Failed to deserialize the specific yaml file

[richelieu-yang]

Preflight Checklist

• [X] I have searched the issue tracker for an issue that matches the one I want to file, without success.
• [X] I am not looking for support or already pursued the available support channels without success.
• [X] I have checked the troubleshooting guide for my problem, without success.

Viper Version

1.18.2

Go Version

1.19.13

Config Source

Defaults

Format

No response

Repl.it link

No response

Code reproducing the issue

package main

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

func main() {
    type bean struct {
        ResponseHeadersConfig map[string]string `json:"responseHeaders" yaml:"responseHeaders"`
    }

    b := &bean{}

    v := viper.New()
    v.SetConfigFile("_test.yaml")
    if err := v.ReadInConfig(); err != nil {
        panic(err)
    }
    err := v.Unmarshal(b)
    if err != nil {
        panic(err)
    }

    fmt.Println(b.ResponseHeadersConfig) // 
}

Expected Behavior

output

map[strict-transport-security:max-age=604800; includeSubDomains x-xss-protection:1;mode=block]

Actual Behavior

output

map[]

Steps To Reproduce

No response

Additional Information

_test.yaml

responseHeaders: X-XSS-Protection: 1;mode=block Strict-Transport-Security: max-age=604800; includeSubDomains

[github-actions[bot]]

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[mazenharake]

Have you tried indentation in your _test.yaml file?

responseHeaders:
    X-XSS-Protection: 1;mode=block
    Strict-Transport-Security: max-age=604800; includeSubDomains

you should probably also use mapstructure:"responseHeaders" unless you changes the mapstructure package to use a different tag.

[sagikazarmark]

I think @mazenharake is correct: you need to use mapstructure struct tags.