golang encoding/json

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 1 package main 2  3 import ( 4     "bytes" 5     "encoding/json" 6     "fmt" 7 ) 8  9 type ColorGroup struct {10     ID     int11     Name   string12     Colors []string13 }14 15 func main() {16 17     //---------------Marshal18     group := ColorGroup{19         ID:     1,20         Name:   "Reds",21         Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},22     }23     b, err := json.Marshal(group)24     if err != nil {25         fmt.Println("error:", err)26     }27     //os.Stdout.Write(b)28     fmt.Println(string(b[:]))29 30     //---------------Unmarshal31     var jsonBlob = []byte(`[32             {"ID":1,"Name":"Reds1","Colors":["Crimson","Red1","Ruby1","Maroon1"]},33             {"ID":2,"Name":"Reds2","Colors":["Crimson","Red2","Ruby2","Maroon2"]},34             {"ID":3,"Name":"Reds3","Colors":["Crimson","Red3","Ruby3","Maroon3"]}35         ]`)36 37     var animals []ColorGroup38     error := json.Unmarshal(jsonBlob, &animals)39     if error != nil {40         fmt.Println("error:", error)41     }42 43     //fmt.Printf("%+v", animals)44     //fmt.Println(animals)45     for i, x := range animals {46         fmt.Println(i, x)47 48     }49     //---------------Indent50     dst := new(bytes.Buffer)51     json.Indent(dst, jsonBlob, "##", "**")52     fmt.Println(dst)53 }