【SpringBoot】解决前后端分离的跨域‘Access-Control-Allow-Origin‘ header in the response must not be the wildcard

index.html#/index:1 Access to XMLHttpRequest at ‘http://127.0.0.1:8083/product/list?pageSize=20’ from origin ‘http://localhost:8083’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: The value of the ‘Access-Control-Allow-Origin’ header in the response must not be the wildcard ‘*’ when the request’s credentials mode is ‘include’. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

效果图

过滤器

package com.bennyrhys.mall.filter;

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

/**
 * 处理跨域的过滤器
 */
public class CrosFilter implements javax.servlet.Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
 
    }
 
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse res = (HttpServletResponse) servletResponse;
        //*号表示对所有请求都允许跨域访问
        res.addHeader("Access-Control-Allow-Origin", "*");
//        res.addHeader("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
//        res.addHeader("Access-Control-Allow-Credentials", "true");
        filterChain.doFilter(servletRequest, servletResponse);
    }
 
    @Override
    public void destroy() {
 
    }
}

启动类

    /**
     * 配置跨域访问的过滤器
     * @return
     */
    @Bean
    public FilterRegistrationBean registerFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.addUrlPatterns("/*");
        bean.setFilter(new CrosFilter());
        return bean;
    }

注意：往往是访问的localhost ！= 127.0.0.1导致的跨域不一致