使用KSTREAM或KSQL将JSON数组转换为JSON对象

import org.apache.kafka.streams.KafkaStreams;
import org.apache.kafka.streams.StreamsBuilder;
import org.apache.kafka.streams.kstream.KStream;

public class JsonArrayToObjectConverter {
    public static void main(String[] args) {
        StreamsBuilder builder = new StreamsBuilder();

        // 创建输入流
        KStream<String, String> inputStream = builder.stream("input-topic");

        // 对每个JSON数组进行处理，转换为JSON对象
        KStream<String, String> outputStream = inputStream.mapValues(JsonArrayToObjectConverter::convertToJson);

        // 将转换后的JSON对象写入输出流
        outputStream.to("output-topic");

        KafkaStreams streams = new KafkaStreams(builder.build(), getProperties());
        streams.start();
    }

    private static String convertToJson(String jsonArray) {
        // 在这里编写将JSON数组转换为JSON对象的代码逻辑
        // 返回转换后的JSON对象字符串
    }

    private static Properties getProperties() {
        // 返回配置Kafka流处理应用的属性的Properties对象
    }
}

CREATE STREAM output_stream AS
SELECT CONVERT_JSON_ARRAY_TO_OBJECT(json_array) AS json_object
FROM input_stream;