65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package config
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import (
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"fmt"
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"log"
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"time"
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"database/sql"
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_ "github.com/go-sql-driver/mysql"
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)
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// DBConfig 数据库配置
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var DBConfig = struct {
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Username string
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Password string
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Host string
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Port string
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DBName string
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}{
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Username: "root",
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Password: "root",
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Host: "127.0.0.1",
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Port: "3306",
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DBName: "nl_blog",
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}
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// DB 全局数据库连接池
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var DB *sql.DB
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// InitDB 初始化数据库连接
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func InitDB() {
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// 构建DSN
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local",
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DBConfig.Username, DBConfig.Password, DBConfig.Host, DBConfig.Port, DBConfig.DBName)
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// 打开数据库连接
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var err error
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DB, err = sql.Open("mysql", dsn)
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if err != nil {
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log.Fatalf("Failed to open database connection: %v", err)
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}
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// 配置连接池
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DB.SetMaxOpenConns(25) // 最大打开连接数
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DB.SetMaxIdleConns(5) // 最大空闲连接数
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DB.SetConnMaxLifetime(5 * time.Minute) // 连接最大生命周期
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DB.SetConnMaxIdleTime(30 * time.Second) // 连接最大空闲时间
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// 测试连接
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if err := DB.Ping(); err != nil {
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log.Fatalf("Failed to ping database: %v", err)
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}
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log.Println("Database connection established successfully!")
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}
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// CloseDB 关闭数据库连接
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func CloseDB() {
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if DB != nil {
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DB.Close()
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log.Println("Database connection closed!")
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}
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}
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