这是jjava代码

   @At
    @Ok("jsp:website.schoolmanagement")
    public void SchoolmanagementSvw() {
    	
    }
    

这是js代码，usr = “SchoolmanagementSvw”

function addTab(title, url){
	var jq = top.jQuery;
			if (jq('#tabs').tabs('exists', title)){
				jq('#tabs').tabs('select', title);
			} else {
				var content = '<iframe scrolling="auto" frameborder="0"  src="'+url+'" style="width:100%;height:100%;"></iframe>';
				jq('#tabs').tabs('add',{
					title:title,
					content:content,
					closable:true
				});
			}
		}

用的是easyui 的 tabs 。然后chrome 的请求里会产生两个请求，一个红的，一个黑的。
红的请求出错

Request URL:http://127.0.0.1:8080/mds/SchoolmanagementSvw
Referrer Policy:no-referrer-when-downgrade
Request Headers
Provisional headers are shown
Referer:http://127.0.0.1:8080/mds/SigninSvw
Upgrade-Insecure-Requests:1
User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36

黑的就正常，页面可以正常访问。

Request URL:http://127.0.0.1:8080/mds/SchoolmanagementSvw
Request Method:GET
Status Code:200 OK
Remote Address:127.0.0.1:8080
Referrer Policy:no-referrer-when-downgrade
Response Headers
view source
Content-Length:7334
Content-Type:text/html;charset=UTF-8
Date:Fri, 31 Mar 2017 02:08:17 GMT
Server:Apache-Coyote/1.1
X-Powered-By:nutz/1.r.60 <nutzam.com>
Request Headers
view source
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip, deflate, sdch, br
Accept-Language:zh-CN,zh;q=0.8
Cache-Control:no-cache
Connection:keep-alive
Cookie:JSESSIONID=909E0674F386042153126CA501D2A29D
Host:127.0.0.1:8080
Pragma:no-cache
Referer:http://127.0.0.1:8080/mds/SigninSvw
Upgrade-Insecure-Requests:1
User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36

不理解为什么