被监听对象是SysUserDto

package com.richfit.richfit.bootConfig.ListenerEvent;
import org.springframework.context.ApplicationEvent;
/**
 * 此类作为监听对象，监听登录用户  与方法queryZhuce在一块
 */
public class SysUserDto extends ApplicationEvent {
    private String userName;
    private String password;
    public SysUserDto(Object source, String userName, String password) {
        super(source);
        this.userName = userName;
        this.password = password;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
}

利用applicationContext.publishEvent 发布消息

@GetMapping("/queryZhuce")
    public List queryZhuce(@RequestParam(name = "username",required = false)String username,
                                      @RequestParam(name = "pass",required = false)String pass,
                                      HttpServletRequest request){
        //用于监听登录用户
        applicationContext.publishEvent(new SysUserDto(this,username,pass));
        return xqyService.queryZhuce(username,pass,request);
    }

用于接收发布的消息

package com.richfit.richfit.bootConfig.ListenerEvent;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.EventListener;
/**
 * 接收被监听的对象
 */
@Configuration
public class CaiwuLIstenerEvent {
    @EventListener(SysUserDto.class)
    public void handle(SysUserDto sysUserDto){
        System.out.println("监听到的登录用户是:"+ sysUserDto.getUserName());
    }
}

以此可以实现对登录名的监听，从而实现某些需求