问题

我试图用Rust编写一个程序，使用reqwest在文件的每一行中发送一个HTTP请求，并将该行作为GET请求的一部分。

```rust
use std::fs::File;
use std::io::{self, prelude::*, BufReader};
use reqwest;

fn main() -> io::Result<()> {
    let file = File::open("foo.txt")?;
    let reader = BufReader::new(file);

    for line in reader.lines() {
        let url = format!("https://www.example.com/{}", line?);
        let _response = reqwest::get(&url)?;
    }

    Ok(())
}

当我尝试这样做及其变体时，它说reqwest::get只接受一个参数，而我给了两个。

<details>
<summary>英文:</summary>

Im trying to make a program in rust that will send a http req with reqwest for every line in a file, and have that line be apart of the get request.

```use std::fs::File;
use std::io::{self, prelude::*, BufReader};

fn main() -&gt; io::Result&lt;()&gt; {
    let file = File::open(&quot;foo.txt&quot;)?;
    let reader = BufReader::new(file);

    for line in reader.lines() {
        request::get(&quot;https://www.example.com/@{}&quot;, line)
    }

    Ok(())
}

when I try this and variations of it, it says that reqwest::get only takes one parameter and I've given two.

答案1

得分: 1

我相信您想要格式化 URL 请求。例如：

request::get(format!("https://www.example.com/@{}", line))

request::get(format!("https://www.example.com/@{}", line))

答案2

得分: 0

您可以使用 [`?` 运算符](https://doc.rust-lang.org/reference/expressions/operator-expr.html#the-question-mark-operator) 来解包该行（它是一个 `Result`），然后使用 [`format!`](https://doc.rust-lang.org/std/macro.format.html) 来连接这些字符串。

```rust
request::get(format!("https://www.example.com/@{}", line?))

request::get(format!("https://www.example.com/@{}", line?))