POI SXSSF by default uses in-lined strings.

org.jberet.support.io.ExcelStreamingItemWriter currently does not support using shared string tables when generating .xlsx files, since this feature is not available in poi 3.10-FINAL. The fix POI Bug 53130 was committed on 2014-02-14, after 3.10-FINAL release.

Need to add the option to org.jberet.support.io.ExcelStreamingItemWriter to enable/disable shared strings table once next version of POI is available.

http://search.maven.org/#search|gav|1|g%3A%22org.apache.poi%22%20AND%20a%3A%22poi%22