推荐一个Json解析库

hearfish · 2019-02-18 16:21:33 · 2823 次点击 · 预计阅读时间 6 分钟 · 大约8小时之前开始浏览

这是一个创建于 2019-02-18 16:21:33 的文章，其中的信息可能已经有所发展或是发生改变。

推荐一个json库 gojson，可以通过命令行工具根据输入的Struct动态生成MarshalJSON/UnmarshalJSON方法，性能与EasyJSON、Jsonparser、Jsoniter相比要好很多

GoJSON

GoJSON is a fast and easy package to marshal/unmarshal struct to/from json. You can use GoJSON tool to generate marshal/unmarshal code, in benchmark tests, GoJSON's generate code is almost 6~7 times faster than encoding/json.

Example

# install
  go get -u -v github.com/go-fish/gojson
  cd ${GOPATH}/src/github.com/go-fish/gojson/cmd
  go build -o gojson main.go


# usage
  gojson [options] <input dir|file>

  -inline
        Use inline function in generate code (default true)
  -m string
        Mode of generate, eg: encode, decode, all (default "all")
  -o string
        Optional name of the output file to be generated. (default "gojson.generate.go")
  -unsafe
        Use decoder without copy data
  -version
        Show version information.

with -inline && -unsafe, you can get most performance generate code with -m, gojson will generate marshal/unmarshal/both for all expose structs in input dir/file.

For expose structs, gojson generate MarshalJSON/UnmarshalJSON methods for marshal/unmarshal json. You also can use gojson.Marshal/gojson.Unmarshal functions to marshal/unmarshal json.

Benchmark

Large Payload

Unmarshal

gojson	114658 ns/op	457.72 MB/s	5873 B/op	253 allocs/op
jsonparser	116647 ns/op	449.92 MB/s	0 B/op	0 allocs/op
easyjson	219673 ns/op	238.91 MB/s	9264 B/op	349 allocs/op
gojay	92398 ns/op	567.99 MB/s	5985 B/op	259 allocs/op
jsoniter	159877 ns/op	328.26 MB/s	800 B/op	29 allocs/op
encoding/json	680867 ns/op	377.08 MB/s	6154 B/op	258 allocs/op

Marshal

gojson	131 ns/op	400511.56 MB/s	32 B/op	1 allocs/op
easyjson	235 ns/op	223039.53 MB/s	272 B/op	3 allocs/op
encoding/json	597 ns/op	87819.16 MB/s	120 B/op	4 allocs/op

Medium Payload

Unmarshal

gojson	4056 ns/op	510.51 MB/s	240 B/op	10 allocs/op
jsonparser	9379 ns/op	220.81 MB/s	0 B/op	0 allocs/op
easyjson	8107 ns/op	255.43 MB/s	288 B/op	11 allocs/op
gojay	5004 ns/op	413.84 MB/s	2472 B/op	10 allocs/op
jsoniter	10579 ns/op	195.75 MB/s	2576 B/op	12 allocs/op
encoding/json	28030 ns/op	73.88 MB/s	520 B/op	15 allocs/op

Marshal

gojson	105 ns/op	19551.00 MB/s	32 B/op	1 allocs/op
easyjson	193 ns/op	10700.99 MB/s	272 B/op	3 allocs/op
encoding/json	443 ns/op	4667.11 MB/s	120 B/op	4 allocs/op

Small Payload

Unmarshal

gojson	812 ns/op	176.00 MB/s	160 B/op	5 allocs/op
jsonparser	925 ns/op	154.47 MB/s	0 B/op	0 allocs/op
easyjson	1209 ns/op	118.26 MB/s	128 B/op	8 allocs/op
gojay	977 ns/op	146.30 MB/s	304 B/op	6 allocs/op
jsoniter	1847 ns/op	77.42 MB/s	336 B/op	7 allocs/op
encoding/json	2576 ns/op	55.49 MB/s	328 B/op	7 allocs/op

Marshal

gojson	331 ns/op	431.90 MB/s	32 B/op	1 allocs/op
easyjson	439 ns/op	325.35 MB/s	272 B/op	3 allocs/op
encoding/json	1398 ns/op	102.22 MB/s	120 B/op	4 allocs/op

Questions

Any questions or bugs can go though github issues.

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推荐一个Json解析库

GoJSON

Example