Java BatchProperty 可以作为 List<String>？

Question

JSR-352 / Java Batch 中是否可以将批处理属性设置为列表？ 它们如何从批处理作业 XML 中初始化？

public class MyItemProcessor extends ItemProcessor {
    @Inject
    @BatchProperty
    private List<String> items;

    public final Object processItem(Object o) throws Exception {
        ...
    }
}

这是一个骨架批处理作业 xml：

<?xml version="1.0" encoding="UTF-8"?>
<job  xmlns="https://jakarta.ee/xml/ns/jakartaee" version="2.0" id="exportToExcel" restartable="true">
    <chunk item-count="10">
        ...some reader...
        <processor ref="MyItemProcessor">
            <properties>
                <property name="items"/> <-- how would the list of strings go in here?
            </properties>
        </processor>
        ...some writer...
    </chunk>
</job>

Answer 1

是的。请参阅下面的 JBeret 示例。这是 JBeret 特有的，而不是 Java Batch 规范中的标准功能。

https://github.com/jberet/jsr352/blob/main/test-apps/propertyInjection/src/main/java/org/jberet/testapps/propertyinjection/PropertyInjectionBatchlet.java#L215

https://github.com/jberet/jsr352/blob/main/test-apps/propertyInjection/src/main/resources/META-INF/batch-jobs/propertyInjection.xml#L38