使用定时任务

Chapter4-1-1/src/main/java/com/didispace/Application.java

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+package com.didispace;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+@SpringBootApplication
+@EnableScheduling
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}

Chapter4-1-1/src/main/java/com/didispace/task/ScheduledTasks.java

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+package com.didispace.task;
+
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+@Component
+public class ScheduledTasks {
+
+    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
+
+    @Scheduled(fixedRate = 5000)
+    public void reportCurrentTime() {
+        System.out.println("现在时间：" + dateFormat.format(new Date()));
+    }
+
+}