大家好,又见面了,我是你们的朋友全栈君。package com;
/**
*
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
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.xssf.usermodel.XSSFWorkbook;
import com.utils.CryptDESUtil;
/**
* @author qu
*/
public class Main {
private static SimpleDateFormat sdf=new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss”);
public static void main(String[] args) throws Exception {
//一下是创建新的Excel 参数
File directory = new File(“1234解密.xls”);
directory.getCanonicalPath(); //得到的是C:/test/abc
String path = directory.getAbsolutePath(); //得到的是执行程序所在的文件路径
//File filewrite=new File(“E:\\解密1234.xls”);
File filewrite=new File(path);
filewrite.createNewFile();
OutputStream os=new FileOutputStream(filewrite);
//创建工作薄
WritableWorkbook workbook = jxl.Workbook.createWorkbook(os);
//创建新的一页
WritableSheet newSheet = workbook.createSheet(“First Sheet”,0);
//一下是处理被机密的文件
Workbook wb =null;
Sheet sheet = null;
Row row = null;
List<Map<String,String>> list = null;
String cellData = null;
File directory2 = new File(“1234.xlsx”);
directory2.getCanonicalPath(); //得到的是C:/test/abc
String path2 = directory2.getAbsolutePath(); //得到的是C:/test/abc
//String filePath = “E:\\1234.xlsx”;
wb = readExcel(path2);
if(wb != null){
//用来存放表中数据
list = new ArrayList<Map<String,String>>();
//获取第一个sheet
sheet = wb.getSheetAt(0);
//获取最大行数
int rownum = sheet.getPhysicalNumberOfRows();
//获取第一行
row = sheet.getRow(0);
//获取最大列数
int colnum = row.getPhysicalNumberOfCells();
//打印行数和列数
//System.out.println(“rownum=”+rownum+”,colnum=”+colnum);
for (int i = 0; i<rownum; i++) {//遍历行数
row = sheet.getRow(i);
if(row !=null){
for (int j=0;j<colnum;j++){//遍历列
cellData = (String)getCellFormatValue(row.getCell(j));
//————
//前面参数是列,后面参数是行
String sss = CryptDESUtil.decodeDES(cellData);
Label newLabel = new Label(j,i,sss);//执行解密
newSheet.addCell(newLabel);
//————
}
}else{
break;
}
}
workbook.write();
workbook.close();
os.close();
}
System.out.println(“——–Success——–“);
}
//读取excel
public static Workbook readExcel(String filePath){
Workbook wb = null;
if(filePath==null){
return null;
}
String extString = filePath.substring(filePath.lastIndexOf(“.”));
InputStream is = null;
try {
is = new FileInputStream(filePath);
if(“.xls”.equals(extString)){
return wb = new HSSFWorkbook(is);
}else if(“.xlsx”.equals(extString)){
return wb = new XSSFWorkbook(is);
}else{
return wb = null;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return wb;
}
public static Object getCellFormatValue(Cell cell){
Object cellValue = null;
if(cell!=null){
//判断cell类型
switch(cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC:{
//判断cell是否为日期格式
if(DateUtil.isCellDateFormatted(cell)){
//转换为日期格式YYYY-mm-dd
cellValue = sdf.format(cell.getDateCellValue());
}else{
//数字
cellValue = String.valueOf(cell.getNumericCellValue());
}
break;
}
case Cell.CELL_TYPE_FORMULA:{
//判断cell是否为日期格式
if(DateUtil.isCellDateFormatted(cell)){
//转换为日期格式YYYY-mm-dd
cellValue = sdf.format(cell.getDateCellValue());
}else{
//数字
cellValue = String.valueOf(cell.getNumericCellValue());
}
break;
}
case Cell.CELL_TYPE_STRING:{
cellValue = cell.getRichStringCellValue().getString();
break;
}
default:
cellValue = “”;
}
}else{
cellValue = “”;
}
return cellValue;
}
}
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