How to escape a JSON variable posted with curl in bash script?
我将通过其API在bash脚本中向mandrill提交一条消息，"message"变量的内容导致API调用返回并返回一个错误：
1 | An error occured: {"status":"error","code":-1,"name":"ValidationError","message":"You must specify a key value"} |
$message_body变量的内容是：
1 2 3 4 5 6 7 8 9 10 11 12 | Trigger: Network traffic high on 'server' Trigger status: PROBLEM Trigger severity: Average Trigger URL: Item values: 1. Network traffic inbound (server:net.if.in[eth0,bytes]): 3.54 MBytes 2. Network traffic outbound (server:net.if.out[eth0,bytes]): 77.26 KBytes 3. *UNKNOWN* (*UNKNOWN*:*UNKNOWN*): *UNKNOWN* Original event ID: 84 |
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我不确定字符串的哪一部分正在丢弃它，但似乎是某些原因导致了JSON在提交到mandrill的API时无效。
如果我将上述消息更改为"testing 123"之类的简单消息，则消息将成功提交。
发布的代码如下：
1 2 3 4 5 6 | #!/bin/bash ... message_body = `cat message.txt` msg='{"async": false,"key":"'$key'","message": {"from_email":"'$from_email'","from_name":"'$from_name'","headers": {"Reply-To":"'$reply_to'" },"auto_html": false,"return_path_domain": null,"subject":"'$2'","text":"'$message_body'","to": [ {"email":"'$1'","type":"to" } ] } }' results=$(curl -A 'Mandrill-Curl/1.0' -d"$msg" 'https://mandrillapp.com/api/1.0/messages/send.json' -s 2>&1); echo"$results" |
我该怎么做才能确保
我怀疑问题在于缺乏对变量的引用
1 2 | msg='{"async": false,"key":"'$key'","message": {"from_email":"'$from_email'","from_name":"'$from_name'","headers": {"Reply-To":"'$reply_to'" },"auto_html": false,"return_path_domain": null,"subject":"'$2'","text":"'$message_body'","to": [ {"email":"'$1'","type":"to" } ] } }' # ..............................^^^^ no quotes around var ...........^^^^^^^^^^^...................^^^^^^^^^^...............................^^^^^^^^^...................................................................^^..............^^^^^^^^^^^^^.........................^^ |
尝试这样做：对每个变量中的任何双引号进行转义。
1 2 3 4 5 6 7 8 9 10 11 | escape_quotes() { echo"${1//"/\\"}"; } msg=$( printf '{"async": false,"key":"%s","message": {"from_email":"%s","from_name":"%s","headers": {"Reply-To":"%s" },"auto_html": false,"return_path_domain": null,"subject":"%s","text":"%s","to": [ {"email":"%s","type":"to" } ] } }' \ "$(escape_quotes"$key")" \ "$(escape_quotes"$from_email")" \ "$(escape_quotes"$from_name")" \ "$(escape_quotes"$reply_to")" \ "$(escape_quotes"$2")" \ "$(escape_quotes"$message_body")" \ "$(escape_quotes"$1")" ) |
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