47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
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package main
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import (
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"fmt"
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"reflect"
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)
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type student struct {
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Name string `json:"name"`
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Score int `json:"score"`
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}
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var stu1 = student{
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Name: "小王子",
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Score: 90,
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}
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func main() {
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t := reflect.TypeOf(stu1)
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fmt.Println(t.Name(), t.Kind()) // student struct
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fmt.Println(t.NumField()) //2
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// 通过for循环遍历结构体的所有字段信息
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for i := 0; i < t.NumField(); i++ {
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field := t.Field(i)
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fmt.Println(field)
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fmt.Printf("name:%s index:%d type:%v json tag:%v\n", field.Name, field.Index, field.Type, field.Tag.Get("json"))
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}
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// 通过字段名获取指定结构体字段信息
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if scoreField, ok := t.FieldByName("Score"); ok {
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fmt.Printf("name:%s index:%d type:%v json tag:%v\n", scoreField.Name, scoreField.Index, scoreField.Type, scoreField.Tag.Get("json"))
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}
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fmt.Println("======================ValueOf==================")
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v := reflect.ValueOf(stu1)
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fmt.Println(v.NumField()) //2
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for i := 0; i < v.NumField(); i++ {
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field2 := v.Field(i)
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fmt.Println(field2)
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} //遍历值
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wangzi := v.FieldByName("Name")
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fmt.Println(wangzi)
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}
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