spring

SpringMVC解决跨域问题，以及跨服务器调用时候session丢失的问题总结！！！ 从2个方面解决 1：web.xml配置中加上 <filter> <filter-name>CorsFilter</filter-name> <filter-class>org.apache.catalina.filters.CorsFilter</filter-class> <init-param> <param-name>cors.allowed.origins</param-name> <param-value>*</param-value> </init-param> <init-param> <param-name>cors.allowed.methods</param-name> <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value> </init-param> <init-param> <param-name>cors.allowed.headers</param-name> <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value> </init-param> <init-param> <param-name>cors.exposed.headers</param-name> <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value> </init-param> <!– 此处一定要这样设置，而且对应的客户端也要设置xhrFields:{withCredentials:true},否则session将失去 –> <init-param> <param-name>cors.support.credentials</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>cors.preflight.maxage</param-name> <param-value>10</param-value> </init-param> </filter> <filter-mapping> <filter-name>CorsFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> …….. 注意：最主要的是cors.support.credentials设置为true 2：jquey在使用ajax的时候一定要设置 xhrFields:{withCredentials:true} 出处：https://blog.csdn.net/cow5287687/article/details/71216332