Return signed OSS URLs for site images

config/config.go

@@ -54,6 +54,7 @@ type OSSConfig struct {
 	PublicBaseURL   string `mapstructure:"public_base_url"`
 	MaxFileSizeMB   int    `mapstructure:"max_file_size_mb"`
 	MaxFiles        int    `mapstructure:"max_files"`
+	SignedURLExpire int    `mapstructure:"signed_url_expire"`
 }
 
 // AppConfig 应用程序配置
@@ -153,6 +154,7 @@ func setDefaults() {
 	viper.SetDefault("oss.public_base_url", "")
 	viper.SetDefault("oss.max_file_size_mb", 5)
 	viper.SetDefault("oss.max_files", 6)
+	viper.SetDefault("oss.signed_url_expire", 3600)
 }
 
 // bindEnvVariables 绑定环境变量
@@ -189,6 +191,7 @@ func bindEnvVariables() {
 	viper.BindEnv("oss.public_base_url")
 	viper.BindEnv("oss.max_file_size_mb")
 	viper.BindEnv("oss.max_files")
+	viper.BindEnv("oss.signed_url_expire")
 }
 
 // validateConfig 验证配置