Try this:
- Unzip XLSX file
- Read XML files
- Compose and use data
Example code:
public Workbook getTemplateData(String xlsxFile) {
Workbook workbook = new Workbook();
parseSharedStrings(xlsxFile);
parseWorkesheet(xlsxFile, workbook);
parseComments(xlsxFile, workbook);
for (Worksheet worksheet : workbook.sheets) {
worksheet.dimension = manager.getDimension(worksheet);
}
return workbook;
}
private void parseComments(String tmpFile, Workbook workbook) {
try {
FileInputStream fin = new FileInputStream(tmpFile);
final ZipInputStream zin = new ZipInputStream(fin);
InputStream in = getInputStream(zin);
while (true) {
ZipEntry entry = zin.getNextEntry();
if (entry == null)
break;
String name = entry.getName();
if (name.endsWith(".xml")) { //$NON-NLS-1$
if (name.contains(COMMENTS)) {
parseComments(in, workbook);
}
}
zin.closeEntry();
}
in.close();
zin.close();
fin.close();
} catch (FileNotFoundException e) {
System.out.println(e);
} catch (IOException e) {
e.printStackTrace();
}
}
private void parseComments(InputStream in, Workbook workbook) {
try {
DefaultHandler handler = getCommentHandler(workbook);
SAXParser saxParser = getSAXParser();
saxParser.parse(in, handler);
} catch (Exception e) {
e.printStackTrace();
}
}
private DefaultHandler getCommentHandler(Workbook workbook) {
final Worksheet ws = workbook.sheets.get(0);
return new DefaultHandler() {
String lastTag = "";
private Cell ccell;
@Override
public void startElement(String uri, String localName,
String qName, Attributes attributes) throws SAXException {
lastTag = qName;
if (lastTag.equals("comment")) {
String cellName = attributes.getValue("ref");
int r = manager.getRowIndex(cellName);
int c = manager.getColumnIndex(cellName);
Row row = ws.rows.get(r);
if (row == null) {
row = new Row();
row.index = r;
ws.rows.put(r, row);
}
ccell = row.cells.get(c);
if (ccell == null) {
ccell = new Cell();
ccell.cellName = cellName;
row.cells.put(c, ccell);
}
}
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
String val = "";
if (ccell != null && lastTag.equals("t")) {
for (int i = start; i < start + length; i++) {
val += ch[i];
}
if (ccell.comment == null)
ccell.comment = val;
else {
ccell.comment += val;
}
}
}
};
}
private void parseSharedStrings(String tmpFile) {
try {
FileInputStream fin = new FileInputStream(tmpFile);
final ZipInputStream zin = new ZipInputStream(fin);
InputStream in = getInputStream(zin);
while (true) {
ZipEntry entry = zin.getNextEntry();
if (entry == null)
break;
String name = entry.getName();
if (name.endsWith(".xml")) { //$NON-NLS-1$
if (name.startsWith(SHARED_STRINGS)) {
parseStrings(in);
}
}
zin.closeEntry();
}
in.close();
zin.close();
fin.close();
} catch (FileNotFoundException e) {
System.out.println(e);
} catch (IOException e) {
e.printStackTrace();
}
}
public void parseWorkesheet(String tmpFile, Workbook workbook) {
try {
FileInputStream fin = new FileInputStream(tmpFile);
final ZipInputStream zin = new ZipInputStream(fin);
InputStream in = getInputStream(zin);
while (true) {
ZipEntry entry = zin.getNextEntry();
if (entry == null)
break;
String name = entry.getName();
if (name.endsWith(".xml")) { //$NON-NLS-1$
if (name.contains("worksheets")) {
Worksheet worksheet = new Worksheet();
worksheet.name = name;
parseWorksheet(in, worksheet);
workbook.sheets.add(worksheet);
}
}
zin.closeEntry();
}
in.close();
zin.close();
fin.close();
} catch (FileNotFoundException e) {
System.out.println(e);
} catch (IOException e) {
e.printStackTrace();
}
}
public void parseWorksheet(InputStream in, Worksheet worksheet)
throws IOException {
// read sheet1 sharedStrings
// styles, strings, formulas ...
try {
DefaultHandler handler = getDefaultHandler(worksheet);
SAXParser saxParser = getSAXParser();
saxParser.parse(in, handler);
} catch (SAXException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
}
}
where Workbook class:
public class Workbook {
Integer id = null;
public List<Worksheet> sheets = new ArrayList<Worksheet>();}
and Worksheet class:
public class Worksheet {
public Integer id = null;
public String name = null;
public String dimension = null;
public Map<Integer, Row> rows = new TreeMap<Integer, Row>();
public Map<Integer, Column> columns = new TreeMap<Integer, Column>();
public List<Span> spans = new ArrayList<Span>();}
and Row class:
public class Row {
public Integer id = null;
public Integer index = null;
public Row tmpRow = null;
public Style style = null;
public Double height = null;
public Map<Integer,Cell> cells = new TreeMap<Integer, Cell>();
public String spans = null;
public Integer customHeight = null;}
and Cell class:
public class Cell {
public Integer id = null;
public Integer rowIndex = null;
public Integer colIndex = null;
public String cellName = null;
public String text = null;
public String formula = null;
public String comment = null;
public Style style = null;
public Object value = null;
public Cell tmpCell = null;}
and Column class:
public class Column {
public Integer index = null;
public Style style = null;
public String width = null;
public Column tmpColumn = null;
}
and Span class:
public class Span {
Integer id = null;
String topLeft = null;
String bottomRight = null;
}
