(Lianja) curl POST with JSON Input and JSON Output

See more CURL Examples

Note: This example requires Chilkat v11.5.0 or greater.

Chilkat Lianja Extension Download Chilkat Lianja Extension

llSuccess = .F.

// Run the following curl command

//  curl -X POST https://httpbin.org/post \
//       -H "Content-Type: application/json" \
//       -d '{
//             "title": "foo",
//             "body": "bar",
//             "userId": 1
//           }'

// The backslashes at the end of lines are not required.  Chilkat ignores them if present.
loSbTargetCurl = createobject("CkStringBuilder")
loSbTargetCurl.AppendLn(' curl -X POST https://httpbin.org/post \")
loSbTargetCurl.AppendLn('      -H "Content-Type: application/json" \")
loSbTargetCurl.AppendLn("      -d '{")
loSbTargetCurl.AppendLn('            "title": "foo",')
loSbTargetCurl.AppendLn('            "body": "bar",')
loSbTargetCurl.AppendLn('            "userId": 1')
loSbTargetCurl.AppendLn("          }'")

loHttpCurl = createobject("CkHttpCurl")

// Run the curl command.
llSuccess = loHttpCurl.DoYourThing(loSbTargetCurl.GetAsString())
if (llSuccess = .F.) then
    ? loHttpCurl.LastErrorText
    release loSbTargetCurl
    release loHttpCurl
    return
endif

loResponseJson = createobject("CkJsonObject")
loResponseJson.EmitCompact = .F.

loHttpCurl.GetResponseJson(loResponseJson)

lnStatusCode = loHttpCurl.StatusCode
? "response status code: " + str(lnStatusCode)

? loResponseJson.Emit()

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": "{\r\n            \"title\": \"foo\",\r\n            \"body\": \"bar\",\r\n            \"userId\": 1\r\n          }",
//   "files": {},
//   "form": {},
//   "headers": {
//     "Content-Length": "96",
//     "Content-Type": "application/json",
//     "Host": "httpbin.org",
//     "X-Amzn-Trace-Id": "Root=1-69e8db8b-459b3bdf7b7a3bc749184968"
//   },
//   "json": {
//     "body": "bar",
//     "title": "foo",
//     "userId": 1
//   },
//   "origin": "123.222.222.222",
//   "url": "https://httpbin.org/post"
// }

// ----------------------------------------------------------------------------------
// Another example:

// curl -X POST https://postman-echo.com/post \
//      -H "Content-Type: application/json" \
//      -d '{"foo":"bar"}'

lcTargetCurl = 'curl -X POST https://postman-echo.com/post -H "Content-Type: application/json" -d '{"foo":"bar"}''

// Run the curl command.
llSuccess = loHttpCurl.DoYourThing(lcTargetCurl)
if (llSuccess = .F.) then
    ? loHttpCurl.LastErrorText
    release loSbTargetCurl
    release loHttpCurl
    release loResponseJson
    return
endif

loHttpCurl.GetResponseJson(loResponseJson)

lnStatusCode = loHttpCurl.StatusCode
? "response status code: " + str(lnStatusCode)

? loResponseJson.Emit()

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": {
//     "foo": "bar"
//   },
//   "files": {},
//   "form": {},
//   "headers": {
//     "host": "postman-echo.com",
//     "content-length": "13",
//     "content-type": "application/json",
//     "x-forwarded-proto": "https",
//     "accept-encoding": "gzip, br"
//   },
//   "json": {
//     "foo": "bar"
//   },
//   "url": "https://postman-echo.com/post"
// }


release loSbTargetCurl
release loHttpCurl
release loResponseJson