借助于apathe的poi.jar，由于上传文件不支持.jar所以请下载后将文件改为.jar，在应用程序中添加poi.jar包，并将需要读取的excel文件放入根目录即可
本例使用java来读取excel的内容并展出出结果，代码如下：
importjava.io.BufferedInputStream;
importjava.io.File;
importjava.io.FileInputStream;
importjava.io.FileNotFoundException;
importjava.io.IOException;
importjava.text.DecimalFormat;
importjava.text.SimpleDateFormat;
importjava.util.ArrayList;
importjava.util.Arrays;
importjava.util.Date;
importjava.util.List;
importorg.apache.poi.hssf.usermodel.HSSFCell;
importorg.apache.poi.hssf.usermodel.HSSFDateUtil;
importorg.apache.poi.hssf.usermodel.HSSFRow;
importorg.apache.poi.hssf.usermodel.HSSFSheet;
importorg.apache.poi.hssf.usermodel.HSSFWorkbook;
importorg.apache.poi.poifs.filesystem.POIFSFileSystem;
publicclassExcelOperate {
publicstaticvoidmain(String[] args)throwsException {
File file =newFile("ExcelDemo.xls");
String[][] result =getData(file, 1);
introwLength = result.length;
for(inti=0;i<rowLength;i++) {
for(intj=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
*@paramfile读取数据的源Excel
*@paramignoreRows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
*@throwsFileNotFoundException
*@throwsIOException
*/
publicstaticString[][] getData(File file,intignoreRows)
throwsFileNotFoundException, IOException {
List<String[]> result =newArrayList<String[]>();
introwSize = 0;
BufferedInputStream in =newBufferedInputStream(newFileInputStream(
file));
//打开HSSFWorkbook
POIFSFileSystem fs =newPOIFSFileSystem(in);
HSSFWorkbook wb =newHSSFWorkbook(fs);
HSSFCell cell =null;
for(intsheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) {
HSSFSheet st = wb.getSheetAt(sheetIndex);
//第一行为标题，不取
for(introwIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++) {
HSSFRow row = st.getRow(rowIndex);
if(row ==null) {
continue;
}
inttempRowSize = row.getLastCellNum() + 1;
if(tempRowSize > rowSize) {
rowSize = tempRowSize;
}
String[] values =newString[rowSize];
Arrays.fill(values,"");
booleanhasValue =false;
for(shortcolumnIndex = 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()) {
caseHSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
caseHSSFCell.CELL_TYPE_NUMERIC:
if(HSSFDateUtil.isCellDateFormatted(cell)) {
Date date = cell.getDateCellValue();
if(date !=null) {
value =newSimpleDateFormat("yyyy-MM-dd")
.format(date);
}else{
value ="";
}
}else{
value =newDecimalFormat("0").format(cell
.getNumericCellValue());
}
break;
caseHSSFCell.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;
caseHSSFCell.CELL_TYPE_BLANK:
break;
caseHSSFCell.CELL_TYPE_ERROR:
value ="";
break;
caseHSSFCell.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);
}
}
}
in.close();
String[][] returnArray =newString[result.size()][rowSize];
for(inti = 0; i < returnArray.length; i++) {
returnArray[i] = (String[]) result.get(i);
}
returnreturnArray;
}
/**
*去掉字符串右边的空格
*@paramstr要处理的字符串
*@return处理后的字符串
*/
publicstaticString rightTrim(String str) {
if(str ==null) {
return"";
}
intlength = str.length();
for(inti = length – 1; i >= 0; i–) {
if(str.charAt(i) != 0x20) {
break;
}
length–;
}
returnstr.substring(0, length);
}
}
告诉自己，我这次失败了，
