Springmvc ajax跨域请求处理方法实例详解
发布时间:2020-12-14 22:13:27 所属栏目:Java 来源:网络整理
导读:上次给一个网站写网站 前后端分离 最后跪在ajax跨域上面了 自己在网上找了个方法 亲试可用 记录一下 写一个类 继承HandlerInterceptorAdapter package com.util;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletRespons
上次给一个网站写网站 前后端分离 最后跪在ajax跨域上面了 自己在网上找了个方法 亲试可用 记录一下 写一个类 继承HandlerInterceptorAdapter package com.util; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; public class CommonInterceptor extends HandlerInterceptorAdapter { public boolean preHandle(HttpServletRequest request,HttpServletResponse response,Object handler) throws Exception { response.setHeader("Access-Control-Allow-Origin","*"); response.setHeader("Access-Control-Allow-Methods","*"); response.setHeader("Access-Control-Max-Age","3600"); response.setHeader("Access-Control-Allow-Headers","Origin,X-Requested-With,Content-Type,Accept"); response.setHeader("Access-Control-Allow-Credentials","true"); // 是否允许浏览器携带用户身份信息(cookie) return true; } } 然后在xml里面配置一下路径 <mvc:interceptors> <!--过滤所有请求,处理跨域请求问题 --> <mvc:interceptor> <mvc:mapping path="/**" /> <bean class="com.util.CommonInterceptor" /> </mvc:interceptor> </mvc:interceptors> 这样就可以了 不过有篇博客说针对简单跨域没问题。但是针对post+json请求却失败,提示跨域失败。所以下面记录一下他的解决方式 建立一个类 继承 OncePerRequestFilter public class CrossFilter extends OncePerRequestFilter { @Override protected void doFilterInternal(HttpServletRequest request,FilterChain filterChain) throws ServletException,IOException { if (request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) { // CORS "pre-flight" request response.addHeader("Access-Control-Allow-Origin","*"); response.addHeader("Access-Control-Allow-Methods","GET,POST,PUT,DELETE"); response.addHeader("Access-Control-Allow-Headers","Content-Type"); response.addHeader("Access-Control-Max-Age","1800");//30 min } filterChain.doFilter(request,response); } } web.xml里面设置一下 <filter> <filter-name>cors</filter-name> <filter-class>cn.***.filter.CrossFilter</filter-class> </filter> <filter-mapping> <filter-name>cors</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 然后就可以了 上述方式为spring3.0版本 如果是4.0版本可以用下面方式(无测) xml里面配置 <mvc:cors> <mvc:mapping path="/**" allowed-origins="*" allow-credentials="true" max-age="1800" allowed-methods="GET,OPTIONS"/> </mvc:cors> PS:使用SpringMVC解决Ajax跨域问题 package com.mengyao.system.filter; import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Component; import org.springframework.web.filter.OncePerRequestFilter; /** * CORSFilter 解决跨域问题 * @author mengyao * */ @Component public class InitCORSFilter extends OncePerRequestFilter { private Logger logger = LoggerFactory.getLogger(InitCORSFilter.class); public InitCORSFilter() { logger.info("==== 初始化系统允许跨域请求 ===="); } /** * 解决跨域:Access-Control-Allow-Origin,值为*表示服务器端允许任意Domain访问请求 */ @Override protected void doFilterInternal(HttpServletRequest request,FilterChain filterChain) throws ServletException,IOException { if (request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) { response.addHeader("Access-Control-Allow-Origin",DELETE,OPTIONS"); response.addHeader("Access-Control-Allow-Headers","origin,content-type,accept,x-requested-with,sid,mycustom,smuser"); response.addHeader("Access-Control-Max-Age",response); } } 好了,代码到此结束! 总结 以上所述是小编给大家介绍的Springmvc ajax跨域请求处理方法实例详解,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对编程小技巧网站的支持! (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |