go json解析

package main

import (
"encoding/json"
"fmt"
)

type Student struct {
Name string
Age int
Guake bool
Classes []string
Price float32
}

func (s *Student) ShowStu() {
fmt.Println("show Student :")
fmt.Println("\tName\t:", s.Name)
fmt.Println("\tAge\t:", s.Age)
fmt.Println("\tGuake\t:", s.Guake)
fmt.Println("\tPrice\t:", s.Price)
fmt.Printf("\tClasses\t: ")
for _, a := range s.Classes {
fmt.Printf("%s ", a)
}
fmt.Println("")
}
func main() {
st := &Student{
"Xiao Ming",
16,
true,
[]string{"Math", "English", "Chinese"},
9.99,
}
fmt.Println("before JSON encoding :")
st.ShowStu()

b, err := json.Marshal(st)
if err != nil {
fmt.Println("encoding faild")
} else {
fmt.Println("encoded data : ")
fmt.Println(b)
}
ch := make(chan string, 1)
go func(c chan string, str string) {
c <- str
}(ch, string(b))
strData := <-ch
fmt.Println("--------------------------------")
stb := &Student{}
stb.ShowStu()
err = json.Unmarshal([]byte(strData), &stb)
if err != nil {
fmt.Println("Unmarshal faild")
} else {
fmt.Println("Unmarshal success")
stb.ShowStu()
}
}

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