hazelcast 分布式工具

binlog undo log redo log理解
https://juejin.cn/post/7103539389644406798

mvnDebug clean install 编译器调试
远程连接debug

更换openwrt 镜像源为清华的
sed -i ‘s_downloads.openwrt.org_mirrors.tuna.tsinghua.edu.cn/openwrt_’ /etc/opkg/distfeeds.conf

spring preflight 401 403跨域

package org.jeecg;

import org.apache.http.HttpStatus;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Configuration
public class CorsFilterConfig {
    @Bean
    public FilterRegistrationBean<Filter> corsFilter() {
        FilterRegistrationBean<Filter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter((servletRequest, servletResponse, filterChain) -> {
            HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
            HttpServletResponse response = (HttpServletResponse) servletResponse;
            //指定允许其他域名访问
            response.setHeader("Access-Control-Allow-Origin", "*");
            response.setHeader("Access-Control-Allow-Credentials", "true");
            response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, PATCH, DELETE, OPTIONS");
            response.setHeader("Access-Control-Max-Age", "86400");
            response.setHeader("Access-Control-Allow-Headers", "*");
            if ("OPTIONS".equals(httpServletRequest.getMethod())) {
                response.setStatus(HttpStatus.SC_OK);
            }
            filterChain.doFilter(servletRequest, servletResponse);
        });
        //过滤器名称
        registrationBean.setName("corsFilter");
        //拦截规则
        registrationBean.addUrlPatterns("/*");
        //过滤器顺序
        registrationBean.setOrder(FilterRegistrationBean.HIGHEST_PRECEDENCE);
        return registrationBean;
    }
}

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