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返回目录：excel表格制作
//poi-3.7.jar
/**
* 合并7a64e4b893e5b19e337单元格处理--加入list
*
* @param sheet
* @return
*/
public void getCombineCell(HSSFSheet sheet, List<CellRangeAddress> list) {
// 获得一个 sheet 中合并单元格的数量
int sheetmergerCount = sheet.getNumMergedRegions();
// 遍历合并单元格
for (int i = 0; i < sheetmergerCount; i++) {
// 获得合并单元格加入list中
CellRangeAddress ca = sheet.getMergedRegion(i);
list.add(ca);
}
}
/**
* 判断单元格是否为合并单元格
*
* @param listCombineCell
* 存放合并单元格的list
* @param cell
* 需要判断的单元格
* @param sheet
* sheet
* @return
*/
public static Boolean isCombineCell(List<CellRangeAddress> listCombineCell,
HSSFCell cell, HSSFSheet sheet) {
int firstC = 0;
int lastC = 0;
int firstR = 0;
int lastR = 0;
for (CellRangeAddress ca : listCombineCell) {
// 获得合并单元格的起始行, 结束行, 起始列, 结束列
firstC = ca.getFirstColumn();
lastC = ca.getLastColumn();
firstR = ca.getFirstRow();
lastR = ca.getLastRow();
if (cell.getColumnIndex() <= lastC&& cell.getColumnIndex()>= firstC) {
if (cell.getRowIndex() <= lastR && cell.getRowIndex() >= firstR) {
return true;
}
}
}
return false;
}
}
可以看看这一7a64e59b9ee7ad94333页
要一个其中的例子
Java code
// Setup code
String cellName = "TestName";
Workbook wb = getMyWorkbook(); // retrieve workbook
// Retrieve the named range
// Will be something like "$C$10,$D$12:$D$14";
int namedCellIdx = wb.getNameIndex(cellName);
Name aNamedCell = wb.getNameAt(namedCellIdx);
// Retrieve the cell at the named range and test its contents
// Will get back one AreaReference for C10, and
// another for D12 to D14
AreaReference[] arefs = AreaReference.generateContiguous(aNamedCell.getRefersToFormula());
for (int i=0; i<arefs.length; i++) {
// Only get the corners of the Area
// (use arefs[i].getAllReferencedCells() to get all cells)
CellReference[] crefs = arefs[i].getCells();
for (int j=0; j<crefs.length; j++) {
// Check it turns into real stuff
Sheet s = wb.getSheet(crefs[j].getSheetName());
Row r = s.getRow(crefs[j].getRow());
Cell c = r.getCell(crefs[j].getCol());
// Do something with this corner cell
}
}
package edu.sjtu.erplab.poi;
import java.io.InputStream&ch=ww.xqy.chain" target="_blank" class="link-baike">FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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.poifs.filesystem.POIFSFileSystem;
/**
* 操作Excel表格的功能类
*/
public class ExcelReader {
private POIFSFileSystem fs;
private HSSFWorkbook wb;
private HSSFSheet sheet;
private HSSFRow row;
/**
* 读取Excel表格表头的内容
* @param InputStream
* @return String 表头内容的数组
*/
public String[] readExcelTitle(InputStream is) {
try {
fs = new POIFSFileSystem(is);
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
sheet = wb.getSheetAt(0);
row = sheet.getRow(0);
// 标题总列数
int colNum = row.getPhysicalNumberOfCells();
System.out.println("colNum:" + colNum);
String[] title = new String[colNum];
for (int i = 0; i < colNum; i++) {
//title[i] = getStringCellValue(row.getCell((short) i));
title[i] = getCellFormatValue(row.getCell((short) i));
}
return title;
}
/**
* 读取Excel数据内容
* @param InputStream
* @return Map 包含单元格数据内容的Map对象
*/
public Map<Integer, String> readExcelContent(InputStream is) {
Map<Integer, String> content = new HashMap<Integer, String>();
String str = "";
try {
fs = new POIFSFileSystem(is);
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
sheet = wb.getSheetAt(0);
// 得到总行数
int rowNum = sheet.getLastRowNum();
row = sheet.getRow(0);
int colNum = row.getPhysicalNumberOfCells();
// 正文内容应该从第二行开始,第一行为表头的标题
for (int i = 1; i <= rowNum; i++) {
row = sheet.getRow(i);
int j = 0;
while (j < colNum) {
// 每个单元格的数据内容用"-"分割开，以后需要时用String类的replace()方法e79fa5e98193e58685e5aeb9336还原数据
// 也可以将每个单元格的数据设置到一个javabean的属性中，此时需要新建一个javabean
// str += getStringCellValue(row.getCell((short) j)).trim() +
// "-";
str += getCellFormatValue(row.getCell((short) j)).trim() + " ";
j++;
}
content.put(i, str);
str = "";
}
return content;
}
/**
* 获取单元格数据内容为字符串类型的数据
*
* @param cell Excel单元格
* @return String 单元格数据内容
*/
private String getStringCellValue(HSSFCell cell) {
String strCell = "";
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
strCell = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
strCell = String.valueOf(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
strCell = String.valueOf(cell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
strCell = "";
break;
default:
strCell = "";
break;
}
if (strCell.equals("") || strCell == null) {
return "";
}
if (cell == null) {
return "";
}
return strCell;
}
/**
* 获取单元格数据内容为日期类型的数据
*
* @param cell
* Excel单元格
* @return String 单元格数据内容
*/
private String getDateCellValue(HSSFCell cell) {
String result = "";
try {
int cellType = cell.getCellType();
if (cellType == HSSFCell.CELL_TYPE_NUMERIC) {
Date date = cell.getDateCellValue();
result = (date.getYear() + 1900) + "-" + (date.getMonth() + 1)
+ "-" + date.getDate();
} else if (cellType == HSSFCell.CELL_TYPE_STRING) {
String date = getStringCellValue(cell);
result = date.replaceAll("[年月]", "-").replace("日", "").trim();
} else if (cellType == HSSFCell.CELL_TYPE_BLANK) {
result = "";
}
} catch (Exception e) {
System.out.println("日期格式不正确!");
e.printStackTrace();
}
return result;
}
/**
* 根据HSSFCell类型设置数据
* @param cell
* @return
*/
private String getCellFormatValue(HSSFCell cell) {
String cellvalue = "";
if (cell != null) {
// 判断当前Cell的Type
switch (cell.getCellType()) {
// 如果当前Cell的Type为NUMERIC
case HSSFCell.CELL_TYPE_NUMERIC:
case HSSFCell.CELL_TYPE_FORMULA: {
// 判断当前的cell是否为Date
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// 如果是Date类型则，转化为Data格式
//方法1：这样子的data格式是带时分秒的：2011-10-12 0:00:00
//cellvalue = cell.getDateCellValue().toLocaleString();
//方法2：这样子的data格式是不带带时分秒的：2011-10-12
Date date = cell.getDateCellValue();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
cellvalue = sdf.format(date);
}
// 如果是纯数字
else {
// 取得当前Cell的数值
cellvalue = String.valueOf(cell.getNumericCellValue());
}
break;
}
// 如果当前Cell的Type为STRIN
case HSSFCell.CELL_TYPE_STRING:
// 取得当前的Cell字符串
cellvalue = cell.getRichStringCellValue().getString();
break;
// 默认的Cell值
default:
cellvalue = " ";
}
} else {
cellvalue = "";
}
return cellvalue;
}
public static void main(String[] args) {
try {
// 对读取Excel表格标题测试
InputStream is = new FileInputStream("d:\\test2.xls");
ExcelReader excelReader = new ExcelReader();
String[] title = excelReader.readExcelTitle(is);
System.out.println("获得Excel表格的标题:");
for (String s : title) {
System.out.print(s + " ");
}
// 对读取Excel表格内容测试
InputStream is2 = new FileInputStream("d:\\test2.xls");
Map<Integer, String> map = excelReader.readExcelContent(is2);
System.out.println("获得Excel表格的内容:");
for (int i = 1; i <= map.size(); i++) {
System.out.println(map.get(i));
}
} catch (FileNotFoundException e) {
System.out.println("未找到指定路径的文件!");
e.printStackTrace();
}
}
}
在实现java poi对excel表操纵的过程中，想要把数据填入excel表格里面的某个坐标里面的时候。去百度的过程中发现都是先拿到row的坐标，然后拿到那个row中的cell的坐标，都是从0下标开始的抄，这种操作写一片数据zhidao当然舒服，用for循环来实现，但是我只是想往H5那个坐标写东西，这就很蛋疼。百度了很久无果之后，还是自己老实翻了翻java poi的接口，java poi celladdress,总算找到我想要的接口了，这个接口可以直接找到H5这个的坐标的row下标和cell下标，这样就可以直接用程序实现，开个map映射<坐标>:<数据>，来实现自动化单元格数据填写。