connect mysql over
parent
1663759709
commit
8af13f9163
5
go.mod
5
go.mod
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@ -1,3 +1,8 @@
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module course
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go 1.22
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require (
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filippo.io/edwards25519 v1.1.0 // indirect
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github.com/go-sql-driver/mysql v1.8.1 // indirect
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)
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@ -0,0 +1,4 @@
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filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
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filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
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github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
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github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
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@ -0,0 +1,29 @@
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package main
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import (
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"database/sql"
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_ "github.com/go-sql-driver/mysql" //自动执行init()
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"log"
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)
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// go链接mysql示例
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func main() {
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//数据库信息
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dsn := "root:123456@tcp(43.143.245.135:3306)/wangaodev"
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//连接数据库
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db, err := sql.Open("mysql", dsn) //不会校验用户名和密码是否正确
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if err != nil {
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//dsn 格式不正确会报错
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log.Fatalf("dsn:%s invalid ,err%v\n", dsn, err)
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return
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}
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//校验用户名和密码是否正确
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//尝试连接数据库
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err = db.Ping()
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if err != nil {
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log.Fatalf("open %s failed,err%v\n", dsn, err)
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return
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}
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log.Printf("connect %s success.\n", dsn)
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defer db.Close()
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}
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@ -32,3 +32,11 @@ SQL慢查询优化
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MYSQL主从
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binlog
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MYSQL读写分离
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golang 的database/sql 原生支持链接池,是并发安全的
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这个标准库没有具体的实现,只是列出了一些第三方库需要实现的内容
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下载驱动
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go get -u github.com/go-sql-driver/mysql
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导入驱动
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