我很新，去嘗試學習，我正在用杜松子酒的服務器設置一個應用程序。 我設法讓它與主包中的所有東西一起工作，我想更好地組織一個包（我管理）中的所有最相關的，並通過文件拆分每個組CRUD。golang gin-gonic和包中的文件拆分
所以在初始化函數內包的「主」的文件，我定義爲：
Router := gin.New()
Router.Use(gin.Logger())
Router.Use(gin.Recovery())
和我，雖然我將能夠在包中使用它這樣的互相文件：
v1 := Router.Group("/api/v1/todos")
v1.Use(AuthRequired())
{
v1.POST("/", CreateTodo)
v1.GET("/", FetchAllTodo)
v1.GET("/:id", FetchSingleTodo)
v1.PUT("/:id", UpdateTodo)
v1.DELETE("/:id", DeleteTodo)
}
或
packagename.Router.Group
但都不是工作，我得到：
undefined: Router in Router.Group
stéphane PS：我確實爲軟件包設置了一個子文件夾，如果它在一個文件中，我就可以構建它。
我雖然該解決方案是路由器變量聲明爲* gin.Engine但同時它編譯罰款，我上Router.Group呼叫恐慌錯誤
讓我發表一些部分的代碼：
maincode.go：
package main
import (
"fmt"
"./apirest"
"github.com/braintree/manners"
)
func main(){
fmt.Printf("hello world.\n")
//router.Run()
manners.ListenAndServe(":8080", apirest.Router)
}
然後我在2個文件分割apirest包：
apirest.go（我做了人工清理，梅比我錯過了一個進口）：是處理所有申報
package apirest
import (
"fmt"
"github.com/gin-gonic/gin"
"github.com/braintree/manners"
"os"
"os/signal"
)
//Router pour gérer l'api
var Router *gin.Engine
/*
MAIN FUNCTION
*/
func init() {
Router := gin.New()
Router.Use(gin.Logger())
Router.Use(gin.Recovery())
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func(){
for sig := range c {
// sig is a ^C, handle it
fmt.Printf("ctl+c catched "+sig.String())
manners.Close()
}
}()
LoadMonitor()
}
，然後todoCRUD.go文件時，todoCRUD.go和apirest.go是在同一子文件夾apirest（和編譯OK）：
package apirest
import (
"fmt"
"github.com/gin-gonic/gin"
"gopkg.in/validator.v2"
"github.com/jinzhu/gorm"
"strconv"
"net/http"
"time"
)
//Todo definition d'un element todo
type Todo struct {
gorm.Model
CreatedAt time.Time
UpdatedAt time.Time
OwnerID int `json:"ownerid" validate:"nonzero"`
URL string `json:"url"`
}
//TransformedTodo version pour le retour d'api sans certaines infos
type TransformedTodo struct {
ID uint `json:"id"`
CreatedAt time.Time
UpdatedAt time.Time
OwnerID uint `json:"ownerid"`
URL string `json:"url"`
}
//LoadTodo permet de lancer le mappage todos
func LoadTodo(){
v1 := Router.Group("/api/v1/todos")
{
v1.POST("/", CreateTodo)
v1.GET("/", FetchAllTodo)
v1.GET("/:id", FetchSingleTodo)
v1.PUT("/:id", UpdateTodo)
v1.DELETE("/:id", DeleteTodo)
}
}
//CreateTodo génération d'un todo
func CreateTodo(c *gin.Context) {
owner, _ := strconv.Atoi(c.PostForm("ownerid"))
todo := Todo{
OwnerID: owner,
URL: c.PostForm("url"),
};
v := validator.NewValidator()
if errs := v.Validate(todo); errs!=nil {
errors := errs.(validator.ErrorMap)
var errOuts []string
for f, e := range errors {
errOuts = append(errOuts, fmt.Sprintf("\t - %s (%v)\n", f, e))
}
//c.JSON(500, gin.H{"Error": errs.Error()})
c.JSON(500, gin.H{"Erreur sur le(s) champ(s) : ": errOuts})
} else {
db, _ := Database()
defer db.Close()
db.Save(&todo)
c.JSON(http.StatusCreated, gin.H{"status" : http.StatusCreated, "message" : "Todo item created successfully!", "resourceId": todo.ID})
}
}
//FetchAllTodo récupération de tous les todos
func FetchAllTodo(c *gin.Context) {
var todos []Todo
var _todos []TransformedTodo
db, _ := Database()
defer db.Close()
db.Find(&todos)
if (len(todos) <= 0) {
c.JSON(http.StatusNotFound, gin.H{"status" : http.StatusNotFound, "message" : "No todo found!"})
return
}
//transforms the todos for building a good response,
//je peux choisir des champs a ne pas display
for _, item := range todos {
status := false
if (item.Status == 1) {
status = true
} else {
status = false
}
_todos = append(_todos, TransformedTodo{ID: item.ID, URL:item.URL})
}
c.JSON(http.StatusOK, gin.H{"status" : http.StatusOK, "data" : _todos})
}
//FetchSingleTodo Récupération d'un seul todo en fonction de son id
func FetchSingleTodo(c *gin.Context) {
var todo Todo
todoID := c.Param("id")
db, _ := Database()
defer db.Close()
db.First(&todo, todoID)
if (todo.ID == 0) {
c.JSON(http.StatusNotFound, gin.H{"status" : http.StatusNotFound, "message" : "No todo found!"})
return
}
_todo := TransformedTodo{ID: todo.ID, URL:todo.URL}
c.JSON(http.StatusOK, gin.H{"status" : http.StatusOK, "data" : _todo})
}
//UpdateTodo Mise à jour d'un todo
func UpdateTodo(c *gin.Context) {
var todo Todo
todoID := c.Param("id")
db, _ := Database()
defer db.Close()
db.First(&todo, todoID)
if (todo.ID == 0) {
c.JSON(http.StatusNotFound, gin.H{"status" : http.StatusNotFound, "message" : "No todo found!"})
return
}
db.Model(&todo).Update("title", c.PostForm("title"))
db.Model(&todo).Update("completed", c.PostForm("completed"))
c.JSON(http.StatusOK, gin.H{"status" : http.StatusOK, "message" : "Todo updated successfully!"})
}
//DeleteTodo Suppression d'un todo
func DeleteTodo(c *gin.Context) {
var todo Todo
todoID := c.Param("id")
db, _ := Database()
defer db.Close()
db.First(&todo, todoID)
if (todo.ID == 0) {
c.JSON(http.StatusNotFound, gin.H{"status" : http.StatusNotFound, "message" : "No todo found!"})
return
}
db.Delete(&todo)
c.JSON(http.StatusOK, gin.H{"status" : http.StatusOK, "message" : "Todo deleted successfully!"})
}
的想法是在同一個包爲每個實體xxxxCRUD.go文件來處理，但整個文件夾。
確切errror是：
PS D:\www\developpement> go run .\maincode.go [GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production. - using env: export GIN_MODE=release - using code: gin.SetMode(gin.ReleaseMode)
panic: runtime error: invalid memory address or nil pointer dereference [signal 0xc0000005 code=0x0 addr=0x0 pc=0x46cc0f]
goroutine 1 [running]: panic(0x831880, 0xc04200a080) C:/Go/src/runtime/panic.go:500 +0x1af /D/www/developpement/apirest.LoadTodo() D:/www/developpement/apirest/todoCRUD.go:33 +0x2f [Router.Group] /D/www/developpement/apirest.init.1() D:/www/developpement/apirest/apirest.go:73 +0x220 [LoadTodo()] /D/www/developpement/apirest.init() D:/www/developpement/apirest/todoCRUD.go:190 +0x80 [last line] main.init() D:/www/developpement/maincode.go:13 +0x3a [manners.ListenAndServe(":8080", apirest.Router)] exit status 2
我希望這將有助於瞭解！
感謝您的時間和幫助！
斯特凡
你能爲此提供您的非工作源？ （考慮到你的解釋，一切似乎都是按順序的） – Niko