使用ThreadLocal总是抛出异常

Question

private static ThreadLocal local = new ThreadLocal<>();

public static Connection getConnection() throws SQLException {
    Connection conn = local.get();
    if (conn == null) {
        conn = DriverManager.getConnection(url, user, password);
        local.set(conn);
    }
    return conn;
}

每次try结束后，总会抛出SQL异常，但如果把if删了的话，不会抛出，怎么解决啊？

Answer 1

报错发出来看看