Spring批处理 - 从MultiResourceItemReader传递资源名称> FlatFileItemReader到StepExecutionListener

问题描述

我有一个Spring Batch作业，需要做以下工作：

• 检查本地文件系统中可能包含多个目录的目录文件


• 处理每个文件，将这些文件中的数据保存到数据库中
  
• 通过添加后缀重命名文件以包含PROCESSED或ERROR
>

我已经使用了下面的

• A MultiResourceItemReader 读取文件并委托给 FlatFileItemReader


• FlatFileItemReader 使用 LineMapper em>， FieldSetMapper


• ItemProcessor 操作数据读取
写入数据库

我想要做什么
$ b

• 
  
• 根据执行状态将每个文件重命名为步骤结束时的PROCESSED / ERROR
如何传递 FlatFileItemReade的资源文件名r 处理到 StepExecutionListener ？

• 如何将资源文件名传递给 ItemProcessor 保存读取数据的文件的名称

下面是我的相关配置

 < batch：job id =myJobjob-repository =jobRepository> 
< batch：step id =processFiles> 
< batch：tasklet> 
< batch：chunk reader =multiResourceReaderprocessor =myItemProcessorwriter =myItemWritercommit-interval =100/> 
< / batch：tasklet> 
< batch：listeners> 
< batch：listener ref =myStepListener/> 
< / batch：listeners> 
 < / batch：job> 
  

解决方案

这种情况类似于
我更喜欢解决方案＃2：海事组织的成功/错误条件很容易检查，步骤流程更清晰，分离。

请考虑，我希望我的建议能够帮到你。

I have a Spring Batch job that needs to do the below

• Check a directory on local file system that may contain more than one file
• Process each of the files, save data from those files to database
• Rename files by adding a suffix to include PROCESSED or ERROR

I have used the below

• A MultiResourceItemReader that reads files and delegates to a FlatFileItemReader
• The FlatFileItemReader reads data using LineMapper, FieldSetMapper
• An ItemProcessor manipulates data read
• An ItemWriter writes to the database

What I want to do

• Rename each file to either PROCESSED / ERROR at the end of Step based on execution status
• How do I pass the resource file name that the FlatFileItemReader processes to the StepExecutionListener?
• How do I pass the resource file name to the ItemProcessor as it also needs to save the name of the file the data was read from

Below is my relevant config

<batch:job id="myJob" job-repository="jobRepository">
    <batch:step id="processFiles">
        <batch:tasklet>
            <batch:chunk reader="multiResourceReader" processor="myItemProcessor" writer="myItemWriter" commit-interval="100" />
        </batch:tasklet>
        <batch:listeners>
            <batch:listener ref="myStepListener"/>
        </batch:listeners>
    </batch:step>
</batch:job>

解决方案

This scenario is similar to this one.
I'm not a fan of first solution because is too messy and file rename is "hidden" into java code and can't be easily detected from job's xml definition.
I prefer solution #2: IMO success/error conditions are easy to check and step flow is more cleaner and well separated.
Get your consideration, I hope my advices will help.

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