OPTIONS请求后台处理
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package com.ucar.filter; import cn.hutool.http.Method; import org.springframework.web.filter.OncePerRequestFilter; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; /** * @author Administrator */ public class CorsFilter extends OncePerRequestFilter { @Override protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException { httpServletResponse.setHeader("Access-Control-Allow-Origin", "*"); httpServletResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE"); httpServletResponse.setHeader("Access-Control-Max-Age", "3600"); httpServletResponse.setHeader("Access-Control-Allow-Headers", "Content-Type, x-requested-with, X-Custom-Header, Request-Ajax");//允许自定义的请求头 if(httpServletRequest.getMethod().toUpperCase().equals(Method.OPTIONS.name())){ return; } filterChain.doFilter(httpServletRequest, httpServletResponse); } }
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