41 lines
872 B
Go
41 lines
872 B
Go
package dbConnectUtil
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import (
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"database/sql"
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"fmt"
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"log"
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_ "github.com/go-sql-driver/mysql"
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)
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// DB 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(username, password, host string, port int, dbName string) (*sql.DB, error) {
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log.Printf("开始初始化数据库连接")
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local",
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username, password, host, port, dbName)
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log.Printf("数据库连接参数: %s", dsn)
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log.Print("开始连接数据库")
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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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return DB, fmt.Errorf("数据库连接失败: %v", err)
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}
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// 测试数据库连接
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err = DB.Ping()
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if err != nil {
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return DB, fmt.Errorf("数据库连接测试失败: %v", err)
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}
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// 设置连接池参数
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DB.SetMaxOpenConns(20)
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DB.SetMaxIdleConns(10)
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return DB, nil
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}
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