Golang 项目全览：探索Go语言世界的无限可能

package main

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

func main() {
    r := gin.Default()
    r.GET("/hello", func(c *gin.Context) {
        c.String(200, "Hello, World!")
    })
    r.Run()
}

package main

import (
    "github.com/astaxie/beego"
)

type MainController struct {
    beego.Controller
}

func (this *MainController) Get() {
    this.Ctx.WriteString("Hello, World!")
}

func main() {
    beego.Router("/", &MainController{})
    beego.Run()
}

package main

import (
    "gorm.io/gorm"
    "gorm.io/driver/mysql"
)

type User struct {
    gorm.Model
    Name string
}

func main() {
    dsn := "user:password@tcp(127.0.0.1:3306)/database_name?charset=utf8mb4&parseTime=True&loc=Local"
    db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
    if err != nil {
        panic("failed to connect database")
    }

    db.AutoMigrate(&User{})
    user := User{Name: "Alice"}
    db.Create(&user)
}

package main

import (
    "github.com/gomodule/redigo/redis"
)

func main() {
    conn, err := redis.Dial("tcp", "localhost:6379")
    if err != nil {
        panic("Failed to connect to Redis")
    }
    defer conn.Close()

    _, err = conn.Do("SET", "key", "value")
    if err != nil {
        panic("Failed to set value in Redis")
    }

    result, err := redis.String(conn.Do("GET", "key"))
    if err != nil {
        panic("Failed to get value from Redis")
    }

    fmt.Println(result)
}

package main

import (
    "fmt"
    "time"
)

func sayHello() {
    fmt.Println("Hello, Goroutine!")
}

func main() {
    go sayHello()
    time.Sleep(time.Second)
}

package main

import (
    "fmt"
)

func sum(values []int, result chan int) {
    sum := 0
    for _, v := range values {
        sum += v
    }
    result <- sum
}

func main() {
    values := []int{1, 2, 3, 4, 5}
    result := make(chan int)

    go sum(values, result)
    fmt.Println(<-result)
}