golang如何连接mysql

package main

import (
    "database/sql"
    "fmt"
    _ "github.com/go-sql-driver/mysql"
)

func main() {
    // 数据库连接字符串
    dataSourceName := "user:password@tcp(127.0.0.1:3306)/dbname"

    // 连接数据库
    db, err := sql.Open("mysql", dataSourceName)
    if err != nil {
        fmt.Println("Failed to connect to database:", err)
        return
    }
    defer db.Close()

    // 测试数据库连接
    err = db.Ping()
    if err != nil {
        fmt.Println("Failed to ping database:", err)
        return
    }

    fmt.Println("Successfully connected to database")

    // 执行查询
    rows, err := db.Query("SELECT id, name FROM users")
    if err != nil {
        fmt.Println("Failed to query database:", err)
        return
    }
    defer rows.Close()

    // 处理查询结果
    for rows.Next() {
        var id int
        var name string
        err = rows.Scan(&id, &name)
        if err != nil {
            fmt.Println("Failed to scan row:", err)
            return
        }
        fmt.Printf("ID: %d, Name: %s\n", id, name)
    }

    // 检查查询过程中是否有错误
    if err = rows.Err(); err != nil {
        fmt.Println("Error during rows iteration:", err)
    }
}