How to use golang framework?

Go frameworks (such as Gin) provide the foundation for building high-performance web applications. In this guide, you will learn how to: 1. Choose a Go framework such as Gin; 2. Install Gin and create a project; 3. Set up routing to handle requests; 4. Use Gin to handle GET requests and return JSON; 5. Build a simple The API is used as an example for practical operation.

Developing Web Applications Using the Go Framework

The Go framework provides a platform for developing highly scalable, high-performance web applications. Base. This article will guide you on how to build a simple web application using the popular Go framework.

Choose a framework

There are several Go frameworks to choose from, including Gin, Echo, and Gorilla Mux. For beginners, Gin is recommended as it is easy to use and offers a lot of features.

Install Gin

Install Gin using the following command:

go get -u github.com/gin-gonic/gin

Create your project

Create A new Go module, then create a new file named main.go:

go mod init myapp
mkdir -p cmd/myapp
touch cmd/myapp/main.go

Import the necessary Gin packages in main.go:

import (
    "github.com/gin-gonic/gin"
)

Set up routing

Gin uses a router to handle incoming requests. The following code sets up a route that handles the /hello path when it is requested:

func main() {
    r := gin.Default()
    r.GET("/hello", func(c *gin.Context) {
        c.JSON(200, gin.H{"message": "Hello, World!"})
    })
    r.Run() // 运行 HTTP 服务器
}

Run the application

To run the application, run The following command:

go run cmd/myapp/main.go

Visit http://localhost:8080/hello to see the response.

Practical case: Building a simple API

The following is a practical case using Gin to build a simple API:

import (
    "github.com/gin-gonic/gin"
)

type Todo struct {
    ID      int       `json:"id"`

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