[golang]标准库-json

package main
import (
  "encoding/json"
  "fmt"
)
type JsonExample struct {
  Name   string   `json:"name,omitempty"` // 序列化后显示为name，若其值为空，则不显示该字段
  Age    int      `json:"age"`            // 序列化后显示为age
  School string   `json:"university"`     // 序列化后显示为university
  Class  []string `json:"class"`
}
// 对象序列化为json
func JsonMarshal() {
  var jex JsonExample = JsonExample{
    Name:   "Go",
    Age:    12,
    School: "TsingHua",
    Class:  []string{"YuWen", "ShuXue", "YingYu"},
  }
  by, _ := json.Marshal(jex)
  fmt.Println(string(by))
}
// json反序列化为对象
func JsonUnmarshal() {
  var v JsonExample
  by := []byte(`{"name": "python","age":18,"university": "ustc","class": ["WuLi","HuaXue","ShengWu"]}`)
  json.Unmarshal(by, &v)
  fmt.Printf("%+v\n", v)
}
func main() {
  JsonMarshal() // {"name":"Go","age":12,"university":"TsingHua","class":["YuWen","ShuXue","YingYu"]}
  fmt.Println("=============")
  JsonUnmarshal() // {Name:python Age:18 School:ustc Class:[WuLi HuaXue ShengWu]}
}