在。|2511729|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

My bet is that either Paramter1 or username or password are incorrect - in other words the user you were trying to use doid not exist. 

The server returns 404 Not Found, not because you didn't hit the right API method, but because the object you are asking for doesn't exist.

blocks|key|2722078|text|查看您的代码，您创建您的URL并以url表单编码的形式传递数据，但随后您将内容类型设置为application/json。我想你也可以：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2722079|2722080|旨在使用application/x-www-form-urlencoded作为|ordered-list-item|2722081|的内容类型|2722082|或|2722083|2722084|不打算发送URL中的数据，而是需要为您的帖子|2722085|设置一个JSON主体。|2722086|entityMap^0|18|G|0|0|4|X|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|11|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|12|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|I|7|14|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

Looking at your code, you create your URL and pass data as url form encoded, but then you set the content type as <code>application/json</code>. I'd think you either:

<ol>
<li>Meant to use <code>application/x-www-form-urlencoded</code> as the content type</li>
</ol>

or

<ol start="2">
<li>Meant to not send the data in the URL, and instead need to set a JSON body for your POST</li>
</ol>

After reading different answers against the same thread i tried almost all the options mentioned in their discussions however i am still getting error:

Error No1: <code>The remote server returned an error: (404) Not Found.</code> OR

Error No2:<code>The remote server returned an error: (405) Method Not Allowed</code>.

Below is my code:

<pre><code>var httpWebRequest = (HttpWebRequest)WebRequest.Create("URL?Paramter1=pc&amp;user=u1&amp;password=p1");
httpWebRequest.ContentType = "application/json; charset=utf-8";
httpWebRequest.Method = "POST";
httpWebRequest.Accept = "application/json";
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
</code></pre>

I receive error on the last line i.e. 

<pre><code>var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
</code></pre>

If i use <code>httpWebRequest.Method="GET"</code> i receive the error number 1 as mentioned above and if i use <code>httpWebRequest.Method="Post"</code> i receive the error number 2.

The remote server returned an error: "(405) Method Not Allowed"

服务器

JSON

在阅读了同一主题的不同答案后，我几乎尝试了他们讨论中提到的所有选项，但我仍然收到错误：Error No1：The remote server returned an error: (404) Not Found. ORError No2The remote server returned an error: (405)...

问远程服务器返回错误："(405)方法不允许“
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