Database is locked (defering rows didn't work)

Question

I have a problem with SQLite3 in my Golang project. I want to insert data into my database but It gives me error database is locked. I know that it was here the same question (Sqlite3 error: database is locked in golang) but answer from there didn't work. I don't know what I'm doing wrong. Here is my code:

var (
    tpl   *template.Template
    db, _ = sql.Open("sqlite3", "database/pastozbior.db")
)
func main() {
    http.HandleFunc("/", addCopypasta)
    http.ListenAndServe(":8000", nil)
} 
func getCopypasta() []Copypasta {
    copypastaList := []Copypasta{}
    var title, body string

    rows, _ := db.Query("select title, body from copypasta")
    for rows.Next() {
        rows.Scan(&title, &body)
        copypastaList = append(copypastaList, Copypasta{title, body})
    }
    defer rows.Close()
    return copypastaList
}

func addCopypasta(w http.ResponseWriter, r *http.Request) {
    tpl.ExecuteTemplate(w, "main.html", nil)

    if r.Method == "POST" {
        r.ParseForm()
        // add copypasta to database
        stmt, err := db.Prepare("INSERT INTO copypasta(title, body, approved) values(?,?,0)")
        if err != nil {
            log.Fatal(err)
        }

        res, err := stmt.Exec("testTitle", "TestBody")
        if err != nil {
            log.Fatal(err)
        }
        id, err := res.LastInsertId()
        if err != nil {
            log.Fatal(err)
        }
        fmt.Println(id)

    }
}

Thanks in advance for the help!

Answer 1

您必须将row.Close（）直接放在创建行的行的下方。 因为，在你做某事时出现恐慌的情况下，永远不会达到延迟，并且行永远不会关闭，然后就会出现这样的错误情况。在你的代码中，你抛弃了defer-construct in go高于其他编程环境的巨大优势。