Apache Camel：FTP批处理使用者不打印文件批处理索引和文件批处理大小

Question

I am developing a route to download files from a FTP location batch-wise. Please find below my route -

**from("ftp://user@ftphost/inbox?password=XXXX&binary=true&recursive=true")
            .log("Batch Index = ${header.CamelFileBatchIndex}, Batch Size = ${header.CamelFileBatchSize}")
            .to("file:outbox");**

The route works fine and all the files are downloaded. But the batch details (ie CamelFileBatchIndex and CamelFileBatchSize) are not getting logged.

Please find below the output -

**2016-06-28 18:56:24.600  INFO 8696 --- [           main] com.camel.examples.CamelApplication      : Started CamelApplication in 9.814 seconds (JVM running for 11.237)**

**2016-06-28 18:56:28.594  INFO 8696 --- [/inbox] route1                                   : Batch Index = , Batch Size =**

Answer 1

You are using the wrong names for those fields. You can find their constant values here: http://camel.apache.org/maven/current/camel-core/apidocs/constant-values.html#org.apache.camel.Exchange.BATCH_INDEX

Its CamelBatchSize and CamelBatchIndex