feat(新增): 🚀 NettyFuture同步和异步方式获取消息

netty/service/src/main/java/cn/bunny/service/netty/demo4/JdkFuture.java

@@ -0,0 +1,25 @@
+package cn.bunny.service.netty.demo4;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.*;
+
+@Slf4j
+public class JdkFuture {
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
+        // 线程池
+        ExecutorService service = Executors.newFixedThreadPool(2);
+        // 提交任务
+        Future<Integer> future = service.submit(new Callable<Integer>() {
+            @Override
+            public Integer call() throws Exception {
+                log.debug("执行计算");
+                Thread.sleep(1000);
+                return 50;
+            }
+        });
+
+        log.debug("等待结果");
+        log.debug("结果是 {}", future.get());
+    }
+}

netty/service/src/main/java/cn/bunny/service/netty/demo4/NettyFuture.java

@@ -0,0 +1,39 @@
+package cn.bunny.service.netty.demo4;
+
+import io.netty.channel.EventLoop;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.util.concurrent.Future;
+import io.netty.util.concurrent.GenericFutureListener;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+
+@Slf4j
+public class NettyFuture {
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
+        NioEventLoopGroup group = new NioEventLoopGroup();
+        EventLoop eventLoop = group.next();
+
+        Future<Integer> future = eventLoop.submit(new Callable<Integer>() {
+            @Override
+            public Integer call() throws Exception {
+                log.debug("执行计算");
+                Thread.sleep(1000);
+                return 70;
+            }
+        });
+
+        // 同步方式等待结果
+        log.debug("等待结果。。。");
+        log.debug("结果是：{}", future.get());
+
+        // 异步方式接受结果
+        future.addListener(new GenericFutureListener<Future<? super Integer>>() {
+            @Override
+            public void operationComplete(Future<? super Integer> future) throws Exception {
+                log.debug("接受结果：{}", future.getNow());
+            }
+        });
+    }
+}