我尝试使用
github.com/jackc/pgx/v5
包在 Go 程序中连接到 AWS RDS 中的 postgres 数据库,但出现以下错误:
failed to connect to `host=xxxxx.xxxxxxx.us-east-1.rds.amazonaws.com user=golangpg database=golangpg`: server error (FATAL: database "golangpg" does not exist (SQLSTATE 3D000))
exit status 1
即使明确指出数据库不存在也是错误,但我已经创建了 RDS 数据库,并且我也可以通过 pgAdmin 连接到该数据库。但是当我尝试在 Go 代码中连接时,出现了上述错误。
我已经检查了以下几点
package database
import (
"context"
"fmt"
"os"
"strconv"
"github.com/jackc/pgx/v5"
"github.com/joho/godotenv"
)
func PGConnection() *pgx.Conn {
envErr := godotenv.Load()
if envErr != nil {
fmt.Println("Error in loading .env file, ", envErr)
}
host := os.Getenv("DB_URL")
port := os.Getenv("DB_PORT")
user := os.Getenv("DB_USERNAME")
password := os.Getenv("DB_PASSWORD")
dbname := os.Getenv("DB_NAME")
portInt, er := strconv.Atoi(port)
if er != nil {
fmt.Println("Error in converting string to number", er)
}
var err error
pgConnString := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=require", host, portInt, user, password, dbname)
pgConn, err := pgx.Connect(context.Background(), pgConnString)
if err != nil {
fmt.Printf("Unable to connection to database: \n%v\n", err)
os.Exit(1)
} else {
fmt.Println("Database connection establised to db ", dbname)
}
return pgConn
}
var Connection *pgx.Conn = PGConnection()
这里可能出现什么错误。即使从 pgAdmin 我也可以创建表,但无法从我的 Go 代码连接。