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main.go
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main.go
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package main
import (
"database/sql"
"fmt"
_ "github.com/go-sql-driver/mysql"
"github.com/pkg/errors"
)
func main() {
db, err := sql.Open("mysql", "root:123456@tcp(18.219.49.188:3306)/fss?charset=utf8")
if err != nil {
fmt.Println(err)
return
}
if err := db.Ping(); err != nil {
fmt.Println(err)
return
}
fmt.Println("连接成功")
defer db.Close()
res, err := db.Exec(`insert into student(name,sex,age,course) values (?,?,?,?)`, "su", "man", "18", "math")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(res.LastInsertId())
stu, err := queryStudentByName(db, "su")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(*stu)
stu, err = queryStudentByName(db, "su1")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(*stu)
}
type Student struct {
Id int
Name string
Sex string
Age string
Course string
}
func queryStudentByName(db *sql.DB, name string) (*Student, error) {
var s Student
row := db.QueryRow(`select * from student where name=?`, name)
err := row.Scan(&s.Id, &s.Name, &s.Sex, &s.Course, &s.Age)
if err == sql.ErrNoRows {
return nil, err
}
if err != nil {
return nil, errors.Wrap(err, "mysql异常")
}
return &s, nil
}