Gin Web项目中如何巧妙运用Wire依赖注入？

require (
    github.com/google/wire v0.5.0 // 或更新版本
    github.com/gin-gonic/gin v1.8.1 // 或更新版本
)

// user.go
type UserService struct {
    // ...
}

func NewUserService() *UserService {
    return &UserService{}
}

// user_controller.go
type UserController struct {
    UserService *UserService
}

func NewUserController(userService *UserService) *UserController {
    return &UserController{UserService: userService}
}

// wire.go
import (
    "github.com/google/wire"
    "your-project/user" // 替换成你的包路径
    "github.com/gin-gonic/gin"
)

func InitializeApp() (*gin.Engine, error) {
    return wire.Build(
        user.NewUserService,
        user.NewUserController,
        NewGinEngine,
    )()
}

func NewGinEngine(controller *user.UserController) *gin.Engine {
    router := gin.Default()
    // ... 添加路由 ...
    return router
}

func main() {
    engine, err := InitializeApp()
    if err != nil {
        // ... 处理错误 ...
    }
    engine.Run(":8080")
}