go-micro examples 中web form 代码学习（web类网站的微服务架构:micro api + micro web + web service + api service）

Rosalia ·

更新时间:2024-09-21

· 918 次阅读

以下对应 example/web 例子：

main.go 代码如下：

package main
import (
	"fmt"
	"log"
	"net/http"
	"github.com/micro/go-micro/web"
)
func helloWorldHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, `Hello World`)
}
func main() {
	service := web.NewService(
		web.Name("helloworld"),
	)
	service.HandleFunc("/", helloWorldHandler)
	if err := service.Init(); err != nil {
		log.Fatal(err)
	}
	if err := service.Run(); err != nil {
		log.Fatal(err)
	}
}

运行：
2020-01-09 17:52:58.159564 I | Listening on [::]:54815
访问： localhost:54815;
--------------------------------------------
以下对应 example/form 例子：
这个例子， 展示了 如何 使用 web services 和 api services  展示 一个 form 表单，并post 提交;
//有接口有页面，有点像 web 页面应用 ； //当然 api services  是 很通用的。
目录结构，如下：

web/main.go 提供  页面服务
api/proto/api.proto 代码如下：
syntax = "proto3";
import "github.com/micro/go-micro/api/proto/api.proto";
service Form {
    //常规 form
    rpc Submit(go.api.Request) returns (go.api.Response) {};
    //multipart form
    rpc Multipart(go.api.Request) returns (go.api.Response) {};
}
bogon:proto zhaozhiliang$  protoc --proto_path=$GOPATH/src:. --micro_out=. --go_out=. api.proto
api/main.go 代码如下：
package main
import (
	"bytes"
	"context"
	"fmt"
	proto "form/api/proto"
	"github.com/micro/go-micro"
	api "github.com/micro/go-micro/api/proto"
	"log"
	"mime"
	"mime/multipart"
	"strings"
)
type Form struct{}
func (f *Form) Submit(ctx context.Context, req *api.Request, rsp *api.Response) error {
	fmt.Println("received Submit Request")
	rsp.Body = fmt.Sprintf("got your value %+v", req.Post)
	return nil
}
func (f *Form) Multipart(ctx context.Context, req *api.Request, rsp *api.Response) error {
	fmt.Println("received Multipart Submit Request")
	ct := strings.Join(req.Header["Content-Type"].Values, ",")
	mt, p, err := mime.ParseMediaType(ct)
	if err != nil {
		return err
	}
	if !strings.HasPrefix(mt, "multipart/") {
		return fmt.Errorf("%v does not contain multipart", mt)
	}
	r := multipart.NewReader(bytes.NewReader([]byte(req.Body)), p["boundary"])
	form, err := r.ReadForm(32 << 20)
	if err != nil {
		return err
	}
	rsp.Body = fmt.Sprintf("got your values %+v", form)
	return nil
}
func main() {
	service := micro.NewService(
		micro.Name("go.micro.api.form"),
	)
	service.Init()
	proto.RegisterFormHandler(service.Server(), new(Form))
	if err := service.Run(); err != nil {
		log.Fatal(err)
	}
}

web/main.go 代码如下：
package main
import (
	"fmt"
	"github.com/micro/go-micro/web"
	"log"
	"net/http"
)
func index(w http.ResponseWriter, r *http.Request) {
	log.Println("received a web service!")
	fmt.Fprint(w, `
This is a regular form

This is a multipart form

`)
}
func main() {
	service := web.NewService(
		web.Name("go.micro.web.form"),
	)
	service.Init()
	service.HandleFunc("/", index)
	service.Run()
}

运行：
运行 api  网关 ，handler=api
micro api --handler=api
[root@liang form]# micro api --handler=api
2020-01-10 19:00:09.026984 I | [api] Registering API Request Handler at /
2020-01-10 19:00:09.030256 I | [api] HTTP API Listening on [::]:8080
2020-01-10 19:00:09.030538 I | [api] Transport [http] Listening on [::]:16917
2020-01-10 19:00:09.030740 I | [api] Broker [http] Connected to [::]:33890
2020-01-10 19:00:09.035881 I | [api] Registry [mdns] Registering node: go.micro.api-3123f62e-53d7-4069-ba4d-f1b2c95b8c10
[root@liang mnt]# micro list services
go.micro.api
go.micro.http.broker
[root@liang mnt]# 
运行 micro web  
[root@liang ~]# micro web
2020-01-10 19:02:32.852125 I | [web] HTTP API Listening on [::]:8082
2020-01-10 19:02:32.852256 I | [web] Transport [http] Listening on [::]:2482
2020-01-10 19:02:32.852356 I | [web] Broker [http] Connected to [::]:56416
2020-01-10 19:02:32.852632 I | [web] Registry [mdns] Registering node: go.micro.web-4a62f24f-b081-4dda-a99f-dee47a3e69bd
[root@liang mnt]# micro list services
go.micro.api
go.micro.http.broker
go.micro.web
[root@liang mnt]# 
运行 api service  /   api/main.go
[root@liang form]# go run api/main.go
2020-01-10 19:04:53.965230 I | Transport [http] Listening on [::]:13042
2020-01-10 19:04:53.965342 I | Broker [http] Connected to [::]:59072
2020-01-10 19:04:53.966033 I | Registry [mdns] Registering node: go.micro.api.form-43924b09-31ff-487e-a8f3-e052d4ff7734
[root@liang mnt]# micro list services
go.micro.api
go.micro.api.form
go.micro.http.broker
go.micro.web
[root@liang mnt]# 
运行 web service / web/main.go
[root@liang form]# go run web/main.go
2020-01-10 19:05:53.742502 I | Listening on [::]:55204
[root@liang mnt]# micro list services
go.micro.api
go.micro.api.form
go.micro.http.broker
go.micro.web
go.micro.web.form
[root@liang mnt]# 
浏览器访问：
http://192.168.1.129:8082/form
架构图：

go.mod 文件如下：
module form
go 1.13
require github.com/micro/go-micro v1.18.0 // indirect



作者：学海无涯书山有路
                    
 
                

                            微服务架构
                            Web
                            微服务
                            service
                            GO
                            学习
                            form
                            api
                            架构