var b=FR.remoteEvaluate('=JOINARRAY('"+a+"',"\n")');
改
var b=FR.remoteEvaluate('=JOINARRAY("'+a+'","\n")');
改
var b=FR.remoteEvaluate('=JOINARRAY(SPLIT("'+a+'",","),"\n")');
改
var b=FR.remoteEvaluate('=replace(SPLIT("'+a+'",","),",","\n")');
改
var b=FR.remoteEvaluate('=JOINARRAY(SQL("JDBC2", "select distinct customer from fr_psi_zb_qds_tb", 1),"\n")');