Question

我正在尝试从servlet获取值到JSP页面，但我无法做到。 servlet页面

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String region = request.getParameter("region");
    String secretKey = request.getParameter("secret_key");
    String accessKey = request.getParameter("access_key");
    String VPC = request.getParameter("vpc");   
    LOG.info("region is  "+region);
    if(VPC == null){
        List<String> vpcs = RunEc2Command.getVPCForUSer(accessKey, secretKey, region);
        if(vpcs != null && vpcs.size() > 0) {
            LOG.info("Number of VPCs: "+vpcs.size());       
            response.setContentType("application/json");
            PrintWriter out = response.getWriter();
            JSONArray jsonAraay = new JSONArray(vpcs);
            LOG.info(jsonAraay);
            out.print(jsonAraay);
            out.flush();
        }
    }
}

并在index.jsp页面中，我试图获取JSONArray值

function getSubnets(){
var p = document.getElementById("vpc");

   var output2 = $.ajax({
     type: 'POST',
     url: 'http://localhost:8066/VMMigratorNew/ec2util',
     data: {
            "vpc":p.value
            },
    dataType:'json',
     success: function(data) {
                        $.each(data.jsaonArray, function(index){
                            var selectBox = "<select>"
                            $.each(data.jsonArray[index], function(key , value){
                                selectBox+="<option>"+key + "& value" + value + "</option>";

                            });
                            selectbox+="</select>";
                            $('vpc').html(selectBox);
                        });
            //return output2.responseText;
     }
});

} 下拉框未填充，下拉框的代码为

<select id="vpc" name="vpc" class="form-control" placeholder="Choose VPC" >
                                        <option value="" default selected>Select VPC</option>
                                     </select>

我是JSON的新手，感谢您的帮助。

Answer 1

试试这个......

Panel1.BackColor = Color.FromArgb(icolor Or &HFF000000)

没有从servlet到JSP页面获取JSON（对象/数组）

1 个答案: