项目开发中遇到了解析Excel的问题，顺利完成了测试发现office2003跟office2007有报错，网上找了一些资料，
package com.gts.admin.upload.services;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
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.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelOperate
{
public static void main(String[] args) throws Exception
{
File file = new File("C:\\wwww.xls");
// File file = new File("C:\\test.xls");
String[][] result = getData(file,1);
int rowLength = result.length;
for (int i = 0; i < rowLength; i++)
{
for (int j = 0; j < result[i].length; j++)
{
System.out.print(result[i][j] + "\t\t");
}
System.out.println();
}
}
/**
*
* 读取Excel的内容，第一维数组存储的是一行中格列的值，二维数组存储的是多少个行
*
* @param file
* 读取数据的源Excel
*
* @param ignoreRows
* 读取数据忽略的行数，比喻行头不需要读入 忽略的行数为1
*
* @return 读出的Excel中数据的内容
*
* @throws FileNotFoundException
*
* @throws IOException
*
*/
public static String[][] getData(File file, int ignoreRows)
throws FileNotFoundException, IOException
{
int rowSize = 0;
// 打开HSSFWorkbook
List<String[]> result = new ArrayList<String[]>();
// String outputFile = output2File(in);
Workbook wb = null;
InputStream in = null;
try
{
in = new FileInputStream(file);
wb = new XSSFWorkbook(in);
result = getXSSFResult(wb, ignoreRows);
} catch (Exception ex)
{
in = new FileInputStream(file);
wb = new HSSFWorkbook(in);
result = getHSSFResult(wb, ignoreRows);
}
//哈哈，原来已经提供了一个很优雅的方法
Workbook wb = WorkbookFactory.create(in);
try
{
System.out.println(wb instanceof XSSFWorkbook);
if(wb instanceof XSSFWorkbook)
{
// wb = new XSSFWorkbook(in);
result = getXSSFResult(wb, ignoreRows);
}
else if(wb instanceof HSSFWorkbook)
{
// wb = new HSSFWorkbook(in);
result = getHSSFResult(wb, ignoreRows);
}
in.close();
String[][] returnArray = new String[result.size()][rowSize];
for (int i = 0; i < returnArray.length; i++)
{
returnArray[i] = (String[]) result.get(i);
}
return returnArray;
}
private static List<String[]> getXSSFResult(Workbook wb, int ignoreRows)
{
List<String[]> result = new ArrayList<String[]>();
XSSFCell cell = null;
int rowSize = 0;
for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++)
{
XSSFSheet st = (XSSFSheet) wb.getSheetAt(sheetIndex);
// 第一行为标题，不取
for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++)
{
XSSFRow row = st.getRow(rowIndex);
if (row == null)
{
continue;
}
int tempRowSize = row.getLastCellNum() + 1;
if (tempRowSize > rowSize)
{
rowSize = tempRowSize;
}
String[] values = new String[rowSize];
Arrays.fill(values, "");
boolean hasValue = false;
for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++)
{
String value = "";
cell = row.getCell(columnIndex);
if (cell != null)
{
// 注意：一定要设成这个，否则可能会出现乱码
// cell.setEncoding(HSSFCell.ENCODING_UTF_16);
switch (cell.getCellType())
{
case XSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
case XSSFCell.CELL_TYPE_FORMULA:
// 导入时如果为公式生成的数据则无值
if (!cell.getStringCellValue().equals(""))
{
value = cell.getStringCellValue();
} else
{
value = cell.getNumericCellValue() + "";
}
break;
case XSSFCell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell))
{
Date date = cell.getDateCellValue();
if (date != null)
{
value = new SimpleDateFormat("yyyy/MM/dd")
.format(date);
} else
{
value = "";
}
} else
{
value = new DecimalFormat("0").format(cell
.getNumericCellValue());
}
break;
case XSSFCell.CELL_TYPE_BLANK:
break;
case XSSFCell.CELL_TYPE_ERROR:
value = "";
break;
case XSSFCell.CELL_TYPE_BOOLEAN:
value = (cell.getBooleanCellValue() == true ? "Y"
: "N");
break;
default:
value = "";
}
}
if (columnIndex == 0 && value.trim().equals(""))
{
break;
}
values[columnIndex] = rightTrim(value);
hasValue = true;
}
if (hasValue)
{
result.add(values);
}
}
}
return result;
}
private static List<String[]> getHSSFResult(Workbook wb, int ignoreRows)
{
List<String[]> result = new ArrayList<String[]>();
HSSFCell cell = null;
int rowSize = 0;
for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++)
{
HSSFSheet st = (HSSFSheet) wb.getSheetAt(sheetIndex);
// 第一行为标题，不取
for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++)
{
HSSFRow row = st.getRow(rowIndex);
if (row == null)
{
continue;
}
int tempRowSize = row.getLastCellNum() + 1;
if (tempRowSize > rowSize)
{
rowSize = tempRowSize;
}
String[] values = new String[rowSize];
Arrays.fill(values, "");
boolean hasValue = false;
for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++)
{
String value = "";
cell = row.getCell(columnIndex);
if (cell != null)
{
// 注意：一定要设成这个，否则可能会出现乱码
// cell.setEncoding(HSSFCell.ENCODING_UTF_16);
switch (cell.getCellType())
{
case HSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell))
{
Date date = cell.getDateCellValue();
if (date != null)
{
value = new SimpleDateFormat("yyyy-MM-dd")
.format(date);
} else
{
value = "";
}
} else
{
value = new DecimalFormat("0").format(cell
.getNumericCellValue());
}
break;
case HSSFCell.CELL_TYPE_FORMULA:
// 导入时如果为公式生成的数据则无值
if (!cell.getStringCellValue().equals(""))
{
value = cell.getStringCellValue();
} else
{
value = cell.getNumericCellValue() + "";
}
break;
case HSSFCell.CELL_TYPE_BLANK:
break;
case HSSFCell.CELL_TYPE_ERROR:
value = "";
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
value = (cell.getBooleanCellValue() == true ? "Y"
: "N");
break;
default:
value = "";
}
}
if (columnIndex == 0 && value.trim().equals(""))
{
break;
}
values[columnIndex] = rightTrim(value);
hasValue = true;
}
if (hasValue)
{
result.add(values);
}
}
}
return result;
}
private static final String TEMP_FILE_NAME = "temp";
// private String output2File(InputStream streamIn) throws IOException
// {
// String dir = getServletPath()+TEMP_FILE_NAME;
// // 上传的路径+文件名
// File uploadFile = new File(dir);
// if (!uploadFile.exists() || uploadFile == null)
// { // 判断指定路径dir是否存在，不存在则创建路径
// uploadFile.mkdirs();
// }
// // OutputStream用于向某个目标写入字节的抽象类，这个地方写入目标是path，通过输出流FileOutputStream去写
// String path = dir+"\\temp.xls";
// OutputStream streamOut = new FileOutputStream(path);
// int bytesRead = 0;
// byte[] buffer = new byte[8192];
// // 将数据读入byte数组的一部分，其中读入字节数的最大值是8192，读入的字节将存储到，buffer[0]到buffer[0+8190-1]的部分中
// // streamIn.read方法返回的是实际读取字节数目.如果读到末尾则返回-1.如果bytesRead返回为0则表示没有读取任何字节。
// while ((bytesRead = streamIn.read(buffer, 0, 8192)) != -1)
// {
// // 写入buffer数组的一部分，从buf[0]开始写入并写入bytesRead个字节，这个write方法将发生阻塞直至字节写入完成。
// streamOut.write(buffer, 0, bytesRead);
// }
// // 关闭输出输入流,销毁File流。
// streamOut.close();
// streamIn.close();
// return path;
// }
// private String getServletPath()
// {
// String url = this.getClass().getResource("/").getPath();
// return url;
// }
/**
*
* 去掉字符串右边的空格
*
* @param str
* 要处理的字符串
*
* @return 处理后的字符串
*
*/
public static String rightTrim(String str)
{
if (str == null)
{
return "";
}
int length = str.length();
for (int i = length - 1; i >= 0; i--)
{
if (str.charAt(i) != 0x20)
{
break;
}
length--;
}
return str.substring(0, length);
}
}