POI工具类，对Excle文件的每行数据 映射为VO

我们在日常工作中，对Excle的操作是很频繁的。为了方便使用。我们想把对应的每一行数据转换为VO。以下是项目中常用的工具类。

这里解决了合并单元格的问题了。

解析需要引用Jar包:

  poi-3.9-20121203.jar;

poi-ooxml-schemas-3.9-20121203.jar

poi-ooxml-3.9-20121203.jar

poi-scratchpad-3.9-20121203.jar

xmlbeans-2.3.0.jar

stax-api-1.0.1.jar

dom4j-1.6.1.jar

Maven构建

org.apache.poi
poi
3.9


org.apache.poi
poi-ooxml
3.9


org.apache.poi
poi-scratchpad
3.9

如果只是解析2003版的话，包可以不加这么多。我这个是2003、2007版都可以解析的。

package wsc.com.it.excel;

import java.beans.PropertyDescriptor;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.regex.Pattern;


import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;


public class ExcelParseUtil {


@SuppressWarnings({ "unchecked", "unused" })
public static void main(String[] args) throws Exception {
ExcelParseUtil excelParse = new ExcelParseUtil();
String fileName = "parse.xlsx";
File file = new File(fileName);
String sheetName = "ExcleVO";
int beginRow = 1;
String strKeys = "username,password";//注意，一定要与Excel的标题相同，VO最好也相同
List excelList = new ArrayList();
excelList = (List) excelParse.importExcelFile(file, fileName,
sheetName, beginRow, ExcelVO.class, strKeys);



for (ExcelVO excelVO : excelList) {
System.out.println(excelVO.getUsername() +"     s"+excelVO.getPassword());

}
}


private static final int VERSION2003 = 2003;
private static final int VERSION2007 = 2007;
private int version = 2003;


// 解析并取得Excel文件 的数据
private List importExcelFile(File file, String fileName,
String sheetName, int beginRow, Class objClass, String strKeys)
throws Exception {
String[] strKey = strKeys.split(",");
Workbook workbook = getWbByInVserion(file, fileName);
Sheet sheet = workbook.getSheet(sheetName);
return getSheetData(sheet, beginRow, objClass, strKey);
}


// 获取Excel文件的版本
private Workbook getWbByInVserion(File file, String fileName) {
Workbook workbook = null;
InputStream stream = null;
if (".xls".equalsIgnoreCase(fileName.substring(fileName
.lastIndexOf(".")))) {
version = VERSION2003;
} else if (".xlsx".equalsIgnoreCase(fileName.substring(fileName
.lastIndexOf(".")))
|| ".xlsm".equalsIgnoreCase(fileName.substring(fileName
.lastIndexOf(".")))) {
version = VERSION2007;
} else {
System.out.println("文件格式不正确");
}


if (version == VERSION2003) {
try {
stream = new FileInputStream(file);
workbook = new HSSFWorkbook(stream);
} catch (IOException e1) {
System.out.println("文件没有找到");
}
} else if (version == VERSION2007) {
try {
stream = new FileInputStream(file);
workbook = new XSSFWorkbook(stream);
} catch (IOException e1) {
System.out.println("文件没有找到或者生成workWook有问题");
}
}


return workbook;
}


// 获取Sheet表中的数据
private List getSheetData(Sheet sheet, int beginRow, Class objClass,
String[] strKey) throws Exception {
List