多选框

拿到多选框选择
if (!$("input:checkbox[name=check]:checked").length)   未选择


return;
}else{
$("input:checkbox[name=check]:checked").each(function(index) {  已选择
var id = $(this).val();
if (index == 0){
ids = id;
} else{
ids = ids + "," + id;
}
});
}
window.location.href = "dutydmlist/exportDutyData?dutyIds=" + ids;


方法二
if(dutyId == null || dutyId == ""){
var el = document.getElementsByName('check'); 
var len = el.length;
for(var i=0; i<len; i++) { 
if(el[i].type=="checkbox" && el[i].checked) { 
chkValue = chkValue + el[i].value + ","; 
}
}

<input type="checkbox"  name="check"  value="id">

Controller
@ResponseBody
@RequestMapping(value = "/deleteItemByIds", method = RequestMethod.GET)
public Map<String, Object> deleteItemByIds(HttpServletRequest request,HttpServletResponse response) throws IOException{
String Ids = request.getParameter("Ids");
Ids = Ids.replaceFirst(",", "");
String[] ids = Ids.split(",");
int count = 0;//判断删除条数
Map<String,Object> result = new HashMap<String, Object>();
for (int i = 0; i < ids.length; i++) {
//循环删除
int num = ListService.deleteItemByIds(ids[i]);
if(num == 0){
result.put("message", "删除失败！");
result.put("msg_code", "0");
break;
}else{
count += num;
}
}
if(count == ids.length){
result.put("message", "删除成功！");
result.put("msg_code", "1");
}
return result;
}