readUrl
ThereadUrlfunction is similar to the read function, but it accepts URL as an input and the remaining parameters remain the same as the read function.
Parameters
| Name | Description |
|---|---|
url | The URL string to read. It also accepts a classpath-based URL. for example: classpath://myfolder/myFile.txt where myFolder is located under src/main/resources in a Mule project. Other than the URL, readURL accepts the same arguments as read. |
contentType | A supported format (or MIME type). Default: application/dw. |
readerProperties | Optional: Sets reader configuration properties. For other formats and reader configuration properties, see Supported Data Formats. |
Example
In this example, the readUrl function will read the data from the HTTP URL.
Source
%dw 2.0
output application/json
---
readUrl("https://jsonplaceholder.typicode.com/users/5","application/json")Output
{
"id": 5,
"name": "Chelsey Dietrich",
"username": "Kamren",
"email": "Lucio_Hettinger@annie.ca",
"address": {
"street": "Skiles Walks",
"suite": "Suite 351","city": "Roscoeview",
"zipcode": "33263",
"geo": {
"lat": "-31.8129",
"lng": "62.5342"
}
},
"phone": "(254)954-1289",
"website": "demarco.info",
"company": {
"name": "Keebler LLC"
"catchPhrase": "User-centricfault-tolerantsolution",
"bs":
"revolutionizeend-to-end systems"
22
}
23
}Now, we want to write DataWeave transformation for reading the name, username, and email instead of returning full JSON payload.
Source
%dw 2.0
output application/json
var inputData=readUrl("https://jsonplaceholder.typicode.com/users/5","application/json")
---
{
name: inputData.name,
username: inputData.username,
email: inputData.email
}
Output
{
"name": "Chelsey Dietrich",
"username": "Kamren",
"email": "Lucio_Hettinger@annie.ca"
}Note: Also read about C Program – Structure & Keywords in C.
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