04 Real Project (Web Server)

Chaliye ek simple Task API banate hain bina kisi framework ke (Standard Library).

1. Project Setup 📁

mkdir go-server
cd go-server
go mod init go-server # Go module initialize

2. Server Code (main.go) 🖥️

package main

import (
    "encoding/json"
    "fmt"
    "net/http"
)

// Task Structure (JSON ke liye struct tags lagaye)
type Task struct {
    ID   int    `json:"id"`
    Name string `json:"name"`
}

// Dummy Data
var tasks = []Task{
    {ID: 1, Name: "Code in Go"},
    {ID: 2, Name: "Eat Pizza"},
}

// Handler Functions
func getTasks(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Type", "application/json")
    json.NewEncoder(w).Encode(tasks) // Struct to JSON
}

func main() {
    // Route Definition
    http.HandleFunc("/tasks", getTasks)

    fmt.Println("Server starting on port 8080... 🚀")

    // Server Start (Port 8080)
    err := http.ListenAndServe(":8080", nil)
    if err != nil {
        fmt.Println("Error:", err)
    }
}

3. Run & Test 🧪

1. Run karein: go run main.go
2. Browser me jayen: http://localhost:8080/tasks

Output:

[
  {"id": 1, "name": "Code in Go"},
  {"id": 2, "name": "Eat Pizza"}
]

---

4. Next Steps (Improvement) 📈

Ab aap isme ye features add kar sakte hain:

1. POST Method: Naya task add karna (http.MethodPost check karein).
2. Database: MongoDB ya Postgres connect karein.
3. Framework: Badi apps ke liye Gin ya Fiber use karein.

🎉 Congratulations! Aapne Go seekh li aur Project bhi bana liya.