如何使用jq从JSON获取键名

  • Z时代
  • 2024-01-10
  • 分类：问答

curl http://testhost.test.com:8080/application/app/version | jq '.version' |

jq '.[]'

上面的命令仅输出以下值：

"madireddy@test.com"
"2323"
"test"
"02-03-2014-13:41"
"application"

我如何像下面这样获取键名：

email
versionID
context
date
versionName

回答：

您可以使用：

$ jq 'keys' file.json
$ cat file.json:
{ "Archiver-Version" : "Plexus Archiver", "Build-Id" : "", "Build-Jdk" : "1.7.0_07", "Build-Number" : "", "Build-Tag" : "", "Built-By" : "cporter", "Created-By" : "Apache Maven", "Implementation-Title" : "northstar", "Implementation-Vendor-Id" : "com.test.testPack", "Implementation-Version" : "testBox", "Manifest-Version" : "1.0", "appname" : "testApp", "build-date" : "02-03-2014-13:41", "version" : "testBox" }
$ jq 'keys' file.json
[
  "Archiver-Version",
  "Build-Id",
  "Build-Jdk",
  "Build-Number",
  "Build-Tag",
  "Built-By",
  "Created-By",
  "Implementation-Title",
  "Implementation-Vendor-Id",
  "Implementation-Version",
  "Manifest-Version",
  "appname",
  "build-date",
  "version"
]

要使用这些键创建一个BASH数组：

使用BASH 4+：

mapfile -t arr < <(jq -r 'keys[]' ms.json)

在较旧的BASH上，您可以执行以下操作：

arr=()
while IFS='' read -r line; do
   arr+=("$line")
done < <(jq 'keys[]' ms.json)

然后打印：

printf "%s\n" ${arr[@]}
"Archiver-Version"
"Build-Id"
"Build-Jdk"
"Build-Number"
"Build-Tag"
"Built-By"
"Created-By"
"Implementation-Title"
"Implementation-Vendor-Id"
"Implementation-Version"
"Manifest-Version"
"appname"
"build-date"
"version"

以上是 如何使用jq从JSON获取键名 的全部内容， 来源链接： utcz.com/qa/413080.html

回到顶部