PHP中文网2017-04-18 09:09:25
可以考虑使用cors-filter
CORS Filter is a universal solution for fitting Cross-Origin Resource Sharing (CORS) support to Java web applications. CORS is a recent W3C effort to introduce a standard mechanism for enabling cross-domain requests in web browsers and participating servers.
具体实现可以参考CORS 跨域 实现思路及相关解决方案，里面详细说了CORS和JSONP实现的对比，以及web.xml中CORS的具体配置
怪我咯2017-04-18 09:09:25
springmvc 4.2开始新增对cors的支持，推荐一篇blog ：http://blog.csdn.net/isea533/article/details/50449907
如果走nginx 也可以在nginx配置
如下：
server {
location / {
if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
# add_header 'Access-Control-Max-Age' 1728000;
add_header 'Content-Type' 'text/plain charset=UTF-8';
add_header 'Content-Length' 0;
return 200;
}
} 但是这样做会有个问题 高并发会影响效率
阿神2017-04-18 09:09:25
很普遍的开发需求,这种问题不应该来这里问,搜索spring cors文档 , http://docs.spring.io/spring/docs/current/spring-framework-reference/html/cors.html