我有一个具有以下格式的config.json
:
{
"recordType1": [
"field1", "field2", "field3", "field4", "field5"
],
"recordType2": [
"field1", "field2", "field3", "field4", "field5", "field6", "field7"
]
}
如果可能的话,我想把它转换为一片地图,其中每张地图本身就是一个"键",而"值"是一个切片。
我可以像这样手动完成此操作:
package main
import ("fmt")
func main() {
m := make(map[string][]string, 0)
m2 := make(map[string][]string, 0)
sliceOfMaps := make([]map[string][]string, 0)
m["recordType1"] = []string{"field1", "field2", "field3"}
m2["recordType2"] = []string{"field1", "field2", "field3", "field4", "field5"}
sliceOfMaps = append(sliceOfMaps, m, m2)
fmt.Println(m)
fmt.Println(m2)
fmt.Println(sliceOfMaps)
}
相反,我想调用config.json
内容上的json.Unmarshal
,以将该 json 解析为完全相同的结构。
到目前为止我尝试过:
package main
import (
"fmt"
"encoding/json"
"io/ioutil"
"log"
)
func main() {
file, err := ioutil.ReadFile("config/config.json")
if err != nil {
log.Fatal("Err Reading File:", err)
}
var sliceOfMaps []map[string][]string
sliceOfMaps = make([]map[string][]string, 0)
err = json.Unmarshal(file, &sliceOfMaps)
if err != nil {
log.Fatal("Err Parsing JSON", err)
}
fmt.Println(sliceOfMaps)
}
这会产生错误:
Err Parsing JSONjson: cannot unmarshal object into Go value of type []map[string][]string
非常感谢任何帮助,欢迎澄清问题。谢谢。
JSON 输入和"手动"示例都使用切片映射,而不是映射切片。 将目标类型更改为map[string][]string
,您应该很高兴:
package main
import (
"fmt"
"encoding/json"
)
var file = []byte(`{
"recordType1": [
"field1", "field2", "field3", "field4", "field5"
],
"recordType2": [
"field1", "field2", "field3", "field4", "field5", "field6", "field7"
]
}`)
func main() {
output := map[string][]string{}
if err := json.Unmarshal(file, &output); err != nil {
panic(err)
}
fmt.Println(output)
}
生成以下输出:
map[recordType1:[field1 field2 field3 field4 field5] recordType2:[field1 field2 field3 field4 field5 field6 field7]]
游乐场链接。