8、go第三方json解析器

go原生的json解析器：encoding/json 和第三方的json解析器在 Marshal 上基本没有差别，但是在Unmarshal上差别还是很大的，听说go 1.10版本原生 json 和 第三方json解析器：github.com/json-iterator/go 性能持平，已经用不到第三方 json 解析器了。
注：test.json 文件下载（1569308行），（下载之后放在和 main.go 同一个文件夹下）
https://pan.baidu.com/s/1lZ9KN2H6lILiEymaW321sw

测试结果：

Golang的原生json解析器：encoding/json
第三方json解析器：github.com/json-iterator/go

Unmarshal：
解析文件：test.json(1569308行)
原生： 677.887527（671.383077ms 684.148791ms 678.130712ms平均值）
Json_Iterator： 448.29660（469.585036ms 433.741485ms 441.563305ms平均值）
性能提升：51.21%

Marshal：
原生： 65.6363（70.146µs 64.2µs 62.563µs平均值）
Json_Iterator： 62.38（62.03µs 64.223µs 60.888µs平均值）
性能提升：5.22%

1、原生：

package common

import (
    "encoding/json"
    "io/ioutil"
)

func HandleJsonWithDefault(flieName string) {
    byteValue, err := ioutil.ReadFile(flieName)
    if err != nil{
        panic(err)
    }
    var s interface{}
    err = json.Unmarshal([]byte(byteValue),&s)
    if err != nil{
        panic(err)
    }
}

func MarshalWithDefault(){

    const jsonStream = ` 
        { "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" }
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
    `
    type Message struct {
        Name , Text string
    }

    _,err := json. Marshal (jsonStream)
    if err != nil{
        panic(err)
    }
}

2、第三方：

package common

import (
    jsoniter "github.com/json-iterator/go"
    "io/ioutil"
)

func HandleJsonWithJsoniter(jsonFile string) {
    byteValue, err := ioutil.ReadFile(jsonFile)
    if err != nil{
        panic(err)
    }
    var s interface{}
    var json = jsoniter.ConfigCompatibleWithStandardLibrary
    err = json.Unmarshal([]byte(byteValue),&s)
    if err != nil{
        panic(err)
    }
    //fmt.Println(s)

}

func MarshalWithJsoniter(){
    const jsonStream = ` 
        { "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" }
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
{ "Name" : "Ed" , "Text" : "Knock knock." } 
        { "Name" : "Sam" , "Text" : "Who's there?" } 
        { "Name" : "Ed" , "Text" : "Go fmt." } 
        { "Name" : "Sam" , "Text" : "Go fmt who?" } 
        { "Name" : "Ed" , "Text" : "Go fmt yourself!" } 
    `
    type Message struct {
        Name , Text string
    }

    _,err := jsoniter.Marshal (jsonStream)
    if err != nil{
        panic(err)
    }
}

3、main函数：

package main

import (
    common "JsonAnalyse/jsonDemo/Common"
    "fmt"
    "time"

)

func main() {
    //1.golang的原生json解析器：encoding/json：
    //t1 := time.Now()
    //common.MarshalWithDefault()
    //common.HandleJsonWithDefault("test.json")
    //elapsed := time.Since(t1)
    //fmt.Printf("执行消耗的时间为:%v", elapsed)

    //2.第三方json解析器：github.com/json-iterator/go：
    t1 := time.Now()
    common.HandleJsonWithJsoniter("test.json")
    //common.MarshalWithDefault()
    elapsed := time.Since(t1)
    fmt.Printf("执行消耗的时间为:%v", elapsed)

}