I want to configure spring-batch
to read all csv
files inside a specific folder sequentially.
The following does not work because the delegate will try to open a file named *.csv
, which of course is invalid. What do I have to change here?
@Bean
public ItemReader<String> reader() {
MultiResourceItemReader<String> reader = new MultiResourceItemReader<>();
reader.setResources(new Resource[] {new FileSystemResource("/myfolder/*.csv")});
reader.setDelegate(new FlatFileItemReader<>(..));
return reader;
}
The equivalent xml configuration would be written as follows, how could I rewrite it to java only config?
<bean id="reader" class="org.springframework.batch.item.file.MultiResourceItemReader">
<property name="resources" value="/mypfolder/*.csv"/>
<property name="delegate" ref="flatFileItemReader"/>
</bean>
Use PathMatchingResourcePatternResolver like this.
@Bean
public ItemReader<String> reader() {
Resource[] resources = null;
ResourcePatternResolver patternResolver = new PathMatchingResourcePatternResolver();
try {
resources = patternResolver.getResources("/myfolder/*.csv");
} catch (IOException e) {
e.printStackTrace();
}
MultiResourceItemReader<String> reader = new MultiResourceItemReader<>();
reader.setResources(resources);
reader.setDelegate(new FlatFileItemReader<>(..));
return reader;
}