英文:
How to pass data into spring batch ItemProcessor?
问题
我有一个包含数据记录（案例）的CSV文件，我创建了一个caseDTO对象来存储这些数据。然而，caseDTO的一些属性必须从文件名中包含的数据中提取（每个文件的名称都必须具有严格的结构，包含一些数据）。
我想要实现的目标是将文件名中包含的数据传递给项目处理器（item processor），在将其传递给项目写入器（item writer）之前，将此数据追加到每个caseDTO中。
是否有人知道如何在从控制器启动作业时将数据传递给步骤中的itemProcessor？
提前感谢。
英文:
I have a CSV file that contains records of data (cases), for which I created a caseDTO object , however some of the properties of the caseDTO must be field from data included in the file name (every file must has a name with strict structure that contains some data).
What i want to achieve is to pass the data included in the file name to the item processor where i will append this data into every caseDTO before passing it to the item writer.
Does any one knows how to pass data to a step itemProcessor when I launch the job from the controller?
Thanks in advance.
答案1
得分: 0
最简单的解决方案是将动态参数设置在作业参数中，这样步骤的写入器、处理器和读取器就可以访问它们。通过以下方式将它们的值注入：
@Value("#{jobParameters['fileName']}")
public void setFileName(final String name) {
//...
}
英文:
the simplest solution is to set the dynamic parameters in the job parameters so the step's writer , processor , reader can have access to it . by injecting their values as following
@Value("#{jobParameters['fileName']}")
public void setFileName(final String name) {
//...
}
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