java - springMVC 怎么实现跨域请求?

Question

springMVC 怎么实现跨域请求?配置了下没有实现!

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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