<div class="form-group"><label class="control-label col-md-2">。。。<span class="required"> * </span></label><div class="col-md-6"><input type="hidden" name="contPartyInfo.ourPartyNames" id="ourPartyNames"/><input type="hidden" name="contPartyInfo.ourPartyIds" 
 
id="ourPartyIds"/><select id="ourPartyIdSelect" multiple="multiple" class="form-control select2"><option value=""></option>
            <%for(ourParty in ourPartyList){ %>
            <option value="${ourParty.dictionaryKey!''}" >${ourParty.dictionaryValue!''}</option
 
>
            <%}%>
        </select></div>

</div>

js（回顯）：

// 多選下拉賦值
if(""!="${contPartyInfo.ourPartyIds!''}"){
    $('#ourPartyIdSelect').select2("val","${contPartyInfo.ourPartyIds!''}".split(','));
}

賦值：

var ourPartyIds="";
var ourPartyNames="";
$("#ourPartyIdSelect option:selected"
 
).each(function(i,t){
    if(ourPartyIds == ""){
        ourPartyIds = $(t).val();
        ourPartyNames = $(t).text();
    }else{
        ourPartyIds=ourPartyIds+","+$(t).val();
        ourPartyNames=ourPartyNames+","+$(t).text();
    }
})

$("#ourPartyIds").val(ourPartyIds);
$("#ourPartyNames").val(ourPartyNames);

頁面效果：