Consider using 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.

For specific implementation, please refer to CORS cross-domain implementation ideas and related solutions, which details the comparison between CORS and JSONP implementation, as well as the specific configuration of CORS in web.xml

springmvc 4.2 has added support for cors. I recommend a blog: http://blog.csdn.net/isea533/article/details/50449907
If you use nginx, you can also configure it in nginx
as follows:

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; } }

But there will be a problem with this. High concurrency will affect efficiency

A very common development requirement. This kind of question should not be asked here. Search the spring cors document, http://docs.spring.io/spring/docs/current/spring-framework-reference/html/cors.html

If you want to implement jsonp request, take a look at my Demo: http://git.oschina.net/gradle/ssmbootstrap_table