在使用go-micro api时用http访问总是not found

源码

package main

import (
    "context"
    "github.com/asim/go-micro/v3"
    "github.com/asim/go-micro/v3/errors"
    "log"
    "microservices/gomicro/02/proto"
)

type Example struct {
}
type Foo struct {
}

func (e *Example) Call(ctx context.Context, req *proto.CallRequest, resp *proto.CallResponse) error {
    log.Println("收到Example.Call请求")
    if len(req.Name) == 0 {
        return errors.BadRequest("go.micro.api.example", "no name")
    }
    resp.Message = "Exmaple.Call接收到了你的请求" + req.Name
    return nil
}

func (f *Foo) Bar(ctx context.Context, req *proto.EmptyRequest, resp *proto.EmptyResponse) error {
    log.Println("收到Foo.Bar请求")
    return nil
}

func main() {
    service := micro.NewService(
        micro.Name("go.micro.api.example"),
    )

    service.Init()
    err := proto.RegisterExampleHandler(service.Server(), new(Example))
    if err != nil {
        println(err.Error())
    }
    err = proto.RegisterFooHandler(service.Server(), new(Foo))
    if err != nil {
        println(err.Error())
    }
    err = service.Run()
    if err != nil {
        log.Fatal(err.Error())
    }
}