Question

使用具有以下配置的Spring Cloud DataFlow版本1.2.2：

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将从特定主题读取并将其刷新到长接收器中的流，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

我还试图为kafka源的消费者/制作者配置一些属性

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

但我得到了相同的结果

以下是由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

我看到了类似的排名，但没有有效答案 what is the property to accept binary json message in spring-cloud-stream kafka binder

我的Kafka指标主题包含JSON行。我应该如何配置Spring DataFlow以能够以JSON格式读取Kafka的主题（或者至少是看起来像JSON的String格式？

Answer 1

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的前缀：

spring.cloud.dataflow.applicationProperties.stream.spring.cloud.stream.binders.kafka1.environment.spring.cloud.stream.bindings.input.content-type=application/json

Spring Cloud DataFlow - 无法转换来自Kafka的消息

1 个答案: