Springmvc ajax跨域请求处理方法实例详解

2023-09-23 04:46:06 138

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

packagecom.util;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
importorg.springframework.web.servlet.handler.HandlerInterceptorAdapter;
publicclassCommonInterceptorextendsHandlerInterceptorAdapter{
publicbooleanpreHandle(HttpServletRequestrequest,
HttpServletResponseresponse,Objecthandler)throwsException{
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）
returntrue;
}
}

然后在xml里面配置一下路径

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

publicclassCrossFilterextendsOncePerRequestFilter{
@Override
protectedvoiddoFilterInternal(HttpServletRequestrequest,HttpServletResponseresponse,FilterChainfilterChain)throwsServletException,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");//30min
}
filterChain.doFilter(request,response);
}
}

web.xml里面设置一下


cors
cn.***.filter.CrossFilter


cors
/*

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

PS：使用SpringMVC解决Ajax跨域问题

packagecom.mengyao.system.filter;
importjava.io.IOException;
importjavax.servlet.FilterChain;
importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
importorg.slf4j.Logger;
importorg.slf4j.LoggerFactory;
importorg.springframework.stereotype.Component;
importorg.springframework.web.filter.OncePerRequestFilter;
/**
*CORSFilter解决跨域问题
*@authormengyao
*
*/
@Component
publicclassInitCORSFilterextendsOncePerRequestFilter{
privateLoggerlogger=LoggerFactory.getLogger(InitCORSFilter.class);
publicInitCORSFilter(){
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
protectedvoiddoFilterInternal(HttpServletRequestrequest,HttpServletResponseresponse,FilterChainfilterChain)
throwsServletException,IOException{
if(request.getHeader("Access-Control-Request-Method")!=null&&"OPTIONS".equals(request.getMethod())){
response.addHeader("Access-Control-Allow-Origin","*");
response.addHeader("Access-Control-Allow-Methods","GET,POST,PUT,DELETE,OPTIONS");
response.addHeader("Access-Control-Allow-Headers","origin,content-type,accept,x-requested-with,sid,mycustom,smuser");
response.addHeader("Access-Control-Max-Age","1800");//30min
}
filterChain.doFilter(request,response);
}
}

好了，代码到此结束！

总结

以上所述是小编给大家介绍的Springmvcajax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毛票票网站的支持！

Springmvc ajax跨域请求处理方法实例详解

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