We come across the scenario, where we will use POSTMAN software tool to examine the working of external API. Postman is a simple GUI for sending HTTP requests and viewing responses. REST services are available in sage x3 that returns data in a JSON format. In this blog, we are going to visualize the mapping of fields from postman to x3 Rest web services.
Example: In Postman IDE,
— Request is the simplest way possible to make http calls.
Request contains of Request Method, Request URL, Authorization, Request
Header, Request Body.
Request Method: Request method defines the type of request to be made.
There are mainly four request methods, used for creating/updating, retrieving
and deleting data.
- POST Request — For Creating Or
- PUT Request — For
- GET Request — For
- DELETE Request — For Deleting data.
Post Method, A POST request is a method that is used when we need to
send some additional information inside the body of the request to the server.
Request URL:URL to make the http request. Enter the complete URL on URL
c. Authorization: An authorization token, included with requests, is used to identify the requester. Select the Basic Auth on Type field and enter valid Username and Password.
Request Header: In request headers it contains key-value of the
— A content-type describes the format of object data. Content-type, i.e.,
application/json which is used for the requests and responses
Request Body: Body Field contains
the data, depends on type of request method, to be sent with request, raw form
of data is used for sending request.
2.HTTP Response — On click of Send Button, Response will display in JSON Format.
REST Web services
All->Administration->Administration->Rest Web services
Name Field : Enter any user defined field
Base URL : Enter
the domain name of the URL
Enter only domain name: http://reqres.in
from full path: http://reqres.in/api/users
Content-Type: Choose Json
Authentication: Choose Basic Authentication and Enter credentials ,Username and
password used for authenticate the API
Parameters: PARAM tab in postman is mapped with Parameters fields in X3 as Key value Pair
Code Snippet to call external API
##Declaration of Variables used in executing
LOCAL CHAR YAPI(250),YURI(250),PCOD(100)(1..100),
LOCAL CLBFILE YMTD,YREQBODY,YRESBODY,RESHEAD(0)
LOCAL CLBFILE RESBODY
LOCAL INTEGER RETVAL
##Declaring Header ,Method and Path of URL
##Call EXEC_REST_WS Method from
ASYRRESTCLI library function
is specified in Key-value pair, Header should contain authorization and
the variable HCOD(1)- Header code of array index 1 to Authorization.
the variable HVAL(1) -Header variable of array index 1 to username and password
separated with Colon.
the variable HCOD(2)- Header code of array index 2 to Content-type.
the variable HVAL(2)- Header variable of array index 2 to application/Json.
the variable YMTD-Type of Method used to
string value “POST”
the variable YAPI -REST web service Name to ” CreateID “
the variable YURI with the remaining part of URL
declare Response body variable
Assign the YREQBODY variable to input
EXEC_REST_WS function from ASYRRESTCLI library with all required parameters and
will return status code as integer value which shows success or failure and
result json format is stored in YRESBODY Variable.
there is an requirement of sending Username and password directly through code
without passing in REST webservices. Explanation with scenario,
Login authentication screen, if it is successful then pass those credentials to
the REST web services through code, In that case Header variable should contain
Code HCOD(1) as “Authorization” and
Val HVAL(1) as ” Basic MTcwZWU5MmEyODOTo= “
“Basic” followed by BASE 64 format of Username: Password
the blog for the ASYRRESTCLI function and its parameters to be passed for the
“The narration of function and its parameter used to call an external/outgoing REST web service from ASYRRESTCLI library”
Few List of Status
Code and its description
1.200 -Successful request.
2.201 -Successful request and data
3.204 -Empty Response.
4.400 -Bad Request.
5.401 -Unauthorized access
6.403 -Forbidden, Access denied.
7.404 -Data not found.
8.405 -Method Not Allowed or
Requested method is not supported.
9.500 -Internal Server Error.
Response from API while executing the code above in X3.
This blog helps us to understand the mapping of fields from POSTMAN tool to X3 REST web services and code used to call an external API by using EXEC_REST_ES function by passing credentials in header variables.
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