Example of Spring Bean in a Request Scope

DemoApplication.java

package com.example.demo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.WebApplicationContext;

import javax.servlet.http.HttpServletRequest;
import java.util.Collections;
import java.util.Map;
import java.util.Random;
import java.util.stream.Collectors;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

@RestController
class FeiController {

    @Autowired
    private FeiBean feiBean;

    @GetMapping("/")
    public void getFei() {
        System.out.println(feiBean);
    }
}

@Configuration
class FeiConfig {

    @Bean
    @Scope(value = WebApplicationContext.SCOPE_REQUEST, proxyMode = ScopedProxyMode.TARGET_CLASS)
    public FeiBean feiBean(@Autowired HttpServletRequest request) {

        final Map<String, String> headers = Collections.list(request.getHeaderNames()).stream()
                .collect(Collectors.toMap(headerName -> headerName, request::getHeader));

        final String name = "fei-" + new Random().ints(1).findAny().getAsInt();

        return new FeiBean(name, headers);
    }
    
}

@Data
@AllArgsConstructor
@NoArgsConstructor
class FeiBean {
    private String name;
    private Map<String, String> headers;
}

hello