java script javascript return backstage, direct call js method of the parent window

the code of java (Java this output, calling the method); main function is, according to the status message, and then get information on the page, and finally more conditional jump page. 
@RequestMapping ( "/") 
public void Test (the HttpServletResponse Response) { 
	OUT = response.getWriter (); 
	Out.println ( "<Script> parent.frameCallback (\ '" + JSON.toJSONString (tipResult) + "\') </ Script> "); 
	out.flush (); 
	the out.close (); 
} 
parent.frameCallback (); parent parent window represents meaning. 
Click method of page js 
function frameCallback (MSG) { 
    MSG = the eval ( '(' + + MSG ')'); 
    IF (msg.success!) { 
        Layer.close (currTc); 
        layer.open ({ 
            type : 0, 
            offset: '100px', 
            title: 'prompt'
    } else {
//        var insureForm = $('#insureForm');
//        insureForm.removeAttr('target');
//        $('#check').val(2);
//        insureForm.submit();
        //弹出投保确认页面
        var orderNo = msg.businessNo;
        // window.location.href="policyConfirm.htm?orderNo="+orderNo
        currTc = layer.open({
            title: false,
            type: 2,
            closeBtn: 0,
            offset: ['0px', '0px'],
            area: ['100%', '100%'],
            content: jsbasepath + 'wx/product/policyConfirm.htm?orderNo=' + orderNo,
            success:function (layero) { 
                //layer.alert ( "successfully added!")
                $(layero).addClass ( "scroll-wrapper"); // Apple iframe scrollbar failure solution 
            } 
        }); 
    } 
}