function deleteAll() {
var all = document.getElementsByName("checkname");//獲得你選中的內容是一個數組
if (all == null || all.length == 1) {
alert("暫無訂單");
return;
} else {
var idStr = "";//定義一個自己要刪除的id的字符串
for ( var i = 0; i < all.length; i++) {
if (all[i].checked) {
idStr += all[i].value + ",";//將id用逗號，分隔連接起來
}
}
var result = confirm("選中刪除");
if (result) {
window.location.href = "deleteOrderAction?action=deleteAll&idStr="
+ idStr;
} else {
return null;
}
}
}
</script>

String[] arr = idStr.split(",");//將獲得id字符串數組使用逗號拆分獲得每一個id
for (String str : arr) {
int orderid = Integer.parseInt(str);
OrderService.deleteOrder(orderid);
}