springboot 解决跨域问题

最新推荐文章于 2024-04-17 08:52:12 发布

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本文介绍了一个简单的SpringBoot过滤器实现，通过继承Filter并设置响应头来解决跨域问题，确保前后端分离项目的顺利运行。

只需要在springboot 下一个类继承Filter，集齐百家之长，也不好意思标原创了，方便下次直接用。切记这@Component不能少，要不这过滤器就不起作用了。

具体还可以看下https://blog.youkuaiyun.com/achang07/article/details/79282789

import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class CrudFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response1= (HttpServletResponse) response;
        // 设置服务器允许浏览器发送请求都携带cookie,axios跨越必备
        response1.setHeader("Access-Control-Allow-Credentials","true");
        response1.setHeader("Access-Control-Allow-Origin", "*");//跨越来源的IP
        response1.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE,PUT");
        response1.setHeader("Access-Control-Max-Age", "3600");
        response1.setHeader("Access-Control-Allow-Headers", "x-requested-with,Content-Type, Accept,mid,X-Token,x-www-form-urlencoded");
        chain.doFilter(request,response);
    }

    @Override
    public void destroy() {

    }
}