浏览器可以显示图片，真机测试显示不出来

 <div class="mui-input-row" id="code" name="code" >  
                <img id="codevalidate" src="" />  

            </div>  

mui(".mui-input-row").on('tap',"#changeId",function(e) {  
                    console.log("这是验证码---");   
                    doc.getElementById("validate").value="";                      
                     var url = "http://localhost:82/sso/code" + "?" + (new Date()).valueOf();  
                    doc.getElementById("codevalidate").src=url;   
                    console.log("url="+url);  
                    console.log("这是验证码---");   
                });  

一条测试图片路径url=http://localhost:82/sso/code?1512704176126