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encoding_json_02.go
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encoding_json_02.go
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package main
import (
"encoding/json"
"fmt"
)
//多重json的序列化和反序列化
func main() {
////id:1 ,name:张三,parent:0;
////id:2 ,name:李四,parent:1;
////id:2 ,name:王五,parent:2;
//str:=`
// [{id:1,
// name:张三,
// parent:0,
// children:[
// id:2 ,
// name:李四,
// parent:1,
// children:[{
// id:3,
// name:王五,
// parent:2]
// ]}
// ]
// },]
//`
//------------------序列化-----------------------
type dst_struct struct {
Id int `json:"id"`
Name string `json:"name"`
Parent int `json:"parent"`
Children *dst_struct `json:"children"`
}
var dst_obj2 =dst_struct{
Id: 3,
Name: "王五",
Parent: 2,
Children: nil,
}
var dst_obj1 =dst_struct{
Id: 2,
Name: "李四",
Parent: 1,
Children: &dst_obj2,
}
var dst_obj =dst_struct{
Id: 1,
Name: "张三",
Parent: 0,
Children: &dst_obj1,
}
json_bytes, e := json.Marshal(&dst_obj)
check_err(e)
fmt.Printf("%v\n",json_bytes)
fmt.Printf("%s\n",string(json_bytes))
//输出:
//{"id":1,
// "name":"张三",
// "parent":0,
// "children":{"id":2,
// "name":"李四",
// "parent":1,
// "children":{"id":3,
// "name":"王五",
// "parent":2,
// "children":null}}}
//------------------反序列化-----------------------
//方式1:
//var Unmarshal_obj2 =dst_struct{
// Children:nil,
//}
//var Unmarshal_obj1 =dst_struct{
// Children:&Unmarshal_obj2,
//}
//
//var Unmarshal_obj =dst_struct{
// Children:&Unmarshal_obj1,
//}
//方式2:
//var Unmarshal_obj =dst_struct{
// Children:&dst_struct{
// Children:&dst_struct{
// Children:nil,
// },
// },
//}
//方式3:
var Unmarshal_obj =dst_struct{
}
e = json.Unmarshal(json_bytes, &Unmarshal_obj)
check_err(e)
fmt.Printf("%#v\n",Unmarshal_obj)
fmt.Printf("%#v\n",Unmarshal_obj.Children)
fmt.Printf("%#v\n",Unmarshal_obj.Children.Children)
//输出:
//main.dst_struct{Id:1, Name:"张三", Parent:0, Children:(*main.dst_struct)(0xc00005c540)}
//&main.dst_struct{Id:2, Name:"李四", Parent:1, Children:(*main.dst_struct)(0xc00005c510)}
//&main.dst_struct{Id:3, Name:"王五", Parent:2, Children:(*main.dst_struct)(nil)}
}
func check_err(err error) {
if err != nil {
fmt.Println(err)
panic(err)
}
}