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need:

Printing logs is often required in business. Traditional code plus logs are too invasive to the code. Adding, deleting or modifying logs will change the code. Even if annotations are used, annotations need to be added. It is difficult to achieve zero-invasive code addition.

Solution

gateway custom filter.
Prerequisite: gateway has been used in the project.

code

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Component
@Slf4j
public class MyGlobalFilter implements GlobalFilter, Ordered
{

    /**
     * 数字越小优先级越高
     * @return
     */
    @Override
    public int getOrder()
    {
        return 0;
    }

    private static final String BEGIN_VISIT_TIME = "begin_visit_time";//开始访问时间
    /**
     *第2版，各种统计
     * @param exchange
     * @param chain
     * @return
     */
    @Override
    public Mono
                                   

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