gjson
GJSONIt's oneGopackage, it provides ajsonA quick and easy way to get values in a document. It has functions such as single-line retrieval, point symbol path, iteration and parsing json lines.
You can also viewSJSONTo modify json,as well asJJCommand line tool.
How to use this readme fileGJSONA quick overview, for more information, please check outGJSONgrammar.
The address of github ishere。
Install
Installgjson, usinggoTraditional installation method:
go install /tidwall/gjson@latest
Execute in the file directory:
$ go get -u /tidwall/gjson
This is in the directory,gjsonNow.
use
Get the corresponding value.
Get the search for the specified pathjson. The path adopts point syntax, such as "" or "age". When the value is found, it returns immediately.
package main
import "/tidwall/gjson"
const json = `{"name":{"first":"Janet","last":"Prichard"},"age":47}`
func main() {
value := (json, "")
println(())
}This will print:
Prichard
This is the traditional one we usejsonThere is a little difference in analysis,gjsonNot only did we analyze itjsonThe data also helps us establish a channel for quick search.
Path syntax
A path is a series of keys separated by points. The key may contain special wildcards "*" and "?". To access array values, use the index as the key. To get the number of elements in an array or access subpaths, use the "#" character. Dots and wildcards can be escaped with "\".
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"": "Deer Hunter",
"friends": [
{"first": "Dale", "last": "Murphy", "age": 44, "nets": ["ig", "fb", "tw"]},
{"first": "Roger", "last": "Craig", "age": 68, "nets": ["fb", "tw"]},
{"first": "Jane", "last": "Murphy", "age": 47, "nets": ["ig", "tw"]}
]
}
"" >> "Anderson"
"age" >> 37
"children" >> ["Sara","Alex","Jack"]
"children.#" >> 3
"children.1" >> "Alex"
"child*.2" >> "Jack"
"c?ildren.0" >> "Sara"
"fav\.movie" >> "Deer Hunter"
"friends.#.first" >> ["Dale","Roger","Jane"]
"friends." >> "Craig"
You can also use queries the first match in the array#(…) or find all matches#(…)#. Query supports the ==, !=, <, <=, >,>= comparison operators with simple pattern matching %(like) and !% (not like) operators.
friends.#(last=="Murphy").first >> "Dale"
friends.#(last=="Murphy")#.first >> ["Dale","Jane"]
friends.#(age>45)#.last >> ["Craig","Murphy"]
friends.#(first%"D*").last >> "Murphy"
friends.#(first!%"D*").last >> "Craig"
friends.#(nets.#(=="fb"))#.first >> ["Dale","Roger"]
This makes it very convenient for us to search.
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