java 用poi框架读取excel 2010

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java 用poi框架读取excel 2010

1、下载 最新的 poi   .html      

2、解压 把相关jar包引进项目 ,excel 2010 用的是 XSSH 开头的相关包，相关的类在 名称包含OOXML的相关jar包内。
3、下面是一个简单的例子       import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; 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.HSSFDateUtil; 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 Excel2010Operation {
public static void main(String[] args) throws Exception {
// File file = new File("src\\excelResourceFile\\privilege.xlsx"); File file = new File("src\\excelUserFile\\excelUserFile.xlsx");
Excel2010Operation excel = new Excel2010Operation();
List> workBook = excel.getData(file,"all", 0);
for (List sheet : workBook) { for (String[] row : sheet) { for (int col = 0; col < row.length; col++) {
System.out.print(row[col] + "\t"); } System.out.println(); }
System.out.println(); System.out.println("……………… one sheet read end …………………………………"); System.out.println();
} }
//ignoreRows 表示读取某个表时，忽略的行数。 public List> getData(File file,String privilegeType,int ignoreRows)
throws FileNotFoundException, IOException {
List> sheets = new ArrayList>();// 一个list存储一个工作簿
BufferedInputStream in = new BufferedInputStream(new FileInputStream(
file));
XSSFWorkbook workbook = new XSSFWorkbook(in);
// start read a sheet sheets = this.getWorkBook(workbook, privilegeType, ignoreRows); // end read a sheet
in.close(); return sheets;
}
// start 获取excle 一个 工作簿(workBook)的记录 public List> getWorkBook(XSSFWorkbook workbook,String privilegeType, int ignoreRows) {
// 一个list存储一个工作簿 List> sheets = new ArrayList>();
for (int sheetIndex = 0; sheetIndex < workbook.getNumberOfSheets(); sheetIndex++) {
List result = new ArrayList();// 一个list存储一个sheet的所有行
XSSFSheet sheet = workbook.getSheetAt(sheetIndex); String sheetName=sheet.getSheetName(); //获取sheet的名字 if("ALL".equalsIgnoreCase(privilegeType)){} else if(!sheetName.equalsIgnoreCase(privilegeType) ){ continue; } //System.out.println(sheetName);
// 获取表格，ignoreRows为忽略的行数；
result = getExcelSheet(sheet, ignoreRows); sheets.add(result); }
return sheets; }
// end 获取excle 一个 工作簿(workBook)的记录
// start 获取excle 一个表(sheet)的记录 public List getExcelSheet(XSSFSheet xssfSheet, int ignoreRows) { XSSFSheet sheet = xssfSheet;
// 一个list存储一个workBook的所有行 List result = new ArrayList(); for (int rowIndex = ignoreRows; rowIndex <= sheet.getLastRowNum(); rowIndex++) { XSSFRow row = sheet.getRow(rowIndex); if (row == null) {
                        continue;                         } String values[] = getExcelRole(row);
result.add(values); }
return result; }
// end 获取excle 一个表(sheet)的记录
// start 获取excle 一行的记录 public String[] getExcelRole(XSSFRow xSSFRow) {
XSSFRow row = xSSFRow; int rowSize = 0; XSSFCell cell = null;
if (row == null) {                 System.out.println("空空"); return null;
}
int tempRowSize = row.getLastCellNum() + 1;// 获取列数
if (tempRowSize > rowSize) {
rowSize = tempRowSize;// 获取列数
}
String[] values = new String[rowSize];// values store a row 's all // column value; Arrays.fill(values, "");
boolean hasValue = false;
// start all column for a row
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_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 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_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] = this.rightTrim(value);
hasValue = true;
}
return values; }
// end 获取excle 一行的记录

public 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);
}
}         

本文标签： java 用poi框架读取excel 2010