【Java】Java 解决跨域问题

最新推荐文章于 2025-09-06 09:33:29 发布

转载最新推荐文章于 2025-09-06 09:33:29 发布 · 83 阅读

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原文链接：https://my.oschina.net/whitejavadog/blog/1925835

文章标签：

#java #python #web.xml

本文介绍了一种通过Java Servlet实现的跨源资源共享(CORS)过滤器。该过滤器能够为HTTP响应添加必要的CORS头部信息，允许来自任意域名的请求，并支持多种HTTP方法。文章还提供了web.xml中配置此过滤器的方法。

2019独角兽企业重金招聘Python工程师标准>>>

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.httpclient.HttpStatus;

/**

* Created by WangShuai on 2016/7/30.

*/

public class CorsFilter implements Filter {

	@Override

	public void init(FilterConfig filterConfig) throws ServletException { }

	@Override

	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) 		throws IOException, ServletException {

		HttpServletResponse response = (HttpServletResponse) servletResponse;

		HttpServletRequest request = (HttpServletRequest) servletRequest;

		// 指定允许其他域名访问

		response.setHeader("Access-Control-Allow-Origin", "*");

		// 响应类型

		response.setHeader("Access-Control-Allow-Methods", "POST, GET, DELETE, OPTIONS, DELETE");

		// 响应头设置

	response.setHeader("Access-Control-Allow-Headers", "Content-Type, x-requested-with, X-Custom-Header, HaiYi-Access-Token");

	if ("OPTIONS".equals(request.getMethod())){

		response.setStatus(HttpStatus.SC_NO_CONTENT);

	}

	filterChain.doFilter(servletRequest, servletResponse);

	}

	@Override

	public void destroy() { }

	}

 

 

web.xml 代码如下配置

<filter>

	<filter-name>cors</filter-name>

	<filter-class>com.hy.fliter.CorsFilter</filter-class>

</filter>

<filter-mapping>

	<filter-name>cors</filter-name>

	<url-pattern>/*</url-pattern>

</filter-mapping>

转载于:https://my.oschina.net/whitejavadog/blog/1925835