后端拦截器添加以下内容
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Methods", "*");
response.setHeader("Access-Control-Allow-Headers", "x-access-token");
response.setHeader("Access-Control-Expose-Headers", "*");