这是理解和编写 YAML 格式配置文件的快速参考备忘单。
YAML 是一种数据序列化语言,旨在供人类直接读写
.yaml
或 .yml
扩展名结束您的 YAML 文件n1: 1 # 整数
n2: 1.234 # 浮点
s1: 'abc' # 字符串
s2: "abc" # 字符串
s3: abc # 字符串
b: false # 布尔类型
d: 2015-04-05 # 日期类型
{
"n1": 1,
"n2": 1.234,
"s1": "abc",
"s2": "abc",
"s3": "abc",
"b": false,
"d": "2015-04-05"
}
使用空格缩进。 元素部分之间必须有空间。
some_thing: &VAR_NAME foobar
other_thing: *VAR_NAME
{
"some_thing": "foobar",
"other_thing": "foobar"
}
# A single line comment example
# block level comment example
# comment line 1
# comment line 2
# comment line 3
description: |
hello
world
{"description": "hello\nworld\n"}
parent: &defaults
a: 2
b: 3
child:
<<: *defaults
b: 4
{
"parent": {
"a": 2,
"b": 3
},
"child": {
"a": 2,
"b": 4
}
}
values: &ref
- Will be
- reused below
other_values:
i_am_ref: *ref
{
"values": [
"Will be",
"reused below"
],
"other_values": {
"i_am_ref": [
"Will be",
"reused below"
]
}
}
description: >
hello
world
{"description": "hello world\n"}
---
document: this is doc 1
---
document: this is doc 2
YAML使用---
将指令与文档内容分开。
- Mark McGwire
- Sammy Sosa
- Ken Griffey
[
"Mark McGwire",
"Sammy Sosa",
"Ken Griffey"
]
hr: 65 # Home runs
avg: 0.278 # Batting average
rbi: 147 # Runs Batted In
{
"hr": 65,
"avg": 0.278,
"rbi": 147
}
attributes:
- a1
- a2
methods: [getter, setter]
{
"attributes": ["a1", "a2"],
"methods": ["getter", "setter"]
}
children:
- name: Jimmy Smith
age: 15
- name: Jimmy Smith
age: 15
-
name: Sammy Sosa
age: 12
{
"children": [
{"name": "Jimmy Smith", "age": 15},
{"name": "Jimmy Smith", "age": 15},
{"name": "Sammy Sosa", "age": 12}
]
}
my_sequences:
- [1, 2, 3]
- [4, 5, 6]
-
- 7
- 8
- 9
- 0
{
"my_sequences": [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9, 0]
]
}
Mark McGwire: {hr: 65, avg: 0.278}
Sammy Sosa: {
hr: 63,
avg: 0.288
}
{
"Mark McGwire": {
"hr": 65,
"avg": 0.278
},
"Sammy Sosa": {
"hr": 63,
"avg": 0.288
}
}
Jack:
id: 1
name: Franc
salary: 25000
hobby:
- a
- b
location: {country: "A", city: "A-A"}
{
"Jack": {
"id": 1,
"name": "Franc",
"salary": 25000,
"hobby": ["a", "b"],
"location": {
"country": "A", "city": "A-A"
}
}
}
set1: !!set
? one
? two
set2: !!set {'one', "two"}
{
"set1": {"one": null, "two": null},
"set2": {"one": null, "two": null}
}
集合表示为一个映射,其中每个键都与一个空值相关联
ordered: !!omap
- Mark McGwire: 65
- Sammy Sosa: 63
- Ken Griffy: 58
{
"ordered": [
{"Mark McGwire": 65},
{"Sammy Sosa": 63},
{"Ken Griffy": 58}
]
}
基于 YAML.org refcard。
:- | :- |
---|---|
% | 指令指标 |
--- | 文档标题 |
... | 文档终结者 |
:- | :- |
---|---|
? | 关键指标 |
: | 价值指标 |
- | 嵌套系列条目指示器 |
, | 单独的内联分支条目 |
[] | 环绕串联系列分支 |
{} | 环绕在线键控分支 |
:- | :- |
---|---|
& | 锚属性 |
* | 别名指示符 |
:- | :- |
---|---|
= | 默认“值”映射键 |
<< | 合并来自另一个映射的键 |
:- | :- |
---|---|
'' | 环绕内联未转义标量 |
" | 环绕内嵌转义标量 |
` | ` |
> | 折叠标量指示器 |
- | 剥离 chomp 修饰符(|- 或 >- ) |
+ | 保留 chomp 修饰符(|+ 或 >+ ) |
1-9 | 显式缩进修饰符(|1 或 >2 )。 修饰符可以组合( |2- , >+1 ) |
:- | :- |
---|---|
none | 未指定的标签(由应用程序自动解析) |
! | 非特定标签(默认情况下,!!map /!!seq /!!str ) |
!foo | 主要(按照惯例,表示本地 !foo 标记) |
!!foo | 次要的(按照惯例,表示 tag:yaml.org,2002:foo ) |
!h!foo | 需要 %TAG !h! <prefix> (然后表示 <prefix>foo ) |
!<foo> | 逐字标记(始终表示“foo”) |
# | 一次性评论指示器 |
`@ | 两者都保留供将来使用 |
!!map | {Hash table, dictionary, mapping} |
!!seq | {List, array, tuple, vector, sequence} |
!!str | Unicode 字符串 |
\x12
(8-bit)\u1234
(16-bit)\U00102030
(32-bit)\\
(\)\"
(")\
( )\<TAB>
(TAB)\0
(NUL)\a
(BEL)\b
(BS)\f
(FF)\n
(LF)\r
(CR)\t
(TAB)\v
(VTAB)\e
(ESC)\_
(NBSP)\N
(NEL)\L
(LS)\P
(PS)!!set | {cherries, plums, apples} |
!!omap | [one: 1, two: 2] |
{~, null} | 空(无值)。 |
[1234, 0x4D2, 02333] | [十进制整数、十六进制整数、八进制整数] |
[1_230.15, 12.3015e+02] | [固定浮点数,指数浮点数] |
[.inf, -.Inf, .NAN] | [无穷大(浮点数),负数,不是数字] |
{Y, true, Yes, ON} | 布尔真 |
{n, FALSE, No, off} | 布尔假 |