golang怎么通过viper读取config.yaml文件

这篇文章主要讲解了"golang怎么通过viper读取config.yaml文件"，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习"golang怎么通过viper读取config.yaml文件"吧！

1.导入依赖包

import (    "github.com/spf13/viper")

2.编写yaml文件

放在conf目录下，文件名叫config.yaml

# TODO  本地调试时放开KubeSphere_URL: http://192.168.103.48:3188# TODO 部署到环境时放开#KubeSphere_URL: http://ks-apiserver.kubesphere-system.svc:80KubesphereAdminUser: adminKubespherePassword: Admin123#TODO 调用梅姐服务的ip，暂用当前，后续需要修改Other_service_IP: http://192.168.103.48:30412#Other_service_IP: http://container-cloud-system-controller-manager-metrics-service.container-cloud-system-system.svc:8093Other_service_URL: /capis/quota.ictnj.io/v1alpha1/namespaces/#TODO harbor镜像仓库地址HARBOR_URL: https://192.168.66.4:443HARBOR_ADMIN_USERNAME: adminHARBOR_ADMIN_PASSWD: Harbor12345HARBOR_IP_HTTPS: 192.168.66.4:443HARBOR_SSH_ADDRESS: 192.168.103.48:53304HARBOR_SSH_USERNAME: rootHARBOR_SSH_PASSWD: peng123.

3.编写读取yaml文件的go文件

放在config目录下，文件名叫config.go

需要注意的是目录的问题，如果放在同目录，直接用configurationPath，不同的编辑器，

vscode跟golang对相对路径处理不同

package configimport (    "github.com/spf13/viper")const (    configurationName = "config"    configurationPath = "./conf"    // vscode特殊读取路径  //  configurationPath_vscode = "../conf" )var Config *viper.Viperfunc init() {    Config = viper.New()    Config.SetConfigName(configurationName)    Config.AddConfigPath(configurationPath)    Config.SetConfigType("yaml")    Config.AddConfigPath(configurationPath)    if err := config.ReadInConfig(); err != nil {     panic(err)   } }

如果config.yaml跟config.go放在同目录简单的路径用上面这个，如果路径不同，且不同的同事用不同的编译软件，可以尝试下面的路径兼容

package configimport (    "github.com/spf13/viper")const (    configurationName = "config"    configurationPath = "./conf"    // vscode特殊读取路径    configurationPath_vscode = "../conf" )var Config *viper.Viperfunc init() {    Config = viper.New()    Config.SetConfigName(configurationName)    Config.AddConfigPath(configurationPath)    Config.SetConfigType("yaml")    if err := Config.ReadInConfig(); err != nil {        Config.AddConfigPath(configurationPath_vscode)        if err := Config.ReadInConfig(); err != nil {            Config.AddConfigPath(configurationPath)            panic(err)        }    }}

4.使用config对象

Config.GetString("KubeSphere_URL")

5.viper源码分析

type Viper struct {    // Delimiter that separates a list of keys    // used to access a nested value in one go    keyDelim string    // A set of paths to look for the config file in    configPaths []string    // The filesystem to read config from.    fs afero.Fs    // A set of remote providers to search for the configuration    remoteProviders []*defaultRemoteProvider    // Name of file to look for inside the path    configName        string    configFile        string    configType        string    configPermissions os.FileMode    envPrefix         string    automaticEnvApplied bool    envKeyReplacer      StringReplacer    allowEmptyEnv       bool    config         map[string]interface{}    override       map[string]interface{}    defaults       map[string]interface{}    kvstore        map[string]interface{}    pflags         map[string]FlagValue    env            map[string]string    aliases        map[string]string    typeByDefValue bool    // Store read properties on the object so that we can write back in order with comments.    // This will only be used if the configuration read is a properties file.    properties *properties.Properties    onConfigChange func(fsnotify.Event)}

func (v *Viper) ReadInConfig() error {    jww.INFO.Println("Attempting to read in config file")    filename, err := v.getConfigFile()    if err != nil {        return err    }    if !stringInSlice(v.getConfigType(), SupportedExts) {        return UnsupportedConfigError(v.getConfigType())    }    jww.DEBUG.Println("Reading file: ", filename)    file, err := afero.ReadFile(v.fs, filename)    if err != nil {        return err    }    config := make(map[string]interface{})    err = v.unmarshalReader(bytes.NewReader(file), config)    if err != nil {        return err    }    v.config = config    return nil}

把yaml文件的键值读取到viper对象的config当中

感谢各位的阅读，以上就是"golang怎么通过viper读取config.yaml文件"的内容了，经过本文的学习后，相信大家对golang怎么通过viper读取config.yaml文件这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是，小编将为大家推送更多相关知识点的文章，欢迎关注！