忽略某个字段
package main
import (
"encoding/json"
"fmt"
)
type User struct{
Email string `json;"email"`
Password string `json:"password"`
}
func main() {
user := User{"email", "1"}
a,_ := json.Marshal(struct{
*User
Password bool `json:"password,omitempty"`
}{
User: &user,
})
fmt.Println(string(a))
}
添加额外的字段
json.Marshal(struct {
*User
Token string `json:"token"`
Password bool `json:"password,omitempty"`
}{
User: user,
Token: token,
})
合并两个结构体
type BlogPost struct {
URL string `json:"url"`
Title string `json:"title"`
}
type Analytics struct {
Visitors int `json:"visitors"`
PageViews int `json:"page_views"`
}
json.Marshal(struct{
*BlogPost
*Analytics
}{post, analytics})
将字符串解析到两个结构体中
json.Unmarshal([]byte(`{
"url": "attila@attilaolah.eu",
"title": "Attila's Blog",
"visitors": 6,
"page_views": 14
}`), &struct {
*BlogPost
*Analytics
}{&post, &analytics})
重命名字段
type CacheItem struct {
Key string `json:"key"`
MaxAge int `json:"cacheAge"`
Value Value `json:"cacheValue"`
}
json.Marshal(struct{
*CacheItem
// Omit bad keys
OmitMaxAge omit `json:"cacheAge,omitempty"`
OmitValue omit `json:"cacheValue,omitempty"`
// Add nice keys
MaxAge int `json:"max_age"`
Value *Value `json:"value"`
}{
CacheItem: item,
// Set the int by value:
MaxAge: item.MaxAge,
// Set the nested struct by reference, avoid making a copy:
Value: &item.Value,
})
将字段序列化为字符串
type TestObject struct {
Field1 int `json:",string"`
}
