Analysis of Golang Basic Learning-yaml file

1. What is YAML?

Official website explanation

%YAML 1.2---YAML: YAML Ain't Markup LanguageWhat It Is: YAML is a human friendly data serialization  standard for all programming languages.

2.yaml syntax

Yaml syntax, please refer to this man's, written in very detailed.

3. Golang parsing Yaml files

system Environment: MacOS, VIM 8.0, golang:go version go1.8 darwin/amd64

3.1 Creating a Yaml file

Vim First.yaml

The contents are as follows:

SiteName: seetaSiteAddr: BeiJingHttps: trueNginx:    Port: 443    LogPath:  "/var/log//nginx/nginx.log"    Path: "/opt/nginx/"

3.2 Go parsing Yaml's package

3.2.1 Yaml.v2

This article uses: Gopkg.in/yaml.v2

import "Gopkg.in/yaml.v2"

3.2 Parsing yaml file code

package mainimport (    "fmt"    "io/ioutil"    "gopkg.in/yaml.v2")//Nginx nginx  配置type Nginx struct {    Port int `yaml:"Port"`    LogPath string `yaml:"LogPath"`    Path string `yaml:"Path"`}//Config   系统配置配置type Config struct{    Name string `yaml:"SiteName"`    Addr string `yaml:"SiteAddr"`    HTTPS bool `yaml:"Https"`    SiteNginx  Nginx `yaml:"Nginx"`}func main() {    var setting Config    config, err := ioutil.ReadFile("./first.yaml")    if err != nil {        fmt.Print(err)    }    yaml.Unmarshal(config,&setting)    fmt.Println(setting.Name)    fmt.Println(setting.Addr)    fmt.Println(setting.HTTPS)    fmt.Println(setting.SiteNginx.Port)    fmt.Println(setting.SiteNginx.LogPath)    fmt.Println(setting.SiteNginx.Path)}

Introduction to Functions:

1. Ioutil. ReadFile ("./first.yaml"): Read Yaml file information
2. Yaml. Unmarshal ()

First input parameter: Gets ioutil. The value of ReadFile, for the []byte type
The second parameter outputs a parameter, which can be any type.

Reference:
The Yaml.v2 in Godoc
Yaml Source in GitHub