Spring Cloud DataFlow -无法转换来自Kafka的消息
Spring Cloud DataFlow -无法转换来自Kafka的消息
提问于 2017-07-17 14:54:54
使用Spring Cloud DataFlow 1.2.2版本，配置如下：
spring.cloud.dataflow.applicationProperties.stream.spring.cloud.stream.binders.kafka1.type=kafka
spring.cloud.dataflow.applicationProperties.stream.spring.cloud.stream.binders.kafka1.environment.spring.cloud.stream.kafka.binder.brokers=<MY_BROKER>
spring.cloud.dataflow.applicationProperties.stream.spring.cloud.stream.binders.kafka1.environment.spring.cloud.stream.kafka.binder.zkNodes=<MY_ZK>我正在尝试创建一个从特定主题读取的流，并将其刷新到长接收器中，如下所示：
stream create --name metricsStream --definition ":metrics --spring.cloud.stream.bindings.input.binder=kafka1 --spring.cloud.stream.bindings.output.content-type='text/plain;charset=UTF-8' > bridge | log" --deploy查看日志文件，我可以看到以下错误：
2017-07-17 09:44:01,700 INFO -kafka-listener-1 log-sink:202 - [B@79d0a6b6 2017-07-17 09:44:01,700 ERROR -kafka-listener-1 o.s.c.s.b.k.KafkaMessageChannelBinder:283 - Could not convert message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java.lang.StringIndexOutOfBoundsException: String index out of range: 380我还尝试为kafka源代码的消费者/生产者配置一些属性
stream create --name metricsStream --definition ":metrics --spring.kafka.consumer.valueDerserializer=org.apache.kafka.common.serialization.StringDeserializer --spring.cloud.stream.bindings.input.binder=kafka1 --spring.cloud.stream.bindings.output.content-type='text/plain;charset=UTF-8' --spring.cloud.stream.bindings.input.consumer.headerMode=raw --spring.cloud.stream.bindings.output.producer.headerMode=raw --outputType='text/plain;charset=UTF-8' > bridge | log" --deploy但我得到的结果是一样的
下面是Spring DataFlow打印的消费者详细信息：
2017-07-17 09:43:57,267 INFO main o.a.k.c.c.ConsumerConfig:180 - ConsumerConfig values: auto.commit.interval.ms = 100 auto.offset.reset = earliest bootstrap.servers = [172.26.1.63:9092] check.crcs = true client.id = consumer-2 connections.max.idle.ms = 540000 enable.auto.commit = false exclude.internal.topics = true fetch.max.bytes = 52428800 fetch.max.wait.ms = 500 fetch.min.bytes
= 1 group.id = metrics_KafkaToHdfs_5 heartbeat.interval.ms = 3000 interceptor.classes = null key.deserializer = class org.apache.kafka.common.serialization.ByteArrayDeserializer max.partition.fetch.bytes = 1048576 max.poll.interval.ms = 300000 max.poll.records = 500 metadata.max.age.ms = 300000 metric.reporters = [] metrics.num.samples = 2 metrics.sample.window.ms = 30000 partition.assignment.strategy = [class org.apache.kafka.clients.consumer.RangeAssignor] receive.buffer.bytes = 65536 reconnect.backoff.ms = 50 request.timeout.ms = 305000 retry.backoff.ms = 100 sasl.kerberos.kinit.cmd = /usr/bin/kinit sasl.kerberos.min.time.before.relogin = 60000 sasl.kerberos.service.name = null sasl.kerberos.ticket.renew.jitter
= 0.05 sasl.kerberos.ticket.renew.window.factor = 0.8 sasl.mechanism = GSSAPI security.protocol = PLAINTEXT send.buffer.bytes = 131072 session.timeout.ms = 10000 ssl.cipher.suites = null ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1] ssl.endpoint.identification.algorithm = null ssl.key.password = null ssl.keymanager.algorithm = SunX509 ssl.keystore.location = null ssl.keystore.password = null ssl.keystore.type = JKS ssl.protocol = TLS ssl.provider = null ssl.secure.random.implementation = null ssl.trustmanager.algorithm = PKIX ssl.truststore.location = null ssl.truststore.password = null ssl.truststore.type = JKS value.deserializer = class org.apache.kafka.common.serialization.ByteArrayDeserializer我看到了类似的问题，但没有有效的答案what is the property to accept binary json message in spring-cloud-stream kafka binder
我的Kafka的指标主题包含JSON行。我应该如何配置Spring才能以DataFlow格式(或者至少是类似于JSON的字符串格式？
回答 1
Stack Overflow用户
回答已采纳
发布于 2017-07-17 15:09:10
您是否尝试过配置输入内容类型？
spring.cloud.stream.bindings.input.content-type=application/json
或者使用Spring Cloud Dataflow中的前缀：
spring.cloud.dataflow.applicationProperties.stream.spring.cloud.stream.binders.kafka1.environment.spring.cloud.stream.bindings.input.content-type=application/json页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/45137749
复制相关文章
相似问题
腾讯云开发者
Copyright © 2013 - 2026 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有
深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 
粤公网安备44030502008569号
腾讯云计算（北京）有限责任公司 京ICP证150476号 | 京ICP备11018762号