63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
package main
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import (
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"encoding/json"
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fmt "fmt"
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)
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// BaseModel 公共基础模型
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type BaseModel struct {
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ID int64 `json:"id,string,omitempty"`
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CreatedAt string `json:"created_at,omitempty"`
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}
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// Order 订单模型（全标签演示）
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type Order struct {
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BaseModel `json:",inline"`
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OrderNo string `json:"order_no"`
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Status int `json:"status,omitempty"`
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Phone int64 `json:"phone,string,omitempty"`
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Password string `json:"-"`
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Extra struct {
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Level int `json:"level"`
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} `json:",nosquash"`
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Ignore string `json:",allowunknown"`
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}
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func main() {
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order := Order{
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BaseModel: BaseModel{ID: 202606001, CreatedAt: "2026-06-02"},
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OrderNo: "BULMA-ORDER-001",
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Password: "secret_123",
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}
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data, _ := json.MarshalIndent(order, "", " ")
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fmt.Println("\n=== 高级标签运行结果 ===")
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fmt.Println(string(data))
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// 演示 allowunknown 的反序列化功能
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fmt.Println("\n=== 反序列化测试（含未知字段）===")
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jsonWithUnknown := `{
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"id": "202606002",
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"created_at": "2026-06-02",
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"order_no": "BULMA-ORDER-002",
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"unknown_field": "test",
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"extra_field": 123
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}`
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var newOrder Order
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err := json.Unmarshal([]byte(jsonWithUnknown), &newOrder)
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if err != nil {
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fmt.Printf("反序列化失败：%v\n", err)
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} else {
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fmt.Printf("成功解析：%+v\n", newOrder)
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}
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// 演示 omitempty 的效果
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fmt.Println("\n=== omitempty 效果对比 ===")
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emptyOrder := Order{
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BaseModel: BaseModel{ID: 0}, // ID 为 0，会被 omit
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OrderNo: "BULMA-ORDER-003",
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}
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data2, _ := json.MarshalIndent(emptyOrder, "", " ")
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fmt.Println(string(data2))
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}
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