/**
* Compute width of a column based on a subset of the rows and return the result
*
* @param sheet the sheet to calculate
* @param column 0-based index of the column
* @param useMergedCells whether to use merged cells
* @param firstRow 0-based index of the first row to consider (inclusive)
* @param lastRow 0-based index of the last row to consider (inclusive)
* @return the width in pixels
*/
public static double getColumnWidth(
Sheet sheet, int column, boolean useMergedCells, int firstRow, int lastRow) {
AttributedString str;
TextLayout layout;
Workbook wb = sheet.getWorkbook();
DataFormatter formatter = new DataFormatter();
Font defaultFont = wb.getFontAt((short) 0);
str = new AttributedString(String.valueOf(defaultChar));
copyAttributes(defaultFont, str, 0, 1);
layout = new TextLayout(str.getIterator(), fontRenderContext);
int defaultCharWidth = (int) layout.getAdvance();
double width = -1;
for (int rowIdx = firstRow; rowIdx <= lastRow; ++rowIdx) {
Row row = sheet.getRow(rowIdx);
if (row != null) {
Cell cell = row.getCell(column);
if (cell == null) {
continue;
}
double cellWidth = getCellWidth(cell, defaultCharWidth, formatter, useMergedCells);
width = Math.max(width, cellWidth);
}
}
return width;
}
public static void generateTrainingDataRandom(int trainingDataSize) {
testDataLL = (LinkedList<String[]>) dataLL.clone();
actualClassifications = (LinkedList<String>) classificationsLL.clone();
for (int i = 0; i < trainingDataSize; i++) {
int index = (int) (Math.random() * testDataLL.size());
generateTrainingData(index);
}
}
public static void generateTrainingDataStride(int trainingDataSize) {
testDataLL = (LinkedList<String[]>) dataLL.clone();
actualClassifications = (LinkedList<String>) classificationsLL.clone();
int removalCount = 0;
for (int i = 0; i < trainingDataSize; i++) {
double index = i * ((double) dataLL.size() / (double) trainingDataSize);
generateTrainingData((int) (Math.round(index) - removalCount));
removalCount++;
}
}
public void setCell(int index, double value) {
HSSFCell cell = this.row.createCell((short) index);
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellValue(value);
// HSSFCellStyle cellStyle = workbook.createCellStyle();
// HSSFDataFormat format = workbook.createDataFormat();
// setBorder(cellStyle);
_sims[(int) Math.floor(value * 10)]++;
HSSFCellStyle cellStyle = normalPStyle;
if (_backColor > -1) {
if (_backColor == HSSFColor.RED.index) cellStyle = redPStyle;
else if (_backColor == HSSFColor.YELLOW.index) cellStyle = yellowPStyle;
}
// cellStyle.setDataFormat(format.getFormat(NUMBER_FORMAT));
cell.setCellStyle(cellStyle);
}
/**
* Compute width of a single cell
*
* @param cell the cell whose width is to be calculated
* @param defaultCharWidth the width of a single character
* @param formatter formatter used to prepare the text to be measured
* @param useMergedCells whether to use merged cells
* @return the width in pixels
*/
public static double getCellWidth(
Cell cell, int defaultCharWidth, DataFormatter formatter, boolean useMergedCells) {
Sheet sheet = cell.getSheet();
Workbook wb = sheet.getWorkbook();
Row row = cell.getRow();
int column = cell.getColumnIndex();
int colspan = 1;
for (int i = 0; i < sheet.getNumMergedRegions(); i++) {
CellRangeAddress region = sheet.getMergedRegion(i);
if (containsCell(region, row.getRowNum(), column)) {
if (!useMergedCells) {
// If we're not using merged cells, skip this one and move on to the next.
return -1;
}
cell = row.getCell(region.getFirstColumn());
colspan = 1 + region.getLastColumn() - region.getFirstColumn();
}
}
CellStyle style = cell.getCellStyle();
int cellType = cell.getCellType();
// for formula cells we compute the cell width for the cached formula result
if (cellType == Cell.CELL_TYPE_FORMULA) cellType = cell.getCachedFormulaResultType();
Font font = wb.getFontAt(style.getFontIndex());
AttributedString str;
TextLayout layout;
double width = -1;
if (cellType == Cell.CELL_TYPE_STRING) {
RichTextString rt = cell.getRichStringCellValue();
String[] lines = rt.getString().split("\\n");
for (int i = 0; i < lines.length; i++) {
String txt = lines[i] + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
if (rt.numFormattingRuns() > 0) {
// TODO: support rich text fragments
}
layout = new TextLayout(str.getIterator(), fontRenderContext);
if (style.getRotation() != 0) {
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(
AffineTransform.getRotateInstance(style.getRotation() * 2.0 * Math.PI / 360.0));
trans.concatenate(AffineTransform.getScaleInstance(1, fontHeightMultiple));
width =
Math.max(
width,
((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth)
+ cell.getCellStyle().getIndention());
} else {
width =
Math.max(
width,
((layout.getBounds().getWidth() / colspan) / defaultCharWidth)
+ cell.getCellStyle().getIndention());
}
}
} else {
String sval = null;
if (cellType == Cell.CELL_TYPE_NUMERIC) {
// Try to get it formatted to look the same as excel
try {
sval = formatter.formatCellValue(cell, dummyEvaluator);
} catch (Exception e) {
sval = String.valueOf(cell.getNumericCellValue());
}
} else if (cellType == Cell.CELL_TYPE_BOOLEAN) {
sval = String.valueOf(cell.getBooleanCellValue()).toUpperCase();
}
if (sval != null) {
String txt = sval + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
layout = new TextLayout(str.getIterator(), fontRenderContext);
if (style.getRotation() != 0) {
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(
AffineTransform.getRotateInstance(style.getRotation() * 2.0 * Math.PI / 360.0));
trans.concatenate(AffineTransform.getScaleInstance(1, fontHeightMultiple));
width =
Math.max(
width,
((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth)
+ cell.getCellStyle().getIndention());
} else {
width =
Math.max(
width,
((layout.getBounds().getWidth() / colspan) / defaultCharWidth)
+ cell.getCellStyle().getIndention());
}
}
}
return width;
}
@Test
public void test_poi() {
final int rowNum = 27;
final int colNum = 15;
HSSFWorkbook wb = null;
Sheet sheet = null;
String today = "2013/8/31";
String sign = "Month to date";
String[] titles = {
"",
"",
"",
"Chinapay eMail\r\n 商城总计",
"Japan Page\r\n 日本馆首页",
"Taiwan Page\r\n 台湾馆首页",
"USA Page\r\n 美国馆首页",
"Anhui Page\r\n 安徽馆首页",
"China Page\r\n 中国馆首页"
};
String[] colNames = {
"",
"Page View (PV)\r\n 浏览量",
"Unique Visitor (UV)\r\n 独立访客",
"Completed Orders\r\n 确认订单",
"Transaction Amount\r\n 交易金额",
"1st Top Seller\r\n 最佳销量",
"Unit Price 单价",
"Qty Sold 销量",
"2nd Top Seller\r\n 第二销量",
"Unit Price 单价",
"Qty Sold 销量",
"3rd Top Seller\r\n 第三销量",
"Unit Price 单价",
"Qty Sold 销量",
"1st Top Seller\r\n 最佳销量",
"Unit Price 单价",
"Qty Sold 销量",
"2nd Top Seller\r\n 第二销量",
"Unit Price 单价",
"Qty Sold 销量",
"3rd Top Seller\r\n 第三销量",
"Unit Price 单价",
"Qty Sold 销量"
};
int n = 0;
int len = 1;
String fileName = "D:/日报.xls";
File f = new File(fileName);
ByteArrayOutputStream byteArrayOut = null;
BufferedImage bufferImg = null;
String[] jpgUrls = {
"http://img.chinapay.com/data/files/store_37452/goods_93/small_201303271804531386.jpg",
"http://img.chinapay.com/data/files/store_44066/goods_37/201308280953576580.jpg",
"http://img.chinapay.com/data/files/store_289253/goods_95/small_201309031434558044.jpg",
"http://img.chinapay.com/data/files/store_289253/goods_180/small_201309031403003861.jpg",
"http://img.chinapay.com/data/files/store_37452/goods_98/small_201309121508186810.jpg",
"http://img.chinapay.com/data/files/store_37452/goods_24/small_201301241133447193.jpg"
};
String[] https = {
"http://emall.chinapay.com/goods/37452/1010000109792.html",
"http://emall.chinapay.com/goods/44066/1010000119323.html",
"http://emall.chinapay.com/goods/289253/1010000119621.html?jpsv=laoxcashback6",
"http://emall.chinapay.com/goods/289253/1010000119627.html?jpsv=laoxcashback6",
"http://emall.chinapay.com/goods/37452/1010000120588.html",
"http://emall.chinapay.com/goods/37452/1010000107096.html"
};
URL url = null;
HSSFHyperlink link = null;
HSSFPatriarch patri = null;
HSSFClientAnchor anchor = null;
try {
if (!f.exists()) {
wb = new HSSFWorkbook();
} else {
FileInputStream in = new FileInputStream(fileName);
wb = new HSSFWorkbook(in);
}
CellStyle style = wb.createCellStyle();
style.setFillForegroundColor(HSSFCellStyle.THIN_BACKWARD_DIAG);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 垂直居中
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// style.setLeftBorderColor(HSSFColor.RED.index);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 下边框
style.setBorderLeft(HSSFCellStyle.BORDER_THIN); // 左边框
style.setBorderTop(HSSFCellStyle.BORDER_THIN); // 上边框
style.setBorderRight(HSSFCellStyle.BORDER_THIN); // 右边框
style.setWrapText(true);
sheet = wb.createSheet("sheet " + ((int) (100000 * Math.random())));
// 设置列的宽度
sheet.setDefaultColumnWidth(20);
sheet.setDefaultRowHeight((short) 400);
Row row = null;
Cell cell = null;
for (int r = 0; r < rowNum; r++) {
row = sheet.createRow(r);
// 设置第1行当高度
if (r == 0) {
row.setHeightInPoints(30);
}
// 设置第2列以后的宽度(即列号>=2的列，列号从0开始)
if (r >= 2) {
sheet.setColumnWidth(r, 3020);
}
for (int c = 0; c < colNum; c++) {
cell = row.createCell(c);
cell.setCellStyle(style);
// 处理第一行
if (r == 0) {
sheet.addMergedRegion(new CellRangeAddress(r, r, 3, 4));
sheet.addMergedRegion(new CellRangeAddress(r, r, 5, 6));
sheet.addMergedRegion(new CellRangeAddress(r, r, 7, 8));
sheet.addMergedRegion(new CellRangeAddress(r, r, 9, 10));
sheet.addMergedRegion(new CellRangeAddress(r, r, 11, 12));
sheet.addMergedRegion(new CellRangeAddress(r, r, 13, 14));
if (c < 3) {
cell.setCellValue(titles[n++]);
} else {
if ((c & 1) == 1) {
System.out.println("c===" + c);
cell.setCellValue(titles[n++]);
}
}
}
// 处理第2~8行
if (r > 0 && r <= 8) {
if (c == 0) {
if (r < 8 && (r & 1) == 1) {
sheet.addMergedRegion(new CellRangeAddress(r, r + 1, 0, 0));
System.err.println("row----->" + r + " len----->" + (len));
cell.setCellValue(colNames[len++]);
} else if (r > 8) {
System.out.println("len+++++++++>" + (len));
cell.setCellValue(colNames[len++]);
}
} else if (c == 1) {
cell.setCellValue((r & 1) == 1 ? today : sign);
System.err.println("r---->" + r);
} else if (c == 2) {
cell.setCellValue((r & 1) == 1 ? "当天" : "当月");
} else {
if ((c & 1) == 1) {
sheet.addMergedRegion(new CellRangeAddress(r, r, c, c + 1));
cell.setCellValue("26.55");
}
}
}
// 处理第8行以后的数据(不包括第8行)
if (r > 8) {
// 设置列高(图片的高度)
if (r % 3 == 0) {
sheet.getRow(r).setHeightInPoints(110);
}
if (c == 0) {
System.err.println("r---->" + r);
cell.setCellValue(colNames[r - 4]);
} else if (c == 1) {
cell.setCellValue((r % 3) == 0 ? today : (r % 3 == 1 ? "PV 浏览量" : "Total Sales 总额"));
} else if (c == 2) {
if (r % 9 == 0) {
sheet.addMergedRegion(new CellRangeAddress(r, r + 8, c, c));
if (r / 9 == 1) cell.setCellValue("当天");
else cell.setCellValue("当月");
cell.setCellStyle(style);
}
} else {
if (r % 3 == 0) {
if ((c & 1) == 1) {
sheet.addMergedRegion(new CellRangeAddress(r, r, c, c + 1));
// 添加远程图片信息
url = new URL(jpgUrls[(c - 3) / 2]);
bufferImg = ImageIO.read(url.openStream());
byteArrayOut = new ByteArrayOutputStream();
ImageIO.write(bufferImg, "jpg", byteArrayOut);
patri = (HSSFPatriarch) sheet.createDrawingPatriarch();
anchor = new HSSFClientAnchor(10, 2, 0, 0, (short) c, r, (short) (c + 2), r + 1);
patri.createPicture(
anchor,
wb.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG));
bufferImg.flush();
// link = new HSSFHyperlink(HSSFHyperlink.LINK_URL);
// System.out.println(https[(c-3)/2]);
// link.setAddress("fetion/"+https[(c-3)/2]);
// cell.setHyperlink(link);
// link = (HSSFHyperlink) cell.getHyperlink();
// link = new HSSFHyperlink(HSSFHyperlink.LINK_URL);
// link.setAddress(https[(c-3)/2]);
// cell.setHyperlink(link);
}
} else {
if ((c & 1) == 0) {
link = wb.getCreationHelper().createHyperlink(Hyperlink.LINK_URL);
link.setAddress(https[(c - 3) / 2]);
cell.setHyperlink(link); // 设定单元格的链接
cell.setCellValue("图片超链接");
} else {
cell.setCellValue("Number");
}
}
}
}
}
}
// 备注
row = sheet.createRow(27);
cell = row.createCell(0);
sheet.addMergedRegion(new CellRangeAddress(27, 27, 0, colNum - 1));
cell.setCellValue("* 销量排名不以销售金额计算，如相同销量者，则以PV量少者为优胜");
FileOutputStream out = new FileOutputStream(fileName);
wb.write(out);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("++++++++++++ EXCEl文件 success +++++++++++++");
}