dataStream api

kafka/pom.xml

@@ -32,5 +32,10 @@
             <artifactId>spring-kafka-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.9</version>
+        </dependency>
     </dependencies>
 </project>

kafka/src/main/java/com/duanledexianxianxian/demo/kafka/consumer/TestConsumer.java

@@ -10,7 +10,7 @@ import org.springframework.stereotype.Component;
  * @author fengyuchenglun
  * @version 1.0.0
  */
-@Component
+//@Component
 public class TestConsumer {
 
     /**

kafka/src/main/java/com/duanledexianxianxian/demo/kafka/listener/AppListener.java

@@ -3,6 +3,10 @@ package com.duanledexianxianxian.demo.kafka.listener;
 import com.alibaba.fastjson.JSONObject;
 import com.duanledexianxianxian.demo.kafka.model.Student;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.commons.lang3.RandomUtils;
+import org.apache.commons.lang3.concurrent.BasicThreadFactory;
+import org.apache.tomcat.util.threads.ThreadPoolExecutor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.context.event.ApplicationReadyEvent;
 import org.springframework.context.ApplicationListener;
@@ -11,6 +15,7 @@ import org.springframework.stereotype.Component;
 
 import java.time.LocalDateTime;
 import java.util.Random;
+import java.util.concurrent.*;
 
 /**
  * @author duanledexianxianxian
@@ -23,24 +28,39 @@ public class AppListener implements ApplicationListener<ApplicationReadyEvent> {
     @Autowired
     private KafkaTemplate<String, Object> kafkaTemplate;
 
+
     @Override
     public void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {
-        //labdam方式
-        new Thread(() -> {
-            log.info(Thread.currentThread().getName() + ":使用lambda表达式创建线程");
+
+        ThreadFactory namedThreadFactory = new BasicThreadFactory.Builder().namingPattern("producer-kafka-pool-%d").daemon(true).build();
+
+        ExecutorService pool = new ThreadPoolExecutor(5, 200,
+                0L, TimeUnit.MILLISECONDS,
+                new LinkedBlockingQueue<Runnable>(1024), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());
+        int i = 0;
         while (true) {
-                Student student = new Student();
-                student.setStudentId(String.valueOf(LocalDateTime.now().getNano()));
-                student.setName(Thread.currentThread().getName());
-                student.setAge(String.valueOf(new Random().nextInt()));
-                log.info("Send Data:{}", student);
-                kafkaTemplate.send("topic_first", JSONObject.toJSONString(student));
+            int finalI = i;
+            pool.execute(() -> {
+                this.sendData(finalI);
+                // sleep 5 seconds
+            });
+
             try {
                 Thread.sleep(5000);
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }
+            i++;
+        }
     }
-        }).start();
+
+    private void sendData(int i) {
+        Student student = new Student();
+        student.setStudentId("duanledexianxianxian" + i);
+        student.setName(RandomStringUtils.randomAlphabetic(10));
+        student.setAge(new Random().nextInt(19) + 6);
+        student.setSex(Byte.valueOf(String.valueOf((new Random().nextInt(2)))));
+        log.info("Thread:{}  Send Data:{}", Thread.currentThread().getName(), student);
+        kafkaTemplate.send("topic_first", JSONObject.toJSONString(student));
     }
 }

kafka/src/main/java/com/duanledexianxianxian/demo/kafka/model/Student.java

@@ -14,7 +14,22 @@ import java.io.Serializable;
 @Data
 public class Student implements Serializable {
     private static final long serialVersionUID = -4572819276161640638L;
+    /**
+     * 学生学号
+     */
     private String studentId;
+    /**
+     * 学生姓名
+     */
     private String name;
-    private String age;
+    /**
+     * 学生年龄
+     */
+    private Integer age;
+    /**
+     * 学生性别
+     * 0-男
+     * 1-女
+     */
+    private Byte sex;
 }