环境搭建

注意事项：不要使用go 1.15，不然会一系列依赖问题的引发问题
注意事项：不要使用go 1.15，不然会一系列依赖问题的引发问题
注意事项：不要使用go 1.15，不然会一系列依赖问题的引发问题

开发环境：windos10 + goland + go 1.14 SDK

项目新建

(1) 新建项目（多版本的情况下）

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（2）配置代理

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（3）查看新建项目MOD

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（4）设置相关的环境变量信息

#linux 下
export GO111MODULE=on
export GOPROXY=https://goproxy.io
# windows下设置如下环境变量
setx GO111MODULE on
setx GOPROXY https://goproxy.io

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（5）安装Mirco和GO-MIRCO过程遇到问题示例

可能会出现为问题现象：
1：使用的Mirco版本问题

使用 go get  github.com/micro/micro 它会下载的是V1版本的 

D:\code\go\Mceshi>go get github.com/micro/micro
go: github.com/micro/micro upgrade => v1.18.0

2：使用go get -u -v github.com/micro/micro 下载micro 的问题

go get: github.com/mholt/certmagic@v0.8.3 updating to
        github.com/mholt/certmagic@v0.12.0: parsing go.mod:
        module declares its path as: github.com/caddyserver/certmagic
                but was required as: github.com/mholt/certmagic

3：使用go get -u -v github.com/micro/go-micr之后引发系列的

# github.com/coreos/etcd/clientv3/balancer/resolver/endpoint
C:\Users\mayn\go\pkg\mod\github.com\coreos\etcd@v3.3.25+incompatible\clientv3\balancer\resolver\endpoint\endpoint.go:114:78: undefined: resolver.BuildOption
C:\Users\mayn\go\pkg\mod\github.com\coreos\etcd@v3.3.25+incompatible\clientv3\balancer\resolver\endpoint\endpoint.go:182:31: undefined: resolver.ResolveNowOption
# github.com/coreos/etcd/clientv3/balancer/picker
C:\Users\mayn\go\pkg\mod\github.com\coreos\etcd@v3.3.25+incompatible\clientv3\balancer\picker\err.go:37:44: undefined: balancer.PickOptions
C:\Users\mayn\go\pkg\mod\github.com\coreos\etcd@v3.3.25+incompatible\clientv3\balancer\picker\roundrobin_balanced.go:55:54: undefined: balancer.PickOptions
# github.com/micro/go-micro/transport/quic
C:\Users\mayn\go\pkg\mod\github.com\micro\go-micro@v1.18.0\transport\quic\quic.go:54:12: q.s.Close undefined (type quic.Session has no field or method Close)
C:\Users\mayn\go\pkg\mod\github.com\micro\go-micro@v1.18.0\transport\quic\quic.go:121:3: unknown field 'IdleTimeout' in struct literal of type quic.Config

解决问题3：

go mod edit -require=google.golang.org/grpc@v1.26.0
或
replace google.golang.org/grpc => google.golang.org/grpc v1.26.0

然后就剩余问题：

# github.com/micro/go-micro/transport/quic
C:\Users\mayn\go\pkg\mod\github.com\micro\go-micro@v1.18.0\transport\quic\quic.go:54:12: q.s.Close undefined (type quic.Session has no field or method Close)
C:\Users\mayn\go\pkg\mod\github.com\micro\go-micro@v1.18.0\transport\quic\quic.go:121:3: unknown field 'IdleTimeout' in struct literal of type quic.Config

然后继续解决问题：

replace github.com/lucas-clemente/quic-go => github.com/lucas-clemente/quic-go v0.14.1

然后新问题：

# github.com/lucas-clemente/quic-go/internal/handshake
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\crypto_setup.go:433:40: not enough arguments in call to h.conn.GetSessionTicket
        have ()
        want ([]byte)
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\qtls.go:109:3: cannot use c.Certificates (type []tls.Certificate) as type []qtls.Certificate in field value
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\qtls.go:110:3: cannot use c.NameToCertificate (type map[string]*tls.Certificate) as type map[string]*qtls.Certificate in field value
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\qtls.go:111:3: cannot use c.GetCertificate (type func(*tls.ClientHelloInfo) (*tls.Certificate, error)) as type func(*qtls.ClientHelloInfo) (*qtls.
Certificate, error) in field value
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\qtls.go:112:3: cannot use c.GetClientCertificate (type func(*tls.CertificateRequestInfo) (*tls.Certificate, error)) as type func(*qtls.Certificate
RequestInfo) (*qtls.Certificate, error) in field value
C:\Users\mayn\go\pkg\mod\github.com\lucas-clemente\quic-go@v0.14.1\internal\handshake\qtls.go:113:3: cannot use getConfigForClient (type func(*tls.ClientHelloInfo) (*qtls.Config, error)) as type func(*qtls.ClientHelloInfo) (*qtls.Co
nfig, error) in field value

去找好像quic-go@v0.14.1好像这个版本已经没了！！！
切换其他版本！

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会发现就算切换版本也会出现问题：

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（6）基于V2版本的安装（个人能通的流程）

参考大神：go-micro V2 从零开始（一）使用micro工具自动生成项目

• 1）安装V2版本的Mirco

D:\code\go\Mi_Onse>go get github.com/micro/micro/v2

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• 2） 查看安装情况

  
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• 3） 当前目录下生产一个微服务示例

操作：

D:\code\go\Mi_Onse>micro new --gopath=false greeter

结果：

D:\code\go\Mi_Onse>micro new --gopath=false greeter
Creating service go.micro.service.greeter in greeter

.
├── main.go
├── generate.go
├── plugin.go
├── handler
│   └── greeter.go
├── subscriber
│   └── greeter.go
├── proto
│   └── greeter
│       └── greeter.proto
├── Dockerfile
├── Makefile
├── README.md
├── .gitignore
└── go.mod


download protoc zip packages (protoc-$VERSION-$PLATFORM.zip) and install:

visit https://github.com/protocolbuffers/protobuf/releases

download protobuf for micro:

go get -u github.com/golang/protobuf/proto
go get -u github.com/golang/protobuf/protoc-gen-go
go get github.com/micro/micro/v2/cmd/protoc-gen-micro

compile the proto file greeter.proto:

cd greeter
make proto

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PS：1,5版本下执行的话：
会出现：

D:\code\go\M5>micro new --gopath=false greeter
panic: qtls.ConnectionState not compatible with tls.ConnectionState

goroutine 1 [running]:
github.com/lucas-clemente/quic-go/internal/handshake.init.1()
        C:/Users/mayn/go/pkg/mod/github.com/lucas-clemente/quic-go@v0.14.1/internal/handshake/unsafe.go:17 +0x139

D:\code\go\M5>

• 4） CD 到我们的微服务下cd greeter，使用protoc然后生成我们的micro的代码模板
  操作：

D:\code\go\Mi_Onse\greeter>protoc --proto_path=. --micro_out=. --go_out=. proto/greeter/greeter.proto

结果：

D:\code\go\Mi_Onse\greeter>protoc --proto_path=. --micro_out=. --go_out=. proto/greeter/greeter.proto
2021/01/20 11:59:12 WARNING: Missing 'go_package' option in "proto/greeter/greeter.proto",
please specify it with the full Go package path as
a future release of protoc-gen-go will require this be specified.
See https://developers.google.com/protocol-buffers/docs/reference/go-generated#package for more information.

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查看代码后我们就会报错，是因为上面我们没按生产模板指引去安装相关的依赖：

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这里无妨，可以暂时忽略，我们这时候可以直接启动看看服务：

• 5） 启动我们的刚刚新建的服务示例

D:\code\go\Mi_Onse\greeter>go run main.go

启动结果：

D:\code\go\Mi_Onse\greeter>go run main.go
go: finding module for package github.com/micro/go-micro/v2/logger
go: finding module for package github.com/micro/go-micro/v2
go: finding module for package github.com/micro/go-micro/v2/server
go: finding module for package github.com/golang/protobuf/proto
go: finding module for package github.com/micro/go-micro/v2/client
go: finding module for package google.golang.org/protobuf/reflect/protoreflect
go: finding module for package google.golang.org/protobuf/runtime/protoimpl
go: finding module for package github.com/micro/go-micro/v2/api
go: found github.com/micro/go-micro/v2 in github.com/micro/go-micro/v2 v2.9.1
go: found github.com/golang/protobuf/proto in github.com/golang/protobuf v1.4.3
go: found google.golang.org/protobuf/reflect/protoreflect in google.golang.org/protobuf v1.25.0
2021-01-20 12:02:04  file=v2@v2.9.1/service.go:200 level=info Starting [service] go.micro.service.greeter
2021-01-20 12:02:04  file=grpc/grpc.go:864 level=info Server [grpc] Listening on [::]:59501
2021-01-20 12:02:04  file=grpc/grpc.go:881 level=info Broker [http] Connected to 127.0.0.1:59502
2021-01-20 12:02:04  file=grpc/grpc.go:697 level=info Registry [mdns] Registering node: go.micro.service.greeter-fa6ee1bb-bef8-46ec-8884-e3be9810ec6c
2021-01-20 12:02:04  file=grpc/grpc.go:730 level=info Subscribing to topic: go.micro.service.greeter

• 6） 再去查看我们我们的上面错误异常，发现已经取消了

  
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• 7） 再去查看新建的微服务的下的go.mod文件为：

module greeter

go 1.13

// This can be removed once etcd becomes go gettable, version 3.4 and 3.5 is not,
// see https://github.com/etcd-io/etcd/issues/11154 and https://github.com/etcd-io/etcd/issues/11931.
replace google.golang.org/grpc => google.golang.org/grpc v1.26.0

require (
    github.com/golang/protobuf v1.4.3
    github.com/micro/go-micro/v2 v2.9.1
    google.golang.org/protobuf v1.25.0
)

• 8）使用我们的mirco查看我们的服务列表

  
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D:\code\go\Mi_Onse>micro list services

结果：

D:\code\go\Mi_Onse>micro list services
go.micro.api
go.micro.service.greeter
go.micro.web
micro.http.broker

• 9）启动Mirco web查看
  参考大神：golang微服务框架go-micro 入门笔记2.2 micro工具之微应用利器micro web

Microsoft Windows [版本 10.0.18363.1316]
(c) 2019 Microsoft Corporation。保留所有权利。

D:\code\go\Mi_Onse>micro web
2021-01-20 12:12:40  file=web/web.go:612 level=fatal service=web listen tcp :8082: bind: Only one usage of each socket address (protocol/network address/port) is normally permitted.

D:\code\go\Mi_Onse>

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• 10 ）启动Mirco api 网关
  注意：如果你使用的是：

D:\code\go\Mi_Onse>micro api --namespace=go.micro.srv

POSTMAN请求的话则会出现：

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修改为：切记不能使用micro api --namespace=go.micro.service 的这种形式
操作：

切记不能使用micro api --namespace=go.micro.service 的这种形式
切记不能使用micro api --namespace=go.micro.service 的这种形式
切记不能使用micro api --namespace=go.micro.service 的这种形式
正确的是下面：
D:\code\go\Mi_Onse> micro api --namespace=go.micro --type=service

结果

D:\code\go\Mi_Onse> micro api --namespace=go.micro --type=service
2021-01-20 12:19:18  file=api/api.go:285 level=info service=api Registering API Default Handler at /
2021-01-20 12:19:18  file=api/api.go:308 level=fatal service=api listen tcp :8080: bind: Only one usage of each socket address (protocol/network address/port) is normally permitted.

D:\code\go\Mi_Onse> micro api --namespace=go.micro --type=service
2021-01-20 12:19:19  file=api/api.go:285 level=info service=api Registering API Default Handler at /
2021-01-20 12:19:19  file=api/api.go:308 level=fatal service=api listen tcp :8080: bind: Only one usage of each socket address (protocol/network address/port) is normally permitted.

提示已经启动过：需要关闭之前启动的API服务，正常启动显示

D:\code\go\Mi_Onse> micro api --namespace=go.micro --type=service
2021-01-20 12:20:54  file=api/api.go:285 level=info service=api Registering API Default Handler at /
2021-01-20 12:20:54  file=http/http.go:90 level=info service=api HTTP API Listening on [::]:8080
2021-01-20 12:20:54  file=v2@v2.9.1/service.go:200 level=info service=api Starting [service] go.micro.api
2021-01-20 12:20:54  file=grpc/grpc.go:864 level=info service=api Server [grpc] Listening on [::]:60471
2021-01-20 12:20:54  file=grpc/grpc.go:697 level=info service=api Registry [mdns] Registering node: go.micro.api-ca9ff737-1aa4-45a7-8554-c5adcb62d8f9

再次请求：

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最终命令图示：

启动微服务
D:\code\go\Mi_Onse\greeter>go run main.go
启动WEB 服务
D:\code\go\Mi_Onse>micro web
启动API网关服务
D:\code\go\Mi_Onse> micro api --namespace=go.micro --type=service
查看服务列表：
D:\code\go\Mi_Onse>micro list services

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问题场景补充

1.当切换到其他版本或项目使用G1.15之后再切换回来出现了错误：

D:\code\go\Mi_Onse>micro
panic: qtls.ConnectionState not compatible with tls.ConnectionState

goroutine 1 [running]:
github.com/lucas-clemente/quic-go/internal/handshake.init.1()
        C:/Users/mayn/go/pkg/mod/github.com/lucas-clemente/quic-go@v0.14.1/internal/handshake/unsafe.go:17 +0x139

解决方法：
从新的执行获取micro工具

D:\code\go\Mi_Onse>go get github.com/micro/micro/v2

D:\code\go\Mi_Onse>go get github.com/micro/micro/v2

创建项目补充说明：

创建服务的时候可以知道服务注册中心的方式
micro new --type "srv" --registry consul  micro/rpc/srv