Apache Camel Bindy：在第 2 行的固定长度记录末尾发现意外/未映射的字符

Question

在 Camel 中出现以下异常：

Exchange[
    Id                  ID-Dell-PC-51429-1581618665098-0-4
    ExchangePattern     InOnly
    Headers             {breadcrumbId=ID-Dell-PC-51429-1581618665098-0-3, CamelFileAbsolute=false, CamelFileAbsolutePath=C:\Users\Dell\eclipse-workspace\camelHelloWorld\input\TIL.txt, CamelFileContentType=text/plain, CamelFileLastModified=1581618006722, CamelFileLength=12050, CamelFileName=TIL.txt, CamelFileNameConsumed=TIL.txt, CamelFileNameOnly=TIL.txt, CamelFileParent=input, CamelFilePath=input\TIL.txt, CamelFileRelativePath=TIL.txt, CamelRedelivered=false, CamelRedeliveryCounter=0}
    BodyType            org.apache.camel.component.file.GenericFile
    Body                [Body is file based: GenericFile[TIL.txt]]
]

Stacktrace
---------------------------------------------------------------------------------------------------------------------------------------
java.lang.IllegalArgumentException: Unexpected / unmapped characters found at the end of the fixed-length record at line : 2
    at org.apache.camel.dataformat.bindy.BindyFixedLengthFactory.bind(BindyFixedLengthFactory.java:281)
    at org.apache.camel.dataformat.bindy.fixed.BindyFixedLengthDataFormat.createModel(BindyFixedLengthDataFormat.java:262)
    at org.apache.camel.dataformat.bindy.fixed.BindyFixedLengthDataFormat.unmarshal(BindyFixedLengthDataFormat.java:196)
    at org.apache.camel.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:67)
    at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
    at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:448)
    at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
    at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
    at org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:433)
    at org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:211)
    at org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:175)
    at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:174)
    at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:101)
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(Unknown Source)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

正在尝试使用以下方法转换固定文件格式：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
 "id",
 "name",
  .
  .
})
@XmlRootElement(name = "Til")
@FixedLengthRecord(length = 239)
public class Til {

 @XmlElement(name = "ID", required = true)
 @DataField(pos = 1, length = 4)
 protected String id;

 @XmlElement(name = "NAME", required = true)
 @DataField(pos = 5, length = 15)
 protected String name;
 .
 .
}

文件中的字符总数为 239。

这个错误可能是什么原因造成的？需要任何类型的 trim 或填充来解决这个问题吗？

Answer 1

这可以通过在您的 POJO class 上应用以下代码来解决。这基本上是告诉 Bindy 根据 POJO 忽略最后映射的固定长度数据之后的字符。

@FixedLengthRecord(ignoreTrailingChars = true)

启用“查看”->“显示符号”->“显示所有字符”后，您或许可以在 notepad++ 中打开文件，然后查看末尾是否确实存在任何字符。在处理从不同 OS 生成的文件时，通常会注意到这些字符。您还可以仔细检查映射以确保所有字段实际上都按照正确的长度映射，这很容易被忽视。

Apache Camel Bindy：在第 2 行的固定长度记录末尾发现意外/未映射的字符

Apache Camel Bindy: Unexpected / unmapped characters found at the end of the fixed-length record at line : 2

apache-camel

bindy

fixed-format