I'm using RUST and Reqwest to call the following Response from an API:
Shell:
Ok("{\"SETTLEMENTDATE\":\"2019-10-24T12:50:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":68.0464}\n"{\"SETTLEMENTDATE\":\"2019-10-24T12:55:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":67.4408}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:00:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":87.2918}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:05:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":98.1406}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:10:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":87.4789}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:15:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":90.2434}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:20:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":89.8617}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:25:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":97.2639}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:30:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":100.493}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:35:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":93.7984}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:40:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":85.1182}\n
{\"SETTLEMENTDATE\":\"2019-10-24T13:45:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":91.4173}\n\n",
)
I want to parse this output and only print the 'RRP.DISPATCHPRICE0' value in the first array (the figure in BOLD below) that I recieve from the call:
Ok("{\"SETTLEMENTDATE\":\"2019-10-24T12:50:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":68.0464}\n" ...
I'm still very new to RUST and trying to work out how I should best achieve this. Could anyone in the community here help with some recommendations/help.
What have I tried:
I've been working with the following code:
extern crate serde_json;
use serde_json::Value;
fn main() {
let data: Value = serde_json::from_str(
// Ok(
"{\"SETTLEMENTDATE\":\"2019-10-24T12:50:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":68.0464}\n"
// {\"SETTLEMENTDATE\":\"2019-10-24T12:55:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":67.4408}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:00:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":87.2918}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:05:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":98.1406}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:10:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":87.4789}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:15:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":90.2434}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:20:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":89.8617}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:25:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":97.2639}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:30:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":100.493}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:35:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":93.7984}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:40:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":85.1182}\n
// {\"SETTLEMENTDATE\":\"2019-10-24T13:45:00Z\",\"REGIONID\":\"VIC1\",\"RRP.DISPATCHPRICE0\":91.4173}\n\n",
// )
)
.unwrap();
println!("data: {:?}", data);
let obj = data.as_object().unwrap();
let RRP = obj.get("RRP.DISPATCHPRICE0").unwrap();
println!("Value: {}", RRP);
}
The above prints out the Number I want and works nicely but I can't get it to work when I comment in the rest of the 'Response'.
Please help! :)
Your string as a whole is not valid JSON because it contains more than one object. You can get around it by using a StreamDeserializer to extract the objects one by one:
for value in Deserializer::from_str (data).into_iter::<Value>() {
println!("value: {:?}", value.unwrap());
}