优化Kafka认证方式，删除配置项通过连接端口判断

src/main/java/com/zdjizhi/utils/kafka/KafkaConsumer.java

@@ -0,0 +1,42 @@
+package com.zdjizhi.utils.kafka;
+
+import com.zdjizhi.common.StreamAggregateConfig;
+import org.apache.flink.api.common.serialization.SimpleStringSchema;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.common.config.SslConfigs;
+
+import java.util.Properties;
+
+/**
+ * @author qidaijie
+ * @Package com.zdjizhi.utils.kafka
+ * @Description:
+ * @date 2021/6/813:54
+ */
+public class KafkaConsumer {
+    private static Properties createConsumerConfig() {
+        Properties properties = new Properties();
+        properties.put("bootstrap.servers", StreamAggregateConfig.SOURCE_KAFKA_SERVERS);
+        properties.put("group.id", StreamAggregateConfig.GROUP_ID);
+        properties.put("session.timeout.ms", StreamAggregateConfig.SESSION_TIMEOUT_MS);
+        properties.put("max.poll.records", StreamAggregateConfig.MAX_POLL_RECORDS);
+        properties.put("max.partition.fetch.bytes", StreamAggregateConfig.MAX_PARTITION_FETCH_BYTES);
+        properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
+        properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
+
+        CertUtils.chooseCert(StreamAggregateConfig.SOURCE_KAFKA_SERVERS, properties);
+
+        return properties;
+    }
+
+    public static FlinkKafkaConsumer<String> getKafkaConsumer() {
+        FlinkKafkaConsumer<String> kafkaConsumer = new FlinkKafkaConsumer<>(StreamAggregateConfig.SOURCE_KAFKA_TOPIC,
+                new SimpleStringSchema(), createConsumerConfig());
+
+        kafkaConsumer.setCommitOffsetsOnCheckpoints(true);
+        kafkaConsumer.setStartFromGroupOffsets();
+
+        return kafkaConsumer;
+    }
+}