java 前后端分离跨域问题

最新推荐文章于 2025-09-14 15:45:30 发布

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本文介绍了一种使用Java实现跨域请求的方法，通过自定义的`AccessFilter`过滤器来设置HTTP响应头，允许任意来源的跨域请求，并配置了常见的跨域请求方法和头部信息。

java跨域实现类

package com.sq.filter;
import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
public class AccessFilter extends HttpServlet implements Filter {
private static final long serialVersionUID = 1L;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletResponse httpResponse = (HttpServletResponse) response;
httpResponse.setHeader("Access-Control-Allow-Origin", "*");
httpResponse.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
httpResponse.setHeader("Access-Control-Max-Age", "1800");
httpResponse.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
httpResponse.setHeader("Access-Control-Allow-Credentials", "true");
chain.doFilter(request, httpResponse);
}
}