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Golang, call method (and fill arguments) with reflection
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package main | |
import ( | |
"fmt" | |
"reflect" | |
) | |
type Aaa struct { | |
a string | |
} | |
type Bbb struct { | |
b int | |
} | |
type Handler struct{} | |
func (h Handler) GET(a Aaa, b Bbb, ptr *Aaa) string { | |
return "OK" + a.a + " ptr:" + ptr.a | |
} | |
func main() { | |
handler := new(Handler) | |
objects := make(map[reflect.Type]interface{}) | |
objects[reflect.TypeOf(Aaa{})] = Aaa{"jkljkL"} | |
objects[reflect.TypeOf(new(Aaa))] = &Aaa{"pointer!"} | |
objects[reflect.TypeOf(Bbb{})] = Bbb{} | |
//in := make([]reflect.Value, 0) | |
method := reflect.ValueOf(handler).MethodByName("GET") | |
fmt.Println(method) | |
in := make([]reflect.Value, method.Type().NumIn()) | |
fmt.Println("method type num in:", method.Type().NumIn()) | |
for i := 0; i < method.Type().NumIn(); i++ { | |
t := method.Type().In(i) | |
object := objects[t] | |
fmt.Println(i, "->", object) | |
in[i] = reflect.ValueOf(object) | |
} | |
fmt.Println("method type num out:", method.Type().NumOut()) | |
response := method.Call(in) | |
fmt.Println(response) | |
} |
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