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use try-with-resources in more places 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1817247 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
PJ Fanning 2017-12-05 22:31:59 +00:00
parent 49b7fd5342
commit 37a349dc19
3 changed files with 136 additions and 132 deletions
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8
src/examples/src/org/apache/poi/xssf/eventusermodel/XLSX2CSV.java
View File

@ -209,12 +209,12 @@ public class XLSX2CSV {
XSSFReader.SheetIterator iter = (XSSFReader.SheetIterator) xssfReader.getSheetsData();
int index = 0;
while (iter.hasNext()) {
InputStream stream = iter.next();
try (InputStream stream = iter.next()) {
String sheetName = iter.getSheetName();
this.output.println();
this.output.println(sheetName + " [index=" + index + "]:");
processSheet(styles, strings, new SheetToCSV(), stream);
stream.close();
}
++index;
}
}
@ -237,9 +237,9 @@ public class XLSX2CSV {
minColumns = Integer.parseInt(args[1]);
// The package open is instantaneous, as it should be.
OPCPackage p = OPCPackage.open(xlsxFile.getPath(), PackageAccess.READ);
try (OPCPackage p = OPCPackage.open(xlsxFile.getPath(), PackageAccess.READ)) {
XLSX2CSV xlsx2csv = new XLSX2CSV(p, System.out, minColumns);
xlsx2csv.process();
p.close();
}
}
}

18
src/examples/src/org/apache/poi/xssf/eventusermodel/examples/FromHowTo.java
View File

@ -21,7 +21,10 @@ import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.poi.openxml4j.opc.PackageAccess;
import org.apache.poi.util.SAXHelper;
import org.apache.poi.xssf.eventusermodel.XLSX2CSV;
import org.apache.poi.xssf.eventusermodel.XSSFReader;
import org.apache.poi.xssf.model.SharedStringsTable;
@ -33,7 +36,6 @@ import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* XSSF and SAX (Event API) basic example.
@ -49,10 +51,10 @@ public class FromHowTo {
XMLReader parser = fetchSheetParser(sst);
// process the first sheet
InputStream sheet2 = r.getSheetsData().next();
InputSource sheetSource = new InputSource(sheet2);
try (InputStream sheet = r.getSheetsData().next()) {
InputSource sheetSource = new InputSource(sheet);
parser.parse(sheetSource);
sheet2.close();
}
}
}
@ -66,17 +68,17 @@ public class FromHowTo {
Iterator<InputStream> sheets = r.getSheetsData();
while (sheets.hasNext()) {
System.out.println("Processing new sheet:\n");
InputStream sheet = sheets.next();
try (InputStream sheet = sheets.next()) {
InputSource sheetSource = new InputSource(sheet);
parser.parse(sheetSource);
sheet.close();
}
System.out.println("");
}
}
}
public XMLReader fetchSheetParser(SharedStringsTable sst) throws SAXException {
XMLReader parser = XMLReaderFactory.createXMLReader();
public XMLReader fetchSheetParser(SharedStringsTable sst) throws SAXException, ParserConfigurationException {
XMLReader parser = SAXHelper.newXMLReader();
ContentHandler handler = new SheetHandler(sst);
parser.setContentHandler(handler);
return parser;

8
src/examples/src/org/apache/poi/xssf/streaming/examples/HybridStreaming.java
View File

@ -39,9 +39,11 @@ public class HybridStreaming {
private static final String SHEET_TO_STREAM = "large sheet";
public static void main(String[] args) throws IOException, SAXException {
InputStream sourceBytes = new FileInputStream("workbook.xlsx");
try (InputStream sourceBytes = new FileInputStream("workbook.xlsx")) {
XSSFWorkbook workbook = new XSSFWorkbook(sourceBytes) {
/** Avoid DOM parse of large sheet */
/**
* Avoid DOM parse of large sheet
*/
@Override
public void parseSheet(java.util.Map<String, XSSFSheet> shIdMap, CTSheet ctSheet) {
if (!SHEET_TO_STREAM.equals(ctSheet.getName())) {
@ -54,7 +56,7 @@ public class HybridStreaming {
ReadOnlySharedStringsTable strings = new ReadOnlySharedStringsTable(workbook.getPackage());
new XSSFSheetXMLHandler(workbook.getStylesSource(), strings, createSheetContentsHandler(), false);
workbook.close();
sourceBytes.close();
}
}
private static SheetContentsHandler createSheetContentsHandler() {