refactor: 重构项目结构，迁移后端至 mengyastore-backend-go，新增 Java 后端、前端功能更新及部署文档

mengyastore-backend-go/main.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/gin-contrib/cors"
+	"github.com/gin-gonic/gin"
+
+	"mengyastore-backend/internal/auth"
+	"mengyastore-backend/internal/config"
+	"mengyastore-backend/internal/database"
+	"mengyastore-backend/internal/handlers"
+	"mengyastore-backend/internal/storage"
+)
+
+func main() {
+	cfg, err := config.Load("config.json")
+	if err != nil {
+		log.Fatalf("加载配置失败: %v", err)
+	}
+
+	// 初始化数据库连接
+	db, err := database.Open(cfg.DatabaseDSN)
+	if err != nil {
+		log.Fatalf("初始化数据库失败: %v", err)
+	}
+
+	store, err := storage.NewProductStore(db)
+	if err != nil {
+		log.Fatalf("初始化商品存储失败: %v", err)
+	}
+	orderStore, err := storage.NewOrderStore(db)
+	if err != nil {
+		log.Fatalf("初始化订单存储失败: %v", err)
+	}
+	siteStore, err := storage.NewSiteStore(db)
+	if err != nil {
+		log.Fatalf("初始化站点存储失败: %v", err)
+	}
+	wishlistStore, err := storage.NewWishlistStore(db)
+	if err != nil {
+		log.Fatalf("初始化收藏夹存储失败: %v", err)
+	}
+	chatStore, err := storage.NewChatStore(db)
+	if err != nil {
+		log.Fatalf("初始化聊天存储失败: %v", err)
+	}
+
+	r := gin.Default()
+	r.Use(cors.New(cors.Config{
+		AllowOrigins:     []string{"*"},
+		AllowMethods:     []string{"GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"},
+		AllowHeaders:     []string{"Origin", "Content-Type", "Accept", "Authorization", "X-Admin-Token"},
+		ExposeHeaders:    []string{"Content-Length"},
+		AllowCredentials: false,
+		MaxAge:           12 * time.Hour,
+	}))
+
+	r.GET("/api/health", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"status": "ok"})
+	})
+
+	authClient := auth.NewSproutGateClient(cfg.AuthAPIURL)
+
+	publicHandler := handlers.NewPublicHandler(store)
+	adminHandler := handlers.NewAdminHandler(store, cfg, siteStore, orderStore, chatStore)
+	orderHandler := handlers.NewOrderHandler(store, orderStore, siteStore, authClient)
+	statsHandler := handlers.NewStatsHandler(orderStore, siteStore)
+	wishlistHandler := handlers.NewWishlistHandler(wishlistStore, authClient)
+	chatHandler := handlers.NewChatHandler(chatStore, authClient)
+
+	r.GET("/api/products", publicHandler.ListProducts)
+	r.POST("/api/checkout", orderHandler.CreateOrder)
+	r.POST("/api/products/:id/view", publicHandler.RecordProductView)
+	r.GET("/api/stats", statsHandler.GetStats)
+	r.POST("/api/site/visit", statsHandler.RecordVisit)
+	r.GET("/api/site/maintenance", statsHandler.GetMaintenance)
+	r.GET("/api/orders", orderHandler.ListMyOrders)
+	r.POST("/api/orders/:id/confirm", orderHandler.ConfirmOrder)
+
+	r.POST("/api/admin/verify", adminHandler.VerifyAdminToken)
+	r.GET("/api/admin/products", adminHandler.ListAllProducts)
+	r.POST("/api/admin/products", adminHandler.CreateProduct)
+	r.PUT("/api/admin/products/:id", adminHandler.UpdateProduct)
+	r.PATCH("/api/admin/products/:id/status", adminHandler.ToggleProduct)
+	r.DELETE("/api/admin/products/:id", adminHandler.DeleteProduct)
+	r.POST("/api/admin/site/maintenance", adminHandler.SetMaintenance)
+	r.GET("/api/admin/site/smtp", adminHandler.GetSMTPConfig)
+	r.POST("/api/admin/site/smtp", adminHandler.SetSMTPConfig)
+	r.GET("/api/admin/orders", adminHandler.ListAllOrders)
+	r.DELETE("/api/admin/orders/:id", adminHandler.DeleteOrder)
+
+	r.GET("/api/wishlist", wishlistHandler.GetWishlist)
+	r.POST("/api/wishlist", wishlistHandler.AddToWishlist)
+	r.DELETE("/api/wishlist/:id", wishlistHandler.RemoveFromWishlist)
+
+	// 用户聊天路由
+	r.GET("/api/chat/messages", chatHandler.GetMyMessages)
+	r.POST("/api/chat/messages", chatHandler.SendMyMessage)
+
+	// 管理员聊天路由
+	r.GET("/api/admin/chat", adminHandler.GetAllConversations)
+	r.GET("/api/admin/chat/:account", adminHandler.GetConversation)
+	r.POST("/api/admin/chat/:account", adminHandler.AdminReply)
+	r.DELETE("/api/admin/chat/:account", adminHandler.ClearConversation)
+
+	log.Println("萌芽小店后端启动于 http://localhost:8080")
+	if err := r.Run(":8080"); err != nil {
+		log.Fatalf("服务器启动失败: %v", err)
+	}
+}
+