访问users数据库

src/db.rs

@@ -0,0 +1,10 @@
+use sqlx::postgres::PgPool;  // 修改导入路径
+use std::env;
+
+pub async fn create_pool() -> Result<PgPool, sqlx::Error> {
+    dotenvy::dotenv().ok();
+    let database_url = env::var("DATABASE_URL")
+        .expect("DATABASE_URL must be set in .env file");
+    
+    PgPool::connect(&database_url).await
+}