Go读取配置文件的方法总结

<?xml version="1.0" encoding="UTF-8"?>
<CATALOG>
    <CD>
        <TITLE>Empire Burlesque</TITLE>
        <ARTIST>Bob Dylan</ARTIST>
        <YEAR>1985</YEAR>
    </CD>
    <CD>
        <TITLE>Hide your heart</TITLE>
        <ARTIST>Bonnie Tyler</ARTIST>
        <YEAR>1988</YEAR>
    </CD>
    <CD>
        <TITLE>Greatest Hits</TITLE>
        <ARTIST>Dolly Parton</ARTIST>
        <YEAR>2000</YEAR>
    </CD>
</CATALOG>

package main

import (
    "encoding/xml"
    "os"
    "fmt"
    "log"
)

type CD struct {
    Title  string `xml:"TITLE"`
    Artist string `xml:"ARTIST"`
    Year   string `xml:"YEAR"`
}

type CDs struct {
    CD []CD `xml:"CD"`
}

func main() {
    file, err := os.Open("cd_catalog.xml") // Replace with your xml file
    if err != nil {
        log.Fatal(err)
    }

    decoder := xml.NewDecoder(file)

    var cds CDs
    err = decoder.Decode(&cds)
    if err != nil {
      log.Fatal(err)
    }

    for i := range cds.CD {
        fmt.Println(cds.CD[i].Title, cds.CD[i].Artist, cds.CD[i].Year)
    }
}

type Config struct {
    Server string `json:"server"`
    Port   int    `json:"port"`
}

func main() {
    file, err := os.Open("config.json")
    if err != nil {
        log.Fatalf("Failed to open file: %s", err)
    }

    config := Config{}
    decoder := json.NewDecoder(file)
    if err := decoder.Decode(&config); err != nil {
        log.Fatalf("Failed to decode JSON: %s", err)
    }

    // 使用配置信息
    log.Println(config.Server)
    log.Println(config.Port)
}

package main

import (
  "log"

  ini "github.com/go-ini/ini"
)

type Config struct {
  Server struct {
    Host string
    Port int
  } `ini:"server"`
}

func main() {
  cfg := new(Config)
  err := ini.MapTo(cfg, "path/to/config.ini")
  if err != nil {
    log.Fatalln(err)
  }

  log.Println("Server Host:", cfg.Server.Host)
  log.Println("Server Port:", cfg.Server.Port)
}

server: localhost
port: 8080

package main

import (
    "gopkg.in/yaml.v2"
    "io/ioutil"
    "log"
)

type Config struct {
    Server string `yaml:"server"`
    Port   int    `yaml:"port"`
}

func main() {
    data, err := ioutil.ReadFile("/path/to/your/yaml/file.yaml")
    if err != nil {
        log.Fatalf("error: %v", err)
    }

    config := Config{}
    err = yaml.Unmarshal(data, &config)
    if err != nil {
        log.Fatalf("error: %v", err)
    }

    // 使用配置信息
    log.Println(config.Server)
    log.Println(config.Port)
}