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gorm框架实现基本的增删改查

news 2025/7/28 22:20:36

连接数据库

package mainimport ("github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)
}

创建表

package mainimport ("github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)type User struct {Id   int    `json:"id"`Name string `json:"name"`Age  int    `json:"age"`
}func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)db.AutoMigrate(&User{})
}

新增数据

package mainimport ("github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)type User struct {Id   int    `json:"id"`Name string `json:"name"`Age  int    `json:"age"`
}func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)u1 := &User{1, "张三", 23}db.Create(u1)
}

查找数据

package mainimport ("fmt""github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)type User struct {Id   int    `json:"id"`Name string `json:"name"`Age  int    `json:"age"`
}func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)var uu Userdb.Find(&uu, "name=?", "张三")fmt.Printf("%#v\n", uu)
}

修改数据

package mainimport ("fmt""github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)type User struct {Id   int    `json:"id"`Name string `json:"name"`Age  int    `json:"age"`
}func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)var user = User{Id: 1}db.Model(&user).Update("name", "李四")fmt.Printf("%#v\n", user)var uu Userdb.Find(&uu, "id=?", 1)fmt.Printf("%#v\n", uu)
}

删除数据

package mainimport ("fmt""github.com/jinzhu/gorm"_ "github.com/jinzhu/gorm/dialects/mysql"
)type User struct {Id   int    `json:"id"`Name string `json:"name"`Age  int    `json:"age"`
}func main() {db, err := gorm.Open("mysql","root:root@tcp(127.0.0.1:3306)/test?charset=utf8mb4&parseTime=True&loc=Local",)if err != nil {panic(err)}defer db.Close()db.DB().SetMaxIdleConns(10)db.DB().SetMaxOpenConns(100)var user = User{Id: 1}db.Delete(&user)fmt.Printf("%#v\n", user)var uu Userdb.Find(&uu, "id=?", 1)fmt.Printf("%#v\n", uu)
}