자바 Async3

package com.example.async.test.controller;

import com.example.async.test.service.TestService;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {
    private final TestService testService;

    public TestController(TestService testService){
        this.testService = testService;
    }

    @GetMapping(value = "/test",  produces = {MediaType.APPLICATION_JSON_VALUE})
    public void test() {
        for(int i = 0; i < 1000; i++) {
            //testService.asyncPrint(i);
            testService.asyncPrint4(i);
        }
    }
}

 

package com.example.async.test.service;

import lombok.Synchronized;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;

@Service
public class TestService {
    private final Executor executor;

    @Autowired
    public TestService(@Qualifier("asyncThreadTaskExecutor") Executor executor) {
        this.executor = executor;
    }

    @Async
    public void asyncPrint(int value) {
        //System.out.println("value : " + value);
        asyncPrint2(value);
        //asyncPrint3(value);
    }

    private void asyncPrint2(int value) {
        System.out.println("value : " + value);
    }

    public void asyncPrint3(int value) {
        System.out.println("value : " + value);
    }

    public void asyncPrint4(int value) {
        CompletableFuture.runAsync(()-> asyncPrint2(value),executor);
    }
}