1.進行ajax請求時加入

2.過濾器中設置請求頭

//跨域配置

response1.setHeader("Access-Control-Allow-Credentials","true");

response1.setHeader("Access-Control-Allow-Origin","http://192.168.1.114:8021");（注意：這里寫前端服務器地址，如果不是這個服務器的請求，則會被過濾）

response1.setHeader("Access-Control-Allow-Headers","Content-Type,?Access-Control-Allow-Headers,?Authorization,?X-Requested-With");