Make POST request from Mule ESB - post

Question

I'm stuck with making correct HTTP request to web server (running under PHP).
I need to send POST request with property json and some value, for example { "employee_id":191, "date":"2015-08-11", "time":"14:26:00" }.
It's working if I make a request from Postman or cURL for example, the request will look something like this
POST /DeliveryDetails/ HTTP/1.1
Host: 192.168.0.100:80
Cache-Control: no-cache
Content-Type: application/x-www-form-urlencoded
json=%7B+%22employee_id%22%3A191%2C+%22date%22%3A%222015-08-11%22%2C+%22time%22%3A%2214%3A26%3A00%22+%7D
Also I can send with conntent type multipart/form-data
POST /DeliveryDetails/ HTTP/1.1
Host: 192.168.0.100:80
Cache-Control: no-cache
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
----WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="json"
{ "employee_id":191, "date":"2015-08-11", "time":"14:26:00" }
----WebKitFormBoundary7MA4YWxkTrZu0gW
or with cURL
curl -d "json={ \"employee_id\":191, \"date\":\"2015-08-11\", \"time\":\"14:26:00\" }" http://192.168.0.100:80/DeliveryDetails/
But when I'm trying to make request from Mule ESB it's not working since the request is incorrect.
The flow looks like this
<sub-flow name="my-flow">
<logger message="Request: #[payload]" level="INFO" doc:name="Log request"/>
<http:request config-ref="request-HTTP" path="/DeliveryDetails/" method="POST" doc:name="HTTP call" />
<object-to-string-transformer doc:name="Object to String"/>
<logger message="Response: #[payload]" level="INFO" doc:name="Log response"/>
</sub-flow>
#[payload] contains the value { "employee_id":191, "date":"2015-08-11", "time":"14:26:00" }
and if I do it like this the body would simply contain it (without additional information like Content-Type, I think thats the problem).
I have tried to add query-param
<http:request-builder >
<http:query-param paramName="json" value="#[payload]" />
</http:request-builder>
or use message-properties-transformer
<message-properties-transformer doc:name="Message Properties">
<add-message-property key="json" value="#[payload]"/>
</message-properties-transformer>
but the result is still the same.
EDIT
The HTTP configuration look like this
<http:request-config name="request-HTTP"
host="192.168.0.100"
port="80"
doc:name="HTTP Request Configuration" />
Also tried to set Content-Type with
<set-property propertyName="Content-Type" value="application/x-www-form-urlencoded" doc:name="Property"/>
and
<http:request-builder>
<http:query-param paramName="json" value="#[payload]"/>
<http:header headerName="Content-Type" value="application/x-www-form-urlencoded"/>
</http:request-builder>
However the body I'm receiving is still just payload, without other properties for example json= or Content-Disposition: form-data; name="json"

Answer 1

Since the payload is just the JSON data, that's what will be sent in most scenarios. Your curl example sets the "json=" part to the body. So there are a couple of options here:
Modify the payload to add the body you want as you do with curl and set the Content-Type to application/x-www-form-urlencoded.
Send multipart content by adding the data as an attachment. In your case try:
<sub-flow name="my-flow">
<logger message="Request: #[payload]" level="INFO" doc:name="Log request"/>
<set-attachment attachmentName="json" value="#[payload]" contentType="application/json"/>
<http:request config-ref="request-HTTP" path="/DeliveryDetails" method="POST" doc:name="HTTP call" />
<object-to-string-transformer doc:name="Object to String"/>
<logger message="Response: #[payload]" level="INFO" doc:name="Log response"/>
</sub-flow>
Set the payload to be a map containing a key "json" with the payload as value. This should make Mule send a form request without you setting the Content-Type explicitly to application/x-www-form-urlencoded.
HTH.

Answer 2

You need to put path="/DeliveryDetails"
You can follow the following config :-
<http:request-config name="HTTP_Request_Configuration" host="192.168.0.100" port="80" doc:name="HTTP Request Configuration"/>
and in the Mule flow or sub flow and set the Content-Type as follows:-
<set-property propertyName="Content-Type" value="application/json" doc:name="Property"/>
<http:request config-ref="HTTP_Request_Configuration" path="/DeliveryDetails" method="POST" doc:name="HTTP call" />
<logger message="Input JSON message ****** #['\n'+ message.payloadAs(java.lang.String)]" level="INFO" doc:name="Logger"/>
You can configure the Content-Type here as per your requirement
You can also refer here :- How do I force the HTTP Request Connector to use a certain Content-Type?