Hello everyone,
I have a requirement to send a multipart/form-data request from Mule to a Java API. In Postman, this works correctly — I can send a form-data request containing a JSON object and upload one or more PDF files using the same key "files". The Java API receives the request and responds as expected.
In Mule, I receive the binary content in the request and need to forward the same content to the Java API. However, when I trigger the API using the DataWeave code below, the Java API only receives the headers — it does not receive the Mule payload.
%dw 2.0
import dw::module::Multipart
output multipart/form-data boundary="--abc123"
var fileList = requestPayload.documents
---
{
parts: {
json: Multipart::field({
name: "json",
value: vars.jsonObject, //I tried serialized json object as well, since Postman is sending in serialized format
mime: "application/json"
}),
(fileList map ((file) -> {
files: Multipart::field({
name: "files",
value: file.content //binary data
mime: "application/pdf", //default is application/octet-steam
fileName:
file.name
})
}))
}
}
Please let me know if I am missing anything.
#Trailhead Challenges #TrailblazerCommunity
Hi @harakishore kommanaboina - You don’t need to manually set the boundary. Mule handles it automatically.
%dw 2.0
output multipart/form-data
---
{
parts: {
json: {
headers: { "Content-Disposition": "form-data; name=\"json\"" },
content: write(vars.jsonObject, "application/json")
},
files: payload.documents map (file) -> {
headers: { "Content-Disposition": "form-data; name=\"files\"; filename=\"" ++ file.name ++ "\"" },
content: file.content
}
}
}
