如果您仔细查看可用的不同方法,Get
您会发现返回类型是string
、[]string
、map[string]interface{}
和。map[string]string
map[string][]string
但是,与“问题类型”关联的值的类型是[]map[string]string
. 因此,获取此数据的唯一方法是通过Get
方法并使用类型断言。
现在,以下代码生成适当类型的issue_types
,即[]map[string]string
。
issues_types := make([]map[string]string, 0)
var m map[string]string
issues_i := viper.Get("issue-types")
// issues_i is interface{}
issues_s := issues_i.([]interface{})
// issues_s is []interface{}
for _, issue := range issues_s {
// issue is an interface{}
issue_map := issue.(map[interface{}]interface{})
// issue_map is a map[interface{}]interface{}
m = make(map[string]string)
for k, v := range issue_map {
m[k.(string)] = v.(string)
}
issues_types = append(issues_types, m)
}
fmt.Println(reflect.TypeOf(issues_types))
# []map[string]string
fmt.Println(issues_types)
# [map[source-type:Incident remote-type:Task]
# map[source-type:Service Request remote-type:Task]
# map[source-type:Change remote-type:Story]
# map[source-type:Problem remote-type:Task]]
请注意,我没有进行任何安全检查以使代码更小。但是,进行类型断言的正确方法是:
var i interface{} = "42"
str, ok := i.(string)
if !ok {
// A problem occurred, do something
}