Golang初级Todo管理应用开发教程

type Task struct {<br>    ID     int    `json:"id"`<br>    Title  string `json:"title"`<br>    Done   bool   `json:"done"`<br>}<br><br>var tasks []Task<br>var nextID = 1

tasks

nextID

func addTask(title string) {<br>    task := Task{ID: nextID, Title: title, Done: false}<br>    tasks = append(tasks, task)<br>    nextID++<br>}

func getTasks() []Task {<br>    return tasks<br>}

func completeTask(id int) bool {<br>    for i := range tasks {<br>        if tasks[i].ID == id {<br>            tasks[i].Done = true<br>            return true<br>        }<br>    }<br>    return false<br>}

func deleteTask(id int) bool {<br>    for i, task := range tasks {<br>        if task.ID == id {<br>            tasks = append(tasks[:i], tasks[i+1:]...)<br>            return true<br>        }<br>    }<br>    return false<br>}

fmt

bufio

func showMenu() {<br>    fmt.Println("\n--- Todo 应用 ---")<br>    fmt.Println("1. 查看所有任务")<br>    fmt.Println("2. 添加任务")<br>    fmt.Println("3. 标记完成")<br>    fmt.Println("4. 删除任务")<br>    fmt.Println("5. 退出")<br>    fmt.Print("请选择操作: ")<br>}

main

net/http

func tasksHandler(w http.ResponseWriter, r *http.Request) {<br>    switch r.Method {<br>    case "GET":<br>        w.Header().Set("Content-Type", "application/json")<br>        json.NewEncoder(w).Encode(getTasks())<br>    case "POST":<br>        var task Task<br>        json.NewDecoder(r.Body).Decode(&task)<br>        addTask(task.Title)<br>        w.WriteHeader(http.StatusCreated)<br>    }<br>}

func main() {<br>    http.HandleFunc("/tasks", tasksHandler)<br>    fmt.Println("服务器启动在 :8080")<br>    http.ListenAndServe(":8080", nil)<br>}

curl

curl -X POST -H "Content-Type: application/json" -d '{"title":"学习Golang"}' http://localhost:8080/tasks