64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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 User struct {
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Id int
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Name string
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Age int
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}
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func (this *User) Call() {
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fmt.Println("user is called...")
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fmt.Printf("%v\n", this)
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}
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func (this User) ThisCall() {
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fmt.Println("user is called...")
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fmt.Printf("%v\n", this)
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}
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func reflectNum(arg interface{}) {
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fmt.Println("type: ", reflect.TypeOf(arg))
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fmt.Println("value: ", reflect.ValueOf(arg))
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}
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func main() {
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var num float64 = 1.2345
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reflectNum(num)
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user := User{1, "Aceld", 18}
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DoFieldAndMethod(user)
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}
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func DoFieldAndMethod(input interface{}) {
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// 获取input的type
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inputType := reflect.TypeOf(input)
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fmt.Println("inputType is: ", inputType.Name())
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// 获取input的value
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inputValue := reflect.ValueOf(input)
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fmt.Println("inputValue is: ", inputValue)
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fmt.Println(inputType.NumMethod())
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// 通过type获取里面的字段
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// 1. 获取interface的reflect.Type，通过Type得到NumField，进行遍历
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// 2. 得到每个field，数据类型
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// 3. 通过field有一个Interface()方法得到对应的value
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// for i := 0; i < inputType.NumField(); i++ {
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// field := inputType.Field(i)
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// value := inputValue.Field(i).Interface()
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// fmt.Printf("%s: %v = %v\n", field.Name, field.Type, value)
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// }
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// 通过type获取里面的方法，调用
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for i := 0; i < inputType.NumMethod(); i++ {
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m := inputType.Method(i)
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fmt.Printf("%s: %v\n", m.Name, m.Type)
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}
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}
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