golang map转json

// map to json

package main



import (
    "encoding/json"
    "fmt"


)


func main() {

    s := []map[string]interface{}{}

    m1 := map[string]interface{}{"name": "John", "age": 10}
    m2 := map[string]interface{}{"name": "Alex", "age": 12}

    s = append(s, m1, m2)
    s = append(s, m2)

    b, err := json.Marshal(s)
    if err != nil {
        fmt.Println("json.Marshal failed:", err)
        return
    }


    fmt.Println("b:", string(b))

}

　　output:

b: [{“age”:10,”name”:”John”},{“age”:12,”name”:”Alex”},{“age”:12,”name”:”Alex”}]