Rust : 如何通过Web API调用JoinQuant 的量化数据?_rust量化

前面，我试了Julia调用 JoinQuant的web api 的数据。兴奋之余，也试了一下Rust。
Rust的 reqwest库不太熟悉，用了更长的一点时间。但总体上用法差不多。

一、相关的库

[dependencies]
reqwest = "0.9.10"
serde_json = "1.0"
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关于reqwest库，除了github上的文档，建议参考，可以了解更清楚明了。
http://siciarz.net/24-days-rust-reqwest/

二、相关代码：

use std::time::Duration;
use std::{thread, time};
extern crate reqwest;
extern crate serde_json;
use std::collections::HashMap;
use std::io::Read;
fn get_token()->String{
    let mut data = HashMap::new();
    data.insert("method", "get_token");
    data.insert("mob", "13761618222");
    data.insert("pwd", "618222");
    let mut _res= reqwest::Client::new()
        .post("https://dataapi.joinquant.com/apis")
        .json(&data)
        .send()
        .expect("Failed to send request");
    let mut buf = String::new();
    _res.read_to_string(&mut buf).expect("Failed to read response");
    buf
}
fn get_security_info(token:&str,code:&str,date:&str) -> String{
    //"method" => "get_security_info","token" => token,"code" => "502050.XSHG","date" =>"2019-01-15"
    let mut data = HashMap::new();
    data.insert("method","get_security_info");
    data.insert("token",token);
    data.insert("code",code);
    data.insert("date",date);
    let mut _res= reqwest::Client::new()
        .post("https://dataapi.joinquant.com/apis")
        .json(&data)
        .send()
        .expect("Failed to send request");
    let mut buf = String::new();
    _res.read_to_string(&mut buf).expect("Failed to read response");
    buf
}

fn get_bars(token:&str,code:&str,count:&str,unit_type:&str,end_date:&str,fq_ref_date:&str) -> String{
    //"method" => "get_security_info","token" => token,"code" => "502050.XSHG","date" =>"2019-01-15"
    let mut data = HashMap::new();
    data.insert("method","get_bars");
    data.insert("count",count);
    data.insert("unit",unit_type);
    data.insert("token",token);
    data.insert("code",code);
    data.insert("enddate",end_date);
    data.insert("fq_ref_date",fq_ref_date);
    let mut _res= reqwest::Client::new()
        .post("https://dataapi.joinquant.com/apis")
        .json(&data)
        .send()
        .expect("Failed to send request");
    let mut buf = String::new();
    _res.read_to_string(&mut buf).expect("Failed to read response");
    buf
}
//params=Dict("method" => "get_ticks","token" => token,"code"=>code,"count"=>count,"end_date"=>end_date);
fn get_ticks(token:&str,code:&str,count:&str,end_date:&str) -> String{
    let mut data = HashMap::new();
    data.insert("method","get_ticks");
    data.insert("count",count);
    data.insert("token",token);
    data.insert("code",code);
    data.insert("enddate",end_date);
    let mut _res= reqwest::Client::new()
        .post("https://dataapi.joinquant.com/apis")
        .json(&data)
        .send()
        .expect("Failed to send request");
    let mut buf = String::new();
    _res.read_to_string(&mut buf).expect("Failed to read response");
    buf
}
fn main() {
    let _token = get_token();
    println!("{:?}",_token);
    let code ="600000.XSHG";
    let date = "2019-01-15";
    let _data = get_bars(&_token,code,"10000","1m","2019-01-15","2019-02-28");
    println!("{}",_data);
    thread::sleep(Duration::from_millis(500000));
}
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