Golang framework tutorial collection

The Go framework provides the foundation for building distributed systems and microservices. Among them, Gin, Echo, Fasthttp, Beego and GORM are popular frameworks. They are used in web development, ORM, database operations, etc. respectively, providing simplicity and high performance.

Go framework introductory tutorial

Introduction

The Go language is known for its concurrency , efficiency and ease of use. The Go framework can provide a solid foundation when building distributed systems and microservices. This article will introduce some popular Go frameworks and provide practical examples to demonstrate their usage.

1. Gin

Gin is a lightweight web framework popular for its simplicity and high performance.

// 导入 Gin 库
import "github.com/gin-gonic/gin"

func main() {
    // 创建一个 Gin 路由器
    router := gin.Default()

    // 为 "/hello" 路径定义一个简单的路由
    router.GET("/hello", func(c *gin.Context) {
        c.String(200, "Hello World!")
    })

    // 监听 8080 端口，启动 Gin 服务器
    router.Run(":8080")
}

2. Echo

Echo is another popular web framework that provides an elegant and extensible API.

// 导入 Echo 库
import "github.com/labstack/echo/v4"

func main() {
    // 创建一个 Echo 实例
    e := echo.New()

    // 为 "/hello" 路径定义一个路由
    e.GET("/hello", func(c echo.Context) error {
        return c.String(200, "Hello World!")
    })

    // 监听 8080 端口，启动 Echo 服务器
    e.Start(":8080")
}

3. Fasthttp

Fasthttp is an ultra-fast web framework for applications that require high performance.

// 导入 Fasthttp 库
import "github.com/valyala/fasthttp"

func main() {
    // 创建一个 Fasthttp 请求处理程序
    handler := func(ctx *fasthttp.RequestCtx) {
        ctx.SetStatusCode(200)
        ctx.SetContentType("text/plain")
        ctx.WriteString("Hello World!")
    }

    // 监听 8080 端口，启动 Fasthttp 服务器
    fasthttp.ListenAndServe(":8080", handler)
}

4. Beego

Beego is a full-stack web framework that provides a range of advanced features such as ORM, caching and routing.

// 导入 Beego 库
import "github.com/astaxie/beego"

func main() {
    // 定义一个 Beego 控制器
    type MainController struct {
        beego.Controller
    }

    // 注册控制器路由
    beego.Router("/", &MainController{})

    // 控制器方法
    func (c *MainController) Get() {
        c.Ctx.WriteString("Hello World!")
    }

    // 启动 Beego 服务器
    beego.Run()
}

5. GORM

GORM is an ORM library for the Go language, which provides a simple and efficient way to operate the database.

// 导入 GORM 库
import "github.com/jinzhu/gorm"

func main() {
    // 连接到 MySQL 数据库
    db, err := gorm.Open("mysql", "user:password@tcp(localhost:3306)/dbname")
    if err != nil {
        panic(err)
    }

    // 创建一个结构体来表示数据库表
    type Product struct {
        ID    int
        Name  string
        Price int
    }

    // 将结构体映射到数据库表
    db.AutoMigrate(&Product{})

    // 创建一个新的产品记录
    product := Product{Name: "Product 1", Price: 100}
    db.Create(&product)

    // 查询产品记录
    var products []Product
    db.Find(&products)

    // 更新产品记录
    db.Model(&product).Update("Name", "Product 1 Updated")

    // 删除产品记录
    db.Delete(&product)
}

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