[英]Obtain Status Code and Response Body from Curl Request
I want to check http repsonse codes from curl
yet still be able to retrieve the returned data and store it in a variable.我想从
curl
检查 http 响应代码,但仍然能够检索返回的数据并将其存储在变量中。
I found this answer very helpful: https://superuser.com/a/862395/148175 The user describes how he created a new filedescriptor 3
that redirects to STDOUT
.我发现这个答案非常有帮助: https ://superuser.com/a/862395/148175 用户描述了他如何创建一个重定向到
STDOUT
的新文件描述符3
。
Then he ran curl
in a subshell where he captured the output of -w "%{http_code}"
into a variable HTTP_STATUS
and the output to the STDOUT with -o >(cat >&3)
.然后他在子 shell 中运行
curl
在那里他将-w "%{http_code}"
HTTP_STATUS
-w "%{http_code}"
的输出捕获到变量HTTP_STATUS
并使用-o >(cat >&3)
输出到 STDOUT。
My problem is that I want to capture the output of the STDOUT into a variable after I run curl within a function.我的问题是我想在函数中运行 curl 后将 STDOUT 的输出捕获到一个变量中。
This is my script:这是我的脚本:
#!/bin/bash
exec 3>&1
function curlBinData {
HTTP_STATUS=$(curl -s -w "%{http_code}" -o >(cat >&3) https://www.google.com --data-binary $1)
if [ $HTTP_STATUS -ne 200 ]; then
echo Error: HTTP repsonse is $HTTP_STATUS
exit
fi
}
responsedata=$(curlBinData '{"head":5}')
echo $responsedata
What it does:它能做什么:
The output of curl is directed to STDOUT
and printed in the console window. curl 的输出被定向到
STDOUT
并打印在控制台窗口中。
What's desired想要什么
Since the function calling curl
is run in a subshell, it should direct the output to the variable responsedata
.由于调用
curl
的函数在子 shell 中运行,因此它应该将输出定向到变量responsedata
。
From what I understand, you want this function to output Error: HTTP repsonse is $status
if $status
is not equal to 200
and otherwise output the response body, so here is the code for that.据我了解,您希望此函数输出
Error: HTTP repsonse is $status
如果$status
不等于200
,否则输出响应正文,所以这里是代码。 I did not see a need for an additional file descriptor, so I removed it.我认为不需要额外的文件描述符,所以我删除了它。
#!/bin/bash
function curlBinData {
local res=$(curl -s -w "%{http_code}" https://www.google.com --data-binary $1)
local body=${res::-3}
local status=$(printf "%s" "$res" | tail -c 3)
if [ "$status" -ne "200" ]; then
echo "Error: HTTP repsonse is $status"
exit
fi
echo $body
}
responsedata=$(curlBinData '{"head":5}')
echo $responsedata
Edit: Simplified the evaluation of the status code from the curl response to just get the last three characters aka the status code.编辑:简化了 curl 响应中状态代码的评估,只需获取最后三个字符,即状态代码。
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