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

可以考慮使用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 melications. CORS is a recent W3C effort to introduce a standard mecalism for enabling sol​​d fal片區 5,5000 00m 筆

具體實作可以參考CORS 跨域 實現想法及相關解決方案，裡面詳細說了CORS和JSONP實現的對比，以及web.xml中CORS的具體配置

Answer 2

springmvc 4.2開始新增對cors的支持，推薦一篇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;  
        }  
}  

但是這樣做會有個問題 高並發會影響效率

Answer 3

很普遍的開發需求,這種問題不應該來這裡問,搜尋spring cors文檔 , http://docs.spring.io/spring/docs/current/spring-framework-reference/html/cors.html

Answer 4

想實現jsonp請求麼，看看我的Demo：http://git.oschina.net/gradle/ssmbootstrap_table