解决子线程中获取不到HttpServletRequest对象的问题

package cn.edu.sgu.www.mhxysy.util;
 
import cn.edu.sgu.www.mhxysy.consts.MimeType;
import cn.edu.sgu.www.mhxysy.exception.GlobalException;
import cn.edu.sgu.www.mhxysy.restful.JsonResult;
import cn.edu.sgu.www.mhxysy.restful.ResponseCode;
import com.alibaba.fastjson.JSON;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
 
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
 
/**
 * http工具类
 * @author heyunlin
 * @version 1.0
 */
public class HttpUtils {
 
    /**
     * 获取HttpServletRequest对象
     * @return HttpServletRequest
     */
    public static HttpServletRequest getRequest() {
        RequestAttributes attributes = RequestContextHolder.getRequestAttributes();
 
        if (attributes != null ) {
            return ((ServletRequestAttributes) attributes).getRequest();
        }
 
        throw new GlobalException(ResponseCode.ERROR, "获取request对象失败");
    }
 
}

public abstract class RequestContextHolder  {    
    private static final ThreadLocal<RequestAttributes> requestAttributesHolder =
			new NamedThreadLocal<>("Request attributes");
 
	private static final ThreadLocal<RequestAttributes> inheritableRequestAttributesHolder =
			new NamedInheritableThreadLocal<>("Request context");
 
	/**
	 * 根据inheritable的值决定通过ThreadLocal或InhertitableThreadLocal保存RequestAttributes对象 
	 */
	public static void setRequestAttributes(@Nullable RequestAttributes attributes, boolean inheritable) {
		if (attributes == null) {
			resetRequestAttributes();
		} else {
			if (inheritable) {
				inheritableRequestAttributesHolder.set(attributes);
 
				requestAttributesHolder.remove();
			} else {
				requestAttributesHolder.set(attributes);
 
				inheritableRequestAttributesHolder.remove();
			}
		}
	}
 
    /**
	 * 通过Ctrl+鼠标点击，发现实际调用的是这个方法
     * 所以默认是通过ThreadLocal保存的变量
	 */
    public static void setRequestAttributes(@Nullable RequestAttributes attributes) {
		setRequestAttributes(attributes, false);
	}
 
    /**
	 * 获取ThreadLocal中设置的RequestAttributes对象 
	 */
	@Nullable
	public static RequestAttributes getRequestAttributes() {
        // 因为默认是通过ThreadLocal而不是InheritableThreadLocal保存，
        // 在子线程访问不到在父线程中通过set()方法设置的变量
		RequestAttributes attributes = requestAttributesHolder.get();
 
        // 所以在子线程中，会走这个分支
		if (attributes == null) {
            // 然后从InheritableThreadLocal中获取RequestAttributes对象
            // 因为调用上面第一个setRequestAttributes(RequestAttributes, boolean)方法时传的参数是false，所以InheritableThreadLocal中没有设置RequestAttributes对象，因此，这里get()还是null，最后attributes的值为null
			attributes = inheritableRequestAttributesHolder.get();
		}
 
		return attributes;
	}
 
}

package cn.edu.sgu.www.mhxysy.chain.login.impl;
 
import cn.edu.sgu.www.mhxysy.chain.login.UserLoginHandler;
import cn.edu.sgu.www.mhxysy.config.property.EmailProperties;
import cn.edu.sgu.www.mhxysy.config.property.SystemSettingsProperties;
import cn.edu.sgu.www.mhxysy.entity.location.Location;
import cn.edu.sgu.www.mhxysy.util.EmailUtils;
import cn.edu.sgu.www.mhxysy.util.IpUtils;
import cn.edu.sgu.www.mhxysy.util.LocationUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
 
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Component
public class EmailSendHandler implements UserLoginHandler {
 
    private Object params;
    private UserLoginHandler next;
 
    private final EmailUtils emailUtils;
    private final EmailProperties emailProperties;
    private final SystemSettingsProperties systemSettingsProperties;
 
    @Autowired
    public EmailSendHandler(
            EmailUtils emailUtils,
            EmailProperties emailProperties,
            SystemSettingsProperties systemSettingsProperties) {
        this.emailUtils = emailUtils;
        this.emailProperties = emailProperties;
        this.systemSettingsProperties = systemSettingsProperties;
    }
 
    @Override
    public void handle() {
        if (emailProperties.isEnable()) {
            String ip = IpUtils.getIp();
            String username = (String) params;
            String zoneId = systemSettingsProperties.getZoneId();
            // 定义日期格式
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH:mm:ss");
 
            new Thread(() -> {
                try {
                    String address = "广东广州";
                    Location location = LocationUtils.getLocation(ip);
 
                    if (systemSettingsProperties.isUseRealLocation()) {
                        String locationAddress = location.getAddress();
 
                        if (locationAddress != null) {
                            address = locationAddress;
                        }
                    }
 
                    String text = "您的账号" + username + "在" + address + "登录了。" +
                            "[" + LocalDateTime.now(ZoneId.of(zoneId)).format(formatter) + "]";
 
                    emailUtils.sendMessage(text);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }).start();
        }
 
        if (next != null) {
            next.handle();
        }
    }
 
    @Override
    public void setNext(UserLoginHandler next) {
        this.next = next;
    }
 
    @Override
    public void setParams(Object params) {
        this.params = params;
    }
 
}