$("#year1").change(function(){ var dataString = $(this).val(); $.ajax({ type: "POST", url:"Servlet", dataType: "json", data: { year :JSON.stringify(dataString) }, success: function(result) { console.log(result); $('#category1').multipleSelect({ filter: true, selectAll: false }); } }); return false; }); //servlet response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String[] year = request.getParameterValues("year1"); //error
var
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