java 读取Excel并文档生成table

package com.enfang.tools.util;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.math.BigDecimal;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFDateUtil;

import org.apache.poi.hssf.usermodel.HSSFFont;

import org.apache.poi.hssf.usermodel.HSSFPalette;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.hssf.util.HSSFColor;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellStyle;

import org.apache.poi.ss.util.CellRangeAddress;

public class ReadExcel {

public ReadExcel(){

}

/**

* SID.

*/

public StringBuffer excel;

public StringBuffer getExcel() {

return excel;

}

public void setExcel(StringBuffer excel) {

this.excel = excel;

}

private static final long serialVersionUID = -8344971443770122206L;

/**

* 读取 Excel 显示页面.

* @param properties

* @return

* @throws Exception

*/

public String read(String path) throws Exception {

HSSFSheet sheet = null;

String onmouseover="";

StringBuffer lsb = new StringBuffer();

String excelFileName = path;

try {

HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(excelFileName)); // 获整个Excel

for (int sheetIndex = 0; sheetIndex < workbook.getNumberOfSheets(); sheetIndex++) {

sheet = workbook.getSheetAt(sheetIndex);// 获所有的sheet

String sheetName = workbook.getSheetName(sheetIndex); // sheetName

if (workbook.getSheetAt(sheetIndex) != null) {

sheet = workbook.getSheetAt(sheetIndex);// 获得不为空的这个sheet

if (sheet != null) {

int firstRowNum = sheet.getFirstRowNum(); // 第一行

int lastRowNum = sheet.getLastRowNum(); // 最后一行

// 构造Table

lsb.append("<table width=\"100%\" style=\"border:1px solid #000;border-width:1px 0 0 1px;margin:2px 0 2px 0;border-collapse:collapse;\">");

for (int rowNum = firstRowNum; rowNum <= lastRowNum; rowNum++) {

if (sheet.getRow(rowNum) != null) {// 如果行不为空，

HSSFRow row = sheet.getRow(rowNum);

short firstCellNum = row.getFirstCellNum(); // 该行的第一个单元格

short lastCellNum = row.getLastCellNum(); // 该行的最后一个单元格

int height = (int) (row.getHeight()/12.625); // 行的高度

lsb.append("<tr height=\""+height+"\" style=\"border:1px solid #000;border-width:0 1px 1px 0;margin:2px 0 2px 0;\">");

for (short cellNum = firstCellNum; cellNum <= lastCellNum; cellNum++) { // 循环该行的每一个单元格

HSSFCell cell = row.getCell(cellNum);

if (cell != null) {

if (cell.getCellType() == HSSFCell.CELL_TYPE_BLANK) {

// lsb.append("<td style=\"border:1px solid #000; border-width:0 1px 1px 0;margin:2px 0 2px 0; \">-<td>");

continue;

}else {

Object value = getCellValue(cell);

if(value.toString().length()>6){

onmouseover="onmouseover='this.title=this.innerText' ";

}

else

{

onmouseover="";

}

StringBuffer tdStyle =new StringBuffer("<td "+onmouseover+"style=\"border:1px solid #000; border-width:0 1px 1px 0;margin:2px 0 2px 0; ");

HSSFCellStyle cellStyle = cell.getCellStyle();

HSSFPalette palette = workbook.getCustomPalette(); //类HSSFPalette用于求颜色的国际标准形式

HSSFColor hColor = palette.getColor(cellStyle.getFillForegroundColor());

HSSFColor hColor2 = palette.getColor(cellStyle.getFont(workbook).getColor());

String bgColor = convertToStardColor(hColor);//背景颜色

short boldWeight = cellStyle.getFont(workbook).getBoldweight(); // 字体粗细

short fontHeight = (short) (cellStyle.getFont(workbook).getFontHeight() / 2); // 字体大小

String fontColor = convertToStardColor(hColor2); // 字体颜色

if(bgColor != null && !"".equals(bgColor.trim())){

tdStyle.append(" background-color:" + bgColor + "; ");

}

if(fontColor != null && !"".equals(fontColor.trim())) {

tdStyle.append(" color:" + fontColor + "; ");

}

tdStyle.append(" font-weight:" + boldWeight + "; ");

tdStyle.append(" font-size: " + fontHeight + "%;");

lsb.append(tdStyle + "\"");

int width = 50; //

int cellReginCol = getMergerCellRegionCol(sheet,rowNum, cellNum); // 合并的列（solspan）

int cellReginRow = getMergerCellRegionRow(sheet, rowNum, cellNum);// 合并的行（rowspan）

String align = convertAlignToHtml(cellStyle.getAlignment()); //

String vAlign = convertVerticalAlignToHtml(cellStyle.getVerticalAlignment());

lsb.append(" align=\"" + align + "\" valign=\""+vAlign+"\" width=\"" + (cellReginCol==0?width:width*cellReginCol) + "\" ");

lsb.append(" colspan=\"" + cellReginCol + "\" rowspan=\""+cellReginRow+"\"");

lsb.append(">"+value+"</td>");

//System.out.println("1");

}

}

}

lsb.append("</tr>");

}

}

}

}

}

} catch (FileNotFoundException e) {

e.getStackTrace();

} catch (IOException e) {

e.getStackTrace();

}

lsb.append("</table>");

excel=lsb;

// System.out.println(lsb);

return excel.toString();

}

/**

* 取得单元格的值

* @param cell

* @return

* @throws IOException

*/

private static Object getCellValue(HSSFCell cell) throws IOException {

//System.out.println("1");

Object value = "";

if(cell.getCellType() == HSSFCell.CELL_TYPE_STRING) {

value = cell.getRichStringCellValue().toString();

}else if(cell.getCellType() ==HSSFCell.CELL_TYPE_FORMULA){

value = String.valueOf(cell.getNumericCellValue());

if (value.equals("NaN")) {// 如果获取的数据值为非法值,则转换为获取字符串

value = cell.getRichStringCellValue().toString();

}

// value=
cell.getCellFormula().toString() + " ";

//System.out.println("2222"+cell.getNumericCellValue());

// System.out.println("111q"+value);

}else if(cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {

if (HSSFDateUtil.isCellDateFormatted(cell)) {

Date date = cell.getDateCellValue();

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

value = sdf.format(date);

} else {

if (cell.getCellStyle().getDataFormatString().indexOf("%") != -1) {

DecimalFormat df = new DecimalFormat("0.00");

value=df.format(cell.getNumericCellValue()*100)+"%";

}else{

cell.setCellType(Cell.CELL_TYPE_STRING);

value = cell.getStringCellValue();

}

/*

DecimalFormat format = new DecimalFormat("#0.###");

value = format.format(cell.getNumericCellValue());

*/

}

}

if (cell.getCellType() == HSSFCell.CELL_TYPE_BLANK) {

value = "";

}

return value;

}

/**

* 判断单元格在不在合并单元格范围内，如果是，获取其合并的列数。

* @param sheet 工作表

* @param cellRow 被判断的单元格的行号

* @param cellCol 被判断的单元格的列号

* @return

* @throws IOException

*/

private static int getMergerCellRegionCol(HSSFSheet sheet, int cellRow,int cellCol) throws IOException {

int retVal = 0;

int sheetMergerCount = sheet.getNumMergedRegions();

for (int i = 0; i < sheetMergerCount; i++) {

CellRangeAddress cra = (CellRangeAddress) sheet.getMergedRegion(i);

int firstRow = cra.getFirstRow(); // 合并单元格CELL起始行

int firstCol = cra.getFirstColumn(); // 合并单元格CELL起始列

int lastRow = cra.getLastRow(); // 合并单元格CELL结束行

int lastCol = cra.getLastColumn(); // 合并单元格CELL结束列

if (cellRow >= firstRow && cellRow <= lastRow) { // 判断该单元格是否是在合并单元格中

if (cellCol >= firstCol && cellCol <= lastCol) {

retVal = lastCol - firstCol+1; // 得到合并的列数

break;

}

}

}

return retVal;

}

/**

* 判断单元格是否是合并的单格，如果是，获取其合并的行数。

* @param sheet 表单

* @param cellRow 被判断的单元格的行号

* @param cellCol 被判断的单元格的列号

* @return

* @throws IOException

*/

private static int getMergerCellRegionRow(HSSFSheet sheet, int cellRow,int cellCol) throws IOException {

int retVal = 0;

int sheetMergerCount = sheet.getNumMergedRegions();

for (int i = 0; i < sheetMergerCount; i++) {

CellRangeAddress cra = (CellRangeAddress) sheet.getMergedRegion(i);

int firstRow = cra.getFirstRow(); // 合并单元格CELL起始行

int firstCol = cra.getFirstColumn(); // 合并单元格CELL起始列

int lastRow = cra.getLastRow(); // 合并单元格CELL结束行

int lastCol = cra.getLastColumn(); // 合并单元格CELL结束列

if (cellRow >= firstRow && cellRow <= lastRow) { // 判断该单元格是否是在合并单元格中

if (cellCol >= firstCol && cellCol <= lastCol) {

retVal = lastRow - firstRow + 1; // 得到合并的行数

break;

}

}

}

return retVal;

}

/**

* 单元格背景色转换

* @param hc

* @return

*/

private String convertToStardColor(HSSFColor hc) {

StringBuffer sb = new StringBuffer("");

if (hc != null) {

int a = HSSFColor.AUTOMATIC.index;

int b = hc.getIndex();

if (a == b) {

return null;

}

sb.append("#");

for (int i = 0; i < hc.getTriplet().length; i++) {

String str ;

String str_tmp = Integer.toHexString(hc.getTriplet()[i]);

if (str_tmp != null && str_tmp.length() < 2) {

str = "0" + str_tmp;

}else {

str = str_tmp;

}

sb.append(str);

}

}

return sb.toString();

}

/**

* 单元格小平对齐

* @param alignment

* @return

*/

private String convertAlignToHtml(short alignment) {

String align = "left";

switch (alignment) {

case HSSFCellStyle.ALIGN_LEFT:

align = "left";

break;

case HSSFCellStyle.ALIGN_CENTER:

align = "center";

break;

case HSSFCellStyle.ALIGN_RIGHT:

align = "right";

break;

default:

break;

}

return align;

}

/**

* 单元格垂直对齐

* @param verticalAlignment

* @return

*/

private String convertVerticalAlignToHtml(short verticalAlignment) {

String valign = "middle";

switch (verticalAlignment) {

case HSSFCellStyle.VERTICAL_BOTTOM:

valign = "bottom";

break;

case HSSFCellStyle.VERTICAL_CENTER:

valign = "center";

break;

case HSSFCellStyle.VERTICAL_TOP:

valign = "top";

break;

default:

break;

}

return valign;

}

}