Springboot中@Async异步,实现异步结果合并统一返回方式

    @Override
    public SysUser getUserA() throws InterruptedException {
        System.out.println("A线程："+Thread.currentThread().getId());
        SysUser sysUser = new SysUser();
        sysUser.setUserName("A用户");
        Thread.sleep(2000L);
        System.out.println("A 拉取成功");
        return sysUser;
    }
    @Override
    public SysUser getUserB() throws InterruptedException {
        System.out.println("B线程："+Thread.currentThread().getId());
        SysUser sysUser = new SysUser();
        sysUser.setUserName("B用户");
        Thread.sleep(2000L);
        System.out.println("B 拉取成功");
        return sysUser;
    }
    @Override
    public SysUser getUserC() throws InterruptedException {
        System.out.println("C线程："+Thread.currentThread().getId());
        SysUser sysUser = new SysUser();
        sysUser.setUserName("C用户");
        Thread.sleep(2000L);
        System.out.println("C 拉取成功");
        return sysUser;
    }

    @Test
    public void testAsync() throws Exception{
        System.out.println(new Date());
        SysUser a = sysUserService.getUserA();
        SysUser b = sysUserService.getUserB();
        SysUser c = sysUserService.getUserC();
        List<SysUser> list = new ArrayList<>(Arrays.asList(a,b,c));
        list.forEach(user->{
            System.out.println(user.getUserName());
        });
        System.out.println(new Date());
    }

CompletableFuture.allOf(a,b,c).join();