Java服务端设置CORS跨越请求，Ajax跨越请求服务器设置

最新推荐文章于 2024-07-04 03:48:47 发布

clk863399393

最新推荐文章于 2024-07-04 03:48:47 发布

阅读量1.9k

点赞数

CC 4.0 BY-SA版权

分类专栏： ajax跨域文章标签： ajax

本文链接：https://blog.youkuaiyun.com/clk863399393/article/details/78421229

ajax跨域专栏收录该内容

1 篇文章

订阅专栏

本文介绍如何在Java服务端设置CORS，以允许Ajax进行跨域请求。通过修改web.xml和添加相应的Java代码，可以实现从一个网站向另一个网站发起Ajax请求。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

所谓ajax跨域就是从百度的网站ajax访问360的网站
一般需要服务端设置代码即可

代码：

web.xml

<!--允许跨域访问-->
<filter>
    <filter-name>CrossOriginControl</filter-name>
    <filter-class>com.clk.filter.CrossOriginControl</filter-class>
    <init-param>
        <param-name>IsCross</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>CrossOriginControl</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

java代码

public class CrossOriginControl implements Filter {
    private boolean isCross = false;

    public CrossOriginControl() {
    }

    public void init(FilterConfig filterConfig) throws ServletException {
        String isCrossStr = filterConfig.getInitParameter("IsCross");
        this.isCross = isCrossStr.equals("true");
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        if (this.isCross) {
            HttpServletResponse httpServletResponse = (HttpServletResponse)response;
            httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");
            httpServletResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
            httpServletResponse.setHeader("Access-Control-Max-Age", "0");
            httpServletResponse.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");
            httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");
            httpServletResponse.setHeader("XDomainRequestAllowed", "1");
        }

        chain.doFilter(request, response);
    }

    public void destroy() {
    }
}