如何在可执行 bash 脚本中从 curl 获得正确的响应

Question

我有一个超级简单的bash脚本...

#!/bin/bash
result=$(curl -i -H "Accept: application/json" -H "Content-Type: application/json" https://jsonplaceholder.typicode.com/posts/1)

我正在尝试调用 REST API 并解析响应。

当我执行此脚本时，我得到此响应，这不是我想要的...

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
146   292  146   292    0     0   1106      0 --:--:-- --:--:-- --:--:--  6790

当我直接在我的终端中运行 curl 命令时，我得到这个响应，这就是我想要的......

HTTP/1.1 200 OK
Date: Fri, 20 Oct 2017 16:07:06 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 292
Connection: keep-alive
Set-Cookie: __cfduid=da76c27cec17567gFH34bd0e2a0ae0ff1508515626; expires=Sat, 20-Oct-18 16:07:06 GMT; path=/; domain=.typicode.com; HttpOnly
X-Powered-By: Express
Vary: Origin, Accept-Encoding
Access-Control-Allow-Credentials: true
Cache-Control: public, max-age=14400
Pragma: no-cache
Expires: Fri, 20 Oct 2017 20:07:06 GMT
X-Content-Type-Options: nosniff
Etag: W/"124-yiKdLzqO5gBghyTrcdJ8Yq0LGnU"
Via: 1.1 vegur
CF-Cache-Status: HIT
Server: cloudflare-nginx
CF-RAY: 3b0d3a6bda04138f-LHR
{
  "userId": 1,
  "id": 1,
  "title": "sunt aut facere repellat provident occaecati excepturi optio reprehenderit",
  "body": "quia et suscipitnsuscipit recusandae consequuntur expedita et cumnreprehenderit molestiae ut ut quas totamnnostrum rerum est autem sunt rem eveniet architecto"
}

有人可以指出我错过了什么吗:)

Answer 1

当您想将结果保存到变量时，您需要将结果括起来：

#!/bin/bash
result="$(curl -i -H "Accept: application/json" -H "Content-Type: application/json" https://jsonplaceholder.typicode.com/posts/1)"
echo the result is: "${result}"

如果要保留多行，双引号很重要。

Answer 2

要获取 curl 的实际输出，您可以直接在脚本中使用该命令。 或者，您可以在变量中设置端点...

#!/bin/bash
result=https://jsonplaceholder.typicode.com/posts/1
curl  -i -H "Accept: application/json" -H "Content-Type: application/json" $result

这可以显示您想要的内容。