01 go-zero入门--单体服务demo
目录
官方文档:
https://go-zero.dev/cn/docs/introduction
视频地址:
https://space.bilibili.com/387126464/channel/series
系统环境:
linux debain
配置环境:
1. golang安装
配置go环境变量:
vim /home/haima/.bashrc
export GOROOT="/usr/local/go" #go源码包
export GOPATH=/home/go # go工作路径
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin
source /home/haima/.bashrc
2. go module配置
go env -w GO111MODULE="on"
go env -w GOPROXY=https://goproxy.cn
go env -w GOMODCACHE=$GOPATH/pkg/mod
3. goctl安装
参考:
https://go-zero.dev/cn/docs/goctl/installation
goctl一键安装
Go 1.16 及以后版本
安装(mac&linux)
GOPROXY=https://goproxy.cn/,direct go install github.com/zeromicro/go-zero/tools/goctl@latest
查看版本
haima@haima-PC:~$ goctl -v
goctl version 1.3.4 linux/amd64
安装(windows)
$ go install github.com/zeromicro/go-zero/tools/goctl@latest
$ goctl -v
goctl version 1.4.0 windows/amd64
4.protoc,protoc-gen-go,protoc-gen-go-grpc安装
方式一：
如果goctl安装的版本是>=1.3.3版本的,执行以命令就可以自动安装protoc,protoc-gen-go,protoc-gen-go-grpc三个依赖
haima@haima-PC:~/Desktop$ goctl -v
goctl version 1.3.3 linux/amd64
$ goctl env check -i -f --verbose
[goctl-env]: preparing to check env
[goctl-env]: looking up "protoc"
[goctl-env]: "protoc" is not found in PATH
[goctl-env]: preparing to install "protoc"
"protoc" installed from cache
[goctl-env]: "protoc" is already installed in "/Users/keson/go/bin/protoc"
[goctl-env]: looking up "protoc-gen-go"
[goctl-env]: "protoc-gen-go" is not found in PATH
[goctl-env]: preparing to install "protoc-gen-go"
"protoc-gen-go" installed from cache
[goctl-env]: "protoc-gen-go" is already installed in "/Users/keson/go/bin/protoc-gen-go"
[goctl-env]: looking up "protoc-gen-go-grpc"
[goctl-env]: "protoc-gen-go-grpc" is not found in PATH
[goctl-env]: preparing to install "protoc-gen-go-grpc"
"protoc-gen-go-grpc" installed from cache
[goctl-env]: "protoc-gen-go-grpc" is already installed in "/Users/keson/go/bin/protoc-gen-go-grpc"
[goctl-env]: congratulations! your goctl environment is ready!
方式二： 源文件安装
goctl版本小于 1.3.3 参考以下面源文件安装,单个手动安装protoc,protoc-gen-go,protoc-gen-go-grpc三个依赖
1. protoc&protoc-gen-go安装
1.1 protoc安装
-
进入 protobuf release 页面，选择适合自己操作系统的压缩包文件下载,这里我选择
protoc-3.19.4-linux-x86_64.zip
https://github.com/protocolbuffers/protobuf/releases/download/v3.19.4/protoc-3.19.4-linux-x86_64.zip -
解压出来后进入该目录下的bin目录中，将protoc直接copy到你的gopath/bin目录下即可。
如$GOPATH/bin，这里不建议直接将其和系统的以下path放在一起。 -
export PATH=$PATH:$GOPATH/bin注意:$GOPATH/bin要加入到系统PATH中,如已加入可跳过
查看版本
haima@haima-PC:~$ protoc --version
libprotoc 3.19.4
1.2 protoc-gen-go 安装
如果goctl 版本已经是1.2.1以后了，可以忽略此步骤。
GOPROXY=https://goproxy.cn/,direct go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
查看$GOPATH/bin下是否有protoc-gen-go即可
【注】：如果后续在使用goctl生成代码时候，遇到以下问题
protoc --proto_path=/Users/seven/Developer/goenv/go-zero-looklook/app/usercenter/cmd/rpc/pb usercenter.proto --go_out=plugins=grpc:/Users/seven/Developer/goenv/go-zero-looklook/app/usercenter/cmd/rpc --go_opt=Musercenter.proto=././pb
goctl: generation error: unsupported plugin protoc-gen-go which installed from the following source:
google.golang.org/protobuf/cmd/protoc-gen-go,
github.com/protocolbuffers/protobuf-go/cmd/protoc-gen-go;
Please replace it by the following command, we recommend to use version before v1.3.5:
go get -u github.com/golang/protobuf/protoc-gen-go
goctl version: 1.3.0 darwin/amd64
直接执行
$ GOPROXY=https://goproxy.cn/,direct go get -u github.com/golang/protobuf/protoc-gen-go 下载包
查看版本
haima@haima-PC:~/Desktop$ protoc-gen-go --version
protoc-gen-go v1.27.1
1.3 protoc-gen-go-grpc 安装
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
查看版本
haima@haima-PC:~$ protoc-gen-go-grpc -version
protoc-gen-go-grpc 1.2.0
单体服务
创建greet服务
$ cd ~/go-zero-single_demo
$ go mod init go-zero-single_demo
$ goctl api new greet
$ go mod tidy
目录结构
cd ~/go-zero-single_demotree
服务的目录结构:
.
├── go.mod
├── go.sum
├── etc
│ └── greet-api.yaml
├── greet.api
├── greet.go
└── internal
├── config
│ └── config.go
├── handler
│ ├── greethandler.go
│ └── routes.go
├── logic
│ └── greetlogic.go
├── svc
│ └── servicecontext.go
└── types
└── types.go
编写逻辑
vim go-zero-single_demo/greet/internal/logic/greetlogic.go
func (l *GreetLogic) Greet(req types.Request) (*types.Response, error) {
return &types.Response{
Message: "Hello go-zero""+req.Name,
}, nil
}
启动并访问服务
- 启动服务
$ cd ~/go-zero-single_demo/greet
$ go run greet.go -f etc/greet-api.yaml
- 访问服务
$ curl -i -X GET \
http://localhost:8888/from/you
返回
HTTP/1.1 200 OK
Content-Type: application/json
Date: Sun, 07 Feb 2021 04:31:25 GMT
Content-Length: 27
{"message":"Hello go-zero name:you"}
goland启动配置:
greet.go -f etc/greet-api.yaml
修改GET入参
去除options限制的入参值
- 修改greet/greet.api 文件
type Request {
Name string `path:"name,options=you|me"`
}
修改为
type Request {
Name string `path:"name"`
}
- 重新生成代码
$ cd ~/go-zero-single_demo/greet
$ goctl api go -api greet.api -dir . -style gozero
文件greet/internal/types/types.go 会被重新生成
- 重启服务
$ cd ~/go-zero-single_demo/greet
$ go run greet.go -f etc/greet-api.yaml
- 访问服务
$ curl -i -X GET \
http://localhost:8888/from/haima
返回
{
"message": "Hello go-zero name:haima"
}
添加post请求
- 修改
greet/greet.api文件
type RequestJson {
Name string `json:"name"`
}
service greet-api {
......
@handler GreetPostHandler
post /from/:name(RequestJson) returns (Response)
}
- 重新生成代码
$ cd ~/go-zero-single_demo/greet
$ goctl api go -api greet.api -dir . -style gozero
会成生以下两个文件
- greet/internal/handler/greetposthandler.go
- greet/internal/logic/greetpostlogic.go
文件greet/internal/types/types.go里会自动添加如下代码
type RequestJson struct {
Name string `json:"name"`
}
- 修改
greet/internal/logic/greetpostlogic.go文件
func (l *GreetPostLogic) GreetPost(req types.RequestJson) (resp *types.Response, err error) {
// todo: add your logic here and delete this line
return &types.Response{
Message: "Hello go-zero name:"+req.Name,
}, nil
}
- 重启服务
$ cd ~/go-zero-single_demo/greet
$ go run greet.go -f etc/greet-api.yaml
- post请求
新建test.http请求文件
###
GET http://127.0.0.1:8888/from/haima HTTP/1.1
###
POST http://127.0.0.1:8888/from/haima HTTP/1.1
Content-Type: application/json
{
"name":"post haima"
}
返回
{
"message": "Hello go-zero name:post haima"
}
[Haima的博客]
http://www.cnblogs.com/haima/
