Getting Started Guide to Golang Framework

Answer: The Go framework provides infrastructure for backend application development. Detailed description: Recommended frameworks: Gin (efficient REST API framework) and Echo (lightweight REST API framework). Practical case: Use Gin to build a REST API to obtain customer data. The controller methods define the logic to retrieve and return customer data from the database. Run the server startup API.

Go Framework Getting Started Guide

Preface
The Go framework provides developers with the tools to build robust , the infrastructure required for scalable and efficient back-end applications. This article will take you through the basics of the Go framework and provide practical examples to help you get started.

Choose the right framework
Go has many excellent frameworks, each with its own pros and cons. Here are two popular frameworks:

• Gin: An efficient, feature-rich REST API framework
• Echo: A simple , Lightweight REST API framework

Practical case-Building a simple REST API
We will use the Gin framework to build a simple REST API to obtain customer data .

Install Gin

go get github.com/gin-gonic/gin

Define model

type Customer struct {
    ID        int    `json:"id"`
    FirstName string `json:"first_name"`
    LastName  string `json:"last_name"`
}

Define route

func main() {
    engine := gin.Default()
    engine.GET("/customers", getCustomers)
    engine.GET("/customers/:id", getCustomer)
    engine.Run()
}

Implementing controller methods

func getCustomers(c *gin.Context) {
    // 从数据库检索所有客户
    customers := []Customer{{1, "John", "Doe"}, {2, "Jane", "Smith"}}

    // 将客户数据返回到 API 响应中
    c.JSON(200, customers)
}

func getCustomer(c *gin.Context) {
    // 从路径参数中获取客户 ID
    id := c.Param("id")

    // 根据 ID 从数据库中检索客户
    customer := Customer{1, "John", "Doe"}

    // 将客户数据返回到 API 响应中
    c.JSON(200, customer)
}

Running the server

engine.Run()

Conclusion
This article provides an introduction to the Go framework Basics and demonstrates their usage through a simple REST API practical case. By choosing the right framework and understanding its basic concepts, you can quickly build robust and efficient backend applications.

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