feat(auth): 添加完整的用户认证API项目

- 实现用户注册、登录、JWT令牌认证功能
- 集成Gin、GORM、Viper、Zap等框架
- 添加密码加密、数据库操作、中间件等完整功能
- 配置多环境支持、日志轮转、CORS处理
- 创建完整的项目结构和配置文件体系

Web开发/03go-gorm-demo/query_advanced.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"fmt"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+//type User struct {
+//	ID        uint   `gorm:"primaryKey"`
+//	Name      string `gorm:"size:100"`
+//	Email     string `gorm:"size:100;unique"`
+//	Age       int
+//	Active    bool `gorm:"default:true"`
+//	CreatedAt time.Time
+//}
+
+func main() {
+	db, _ := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
+	db.AutoMigrate(&User{})
+
+	// 插入测试数据
+	users := []User{
+		{Name: "Alice", Email: "alice@example.com", Age: 30, Active: true},
+		{Name: "Bob", Email: "bob@example.com", Age: 25, Active: false},
+		{Name: "Charlie", Email: "charlie@example.com", Age: 35, Active: true},
+		{Name: "David", Email: "david@example.com", Age: 28, Active: true},
+	}
+	db.Create(users)
+
+	// 1. 多条件查询
+	var result1 []User
+	db.Where("age > ? AND active = ?", 25, true).Find(&result1)
+	fmt.Printf("Age > 25 AND active: %d users\n", len(result1))
+
+	// 2. OR 查询
+	var result2 []User
+	db.Where("age < ? OR active = ?", 30, false).Find(&result2)
+	fmt.Printf("Age < 30 OR inactive: %d users\n", len(result2))
+
+	// 3. 模糊查询
+	var result3 []User
+	db.Where("name LIKE ?", "%li%").Find(&result3)
+	fmt.Printf("Name contains 'li': %d users\n", len(result3))
+
+	// 4. 仅查询指定字段
+	var result4 []User
+	db.Select("name", "email").Find(&result4)
+	fmt.Printf("Selected fields: %d users\n", len(result4))
+	for _, u := range result4 {
+		fmt.Printf("  - %s (%s)\n", u.Name, u.Email)
+	}
+
+	// 5. 统计查询
+	var count int64
+	db.Model(&User{}).Where("active = ?", true).Count(&count)
+	fmt.Printf("Active users count: %d\n", count)
+
+	// 6. 聚合查询
+	var avgAge float64
+	db.Model(&User{}).Select("AVG(age)").Row().Scan(&avgAge)
+	fmt.Printf("Average age: %.2f\n", avgAge)
+
+	// 7. 分组查询
+	type Result struct {
+		Active bool
+		Count  int64
+	}
+	var groupResult []Result
+	db.Model(&User{}).Select("active, count(*) as count").Group("active").Scan(&groupResult)
+	fmt.Println("Group by active:")
+	for _, r := range groupResult {
+		fmt.Printf("  Active=%v: %d users\n", r.Active, r.Count)
+	}
+}