调通了

src/main/java/com/qniao/iot/rc/KafkaMessage.java

@@ -6,5 +6,13 @@ import lombok.Data;
 public class KafkaMessage {
     private String key;
 
-    private String value;
+    private Integer value;
+
+    @Override
+    public String toString() {
+        return "KafkaMessage{" +
+                "key='" + key + '\'' +
+                ", value='" + value + '\'' +
+                '}';
+    }
 }

src/main/java/com/qniao/iot/rc/KafkaMessageSchema.java

@@ -19,6 +19,6 @@ public class KafkaMessageSchema implements DeserializationSchema<KafkaMessage> {
 
     @Override
     public TypeInformation<KafkaMessage> getProducedType() {
-        return null;
+        return TypeInformation.of(KafkaMessage.class);
     }
 }

src/main/java/com/qniao/iot/rc/Person.java

@@ -1,16 +0,0 @@
-package com.qniao.iot.rc;
-
-import lombok.AllArgsConstructor;
-import lombok.Data;
-
-@Data
-@AllArgsConstructor
-public class Person {
-    private String name;
-
-    private int age;
-
-    public String toString() {
-        return getClass().getName() + "@ " + "name=" + this.name + "age=" + age;
-    }
-}

src/main/java/com/qniao/iot/rc/RootCloudIotDataFormatterJob.java

@@ -18,46 +18,35 @@
 
 package com.qniao.iot.rc;
 
-import org.apache.flink.api.common.functions.FilterFunction;
+import org.apache.flink.api.common.eventtime.WatermarkStrategy;
+import org.apache.flink.connector.kafka.source.KafkaSource;
+import org.apache.flink.connector.kafka.source.enumerator.initializer.OffsetsInitializer;
 import org.apache.flink.streaming.api.datastream.DataStream;
 import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.apache.flink.streaming.api.functions.sink.PrintSinkFunction;
 
 /**
  * 根云数据格式化作业
  */
 public class RootCloudIotDataFormatterJob {
-    private static final Logger LOGGER = LoggerFactory.getLogger(RootCloudIotDataFormatterJob.class);
+    //private static final Logger LOGGER = LoggerFactory.getLogger(RootCloudIotDataFormatterJob.class);
 
     public static void main(String[] args) throws Exception {
-//        // 创建执行环境
-//        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
-//
-//        KafkaSource<KafkaMessage> source = KafkaSource.<KafkaMessage>builder()
-//                .setBootstrapServers("localhost:9092")
-//                .setTopics("test_topic")
-//                .setGroupId("flink-kafka-demo")
-//                .setStartingOffsets(OffsetsInitializer.earliest())
-//                .setValueOnlyDeserializer(new KafkaMessageSchema())
-//                .build();
-//
-//        DataStream<KafkaMessage> dc = env.fromSource(source, WatermarkStrategy.noWatermarks(), "My Kafka Source");
-//        //env.fromSource(source, WatermarkStrategy.noWatermarks(), "Kafka Source");
-//
-//        env.execute("Kafka Job");
-
-//        final StreamExecutionEnvironment env =
-//                StreamExecutionEnvironment.getExecutionEnvironment();
-//        DataStream<Person> flintstones = env.fromElements(
-//                new Person("Fred", 35),
-//                new Person("Wilma", 35),
-//                new Person("Pebbles", 2));
-//        DataStream<Person> adults = flintstones.filter((FilterFunction<Person>) person -> person.getAge() >= 18);
-//        LOGGER.info("===================>>> before print");
-//        adults.print();
-//        LOGGER.info("===================>>> before execute");
-//        env.execute("Peron Job");
-//        LOGGER.info("===================>>> after print");
+        // 创建执行环境
+        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
+
+        KafkaSource<KafkaMessage> source = KafkaSource.<KafkaMessage>builder()
+                .setBootstrapServers("localhost:9092")
+                .setTopics("test_topic")
+                .setGroupId("flink-kafka-demo")
+                .setStartingOffsets(OffsetsInitializer.latest())
+                .setValueOnlyDeserializer(new KafkaMessageSchema())
+                .build();
+
+        DataStream<KafkaMessage> ds = env.fromSource(source, WatermarkStrategy.noWatermarks(), "My Kafka Source");
+
+        ds.addSink(new PrintSinkFunction<>());
+
+        env.execute("Kafka Job");
     }
 }

src/main/resources/log4j2.properties

@@ -18,7 +18,6 @@
 
 rootLogger.level = INFO
 rootLogger.appenderRef.console.ref = ConsoleAppender
-rootLogger.appenderRef.file.ref = MainAppender
 
 appender.console.name = ConsoleAppender
 appender.console.type = CONSOLE