Golang框架与第三方库的安全集成如何？

package main

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

var db *sql.DB

func main() {
    r := gin.Default()

    // 建立与 MySQL 数据库的连接
    db, err := sql.Open("mysql", "your_username:your_password@tcp(127.0.0.1:3306)/your_database_name?charset=utf8mb4&parseTime=True")
    if err != nil {
        panic(err)
    }
    defer db.Close()

    r.GET("/users", func(c *gin.Context) {
        rows, err := db.Query("SELECT * FROM users")
        if err != nil {
            c.JSON(500, gin.H{"error": err.Error()})
            return
        }
        defer rows.Close()

        type User struct {
            ID       int
            Name     string
            Password string
        }
        var users []User
        for rows.Next() {
            var user User
            if err := rows.Scan(&user.ID, &user.Name, &user.Password); err != nil {
                c.JSON(500, gin.H{"error": err.Error()})
                return
            }
            users = append(users, user)
        }

        c.JSON(200, gin.H{"users": users})
    })

    r.Run(":8080")
}