关于java读取excle文件的相关方法 ；

1.读取Excle文件内容的方法 拿过来可以直接用 ；

2.参照 http://www.anyrt.com/blog/list/importexcel.html#6

更多知识请参考：http://www.anyrt.com/blog/index.html

说明：本次中使用的jra包有：POI3.9

 package Demo;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.List;
 import org.apache.poi.hssf.usermodel.HSSFPicture;
 import org.apache.poi.hssf.usermodel.HSSFPictureData;
 import org.apache.poi.hssf.usermodel.HSSFShape;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 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.xssf.usermodel.XSSFSheet;
 import org.apache.poi.xssf.usermodel.XSSFWorkbook;

 public class ExcleXlsxDemo {
 /**
  *
  *
  */
     public void xlsxTypeExcle(String filePath) {
         // File excelFile = new File("/Users/mike/table.xlsx");
         File excelFile = new File(filePath);
         XSSFWorkbook wb;
         try {
             wb = new XSSFWorkbook(new FileInputStream(excelFile));
             XSSFSheet sheet = wb.getSheetAt(0);
             for (Row row : sheet) {
                 for (Cell cell : row) {
                     switch (cell.getCellType()) {
                     case Cell.CELL_TYPE_STRING:
                         System.out.print(cell.getRichStringCellValue().getString());
                         System.out.print("|");
                         break;
                     case Cell.CELL_TYPE_NUMERIC:
                         if (DateUtil.isCellDateFormatted(cell)) {
                             System.out.print(String.valueOf(cell.getDateCellValue()));
                         } else {
                             System.out.print(cell.getNumericCellValue());
                         }
                         System.out.print("|");
                         break;
                     case Cell.CELL_TYPE_BOOLEAN:
                         System.out.print(cell.getBooleanCellValue());
                         System.out.print("|");
                         break;
                     default:
                     }
                 }
                 System.out.println();
             }
         } catch (FileNotFoundException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }

     /**
      *
      * 读取xls格式的excle
      *
      * @param args
      * @throws IOException
      * @throws FileNotFoundException
      * @throws Exception
      */
     @SuppressWarnings("deprecation")
     public void xlsTypeExcle(String filePath) throws FileNotFoundException, IOException {
         // File excelFile = new File("/Users/mike/table5.xls");
         File xlsExcelFile = new File(filePath);
         HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(xlsExcelFile));
         HSSFSheet sheet = wb.getSheetAt(0);
         System.out.println("***************"+filePath+" 的内容如下：");
         for (Row row : sheet) {
             for (Cell cell : row) {
                 switch (cell.getCellType()) {
                 case Cell.CELL_TYPE_STRING:
                     System.out.print(cell.getRichStringCellValue().getString());
                     System.out.print("|");
                     break;
                 case Cell.CELL_TYPE_NUMERIC:
                     if (DateUtil.isCellDateFormatted(cell)) {
                         System.out.print(String.valueOf(cell.getDateCellValue()));
                     } else {
                         System.out.print(cell.getNumericCellValue());
                     }
                     System.out.print("|");
                     break;
                 case Cell.CELL_TYPE_BOOLEAN:
                     System.out.print(cell.getBooleanCellValue());
                     System.out.print("|");
                     break;
                 default:
                 }
             }
             System.out.println();
         }

     }

     public static void main(String[] args) {
         ExcleXlsxDemo xlsx =new ExcleXlsxDemo();
         String xlsx_Excle ="D:\\2007Text.xlsx";
         String xls_excle="D:\\2003table5.xls";
         try {
             xlsx.xlsTypeExcle(xls_excle);
             xlsx.xlsxTypeExcle(xlsx_Excle);
         } catch (FileNotFoundException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }

     }

 }

Java POI读取excel 支持xls、xlsx

报表存在读取数据源来自excel，系统常常出现读取excel需求，Java POI不仅可以输出excel，也可以读取excel中单元格数据、图片数据，poi也支持excel2007（xlsx）读取，使用poi-3.8-20120326.jar,poi-ooxml-3.8-20120326.jar,poi-scratchpad-3.8-20120326.jar，这些Jar包可以从apache poi获取

关于2003-2007版本Excle单元格读取

File excelFile = new File("/Users/mike/table5.xls");
HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(excelFile));
HSSFSheet sheet = wb.getSheetAt(0);

for (Row row : sheet) {
    for (Cell cell : row) {
        switch (cell.getCellType()) {
        case Cell.CELL_TYPE_STRING://字符串
            System.out.print(cell.getRichStringCellValue().getString());
            System.out.print("|");
            break;
        case Cell.CELL_TYPE_NUMERIC://数值与日期
            if (DateUtil.isCellDateFormatted(cell)) {
                System.out.print(String.valueOf(cell.getDateCellValue()));
            } else {
                System.out.print(cell.getNumericCellValue());
            }
            System.out.print("|");
            break;
        case Cell.CELL_TYPE_BOOLEAN://boolean类型
            System.out.print(cell.getBooleanCellValue());
            System.out.print("|");
            break;
        default:
        }
    }
    System.out.println();

图片读取

先获取excel所有的图片，再查询pictureIndex 根据pictureIndex获取对应的图片

//读取图片
List<HSSFPictureData> pictures = wb.getAllPictures(); 
for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) { 
    if (shape instanceof HSSFPicture) {
        HSSFPicture pic = (HSSFPicture) shape; 
        int pictureIndex = pic.getPictureIndex()-1; 
        HSSFPictureData picData = pictures.get(pictureIndex);
        System.out.println("image-size:" + picData.getData().length);
    } 
}  

读取sheet名称

wb.getSheetName(0)

整个实例

import java.io.File;
import java.io.FileInputStream;
import java.util.List;
 
import org.apache.poi.hssf.usermodel.HSSFPicture;
import org.apache.poi.hssf.usermodel.HSSFPictureData;
import org.apache.poi.hssf.usermodel.HSSFShape;
import org.apache.poi.hssf.usermodel.HSSFSheet;
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;
 
public final class TestImportExcel {
 
    public static void main(String[] args) throws Exception  {
 
        File excelFile = new File("/Users/mike/table5.xls");
        HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(excelFile));
        HSSFSheet sheet = wb.getSheetAt(0);
 
        for (Row row : sheet) {
            for (Cell cell : row) {
                switch (cell.getCellType()) {
                case Cell.CELL_TYPE_STRING:
                    System.out.print(cell.getRichStringCellValue().getString());
                    System.out.print("|");
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    if (DateUtil.isCellDateFormatted(cell)) {
                        System.out.print(String.valueOf(cell.getDateCellValue()));
                    } else {
                        System.out.print(cell.getNumericCellValue());
                    }
                    System.out.print("|");
                    break;
                case Cell.CELL_TYPE_BOOLEAN:
                    System.out.print(cell.getBooleanCellValue());
                    System.out.print("|");
                    break;
                default:
                }
            }
            System.out.println();
        }
         
        //读取图片
        List<HSSFPictureData> pictures = wb.getAllPictures(); 
        for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) { 
            if (shape instanceof HSSFPicture) {
                HSSFPicture pic = (HSSFPicture) shape; 
                int pictureIndex = pic.getPictureIndex()-1; 
                HSSFPictureData picData = pictures.get(pictureIndex);
                System.out.println("image-size:" + picData.getData().length);
            } 
        } 
         
        System.out.println(wb.getSheetName(0));
    }
}

xlsx读取单元格

xlsx读取大概与xls读取相类似，xlsx采用是X开头的类，采用的是XSSFWorkbook ；

File excelFile = new File("/Users/mike/table.xlsx");
XSSFWorkbook wb = new XSSFWorkbook(new FileInputStream(excelFile));
XSSFSheet sheet = wb.getSheetAt(0);
 
for (Row row : sheet) {
    for (Cell cell : row) {
        switch (cell.getCellType()) {
        case Cell.CELL_TYPE_STRING:
            System.out.print(cell.getRichStringCellValue().getString());
            System.out.print("|");
            break;
        case Cell.CELL_TYPE_NUMERIC:
            if (DateUtil.isCellDateFormatted(cell)) {
                System.out.print(String.valueOf(cell.getDateCellValue()));
            } else {
                System.out.print(cell.getNumericCellValue());
            }
            System.out.print("|");
            break;
        case Cell.CELL_TYPE_BOOLEAN:
            System.out.print(cell.getBooleanCellValue());
            System.out.print("|");
            break;
        default:
        }
    }
    System.out.println();
}

xlsx读取图片

xlsx读取图片直接获取所有的图片，然后遍历图片获取图片数据

//读取图片
List<XSSFPictureData> pictures = wb.getAllPictures(); 
for (int i = 0; i < pictures.size(); i++) {
    XSSFPictureData pictureData = pictures.get(i);
    byte[] picData = pictureData.getData();
    System.out.println("image-size:" + picData.length);
 }

xlsx示例

import java.io.File;
import java.io.FileInputStream;
import java.util.List;
 
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.xssf.usermodel.XSSFPictureData;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 
public final class TestImportXlsx {
 
    public static void main(String[] args) throws Exception  {
 
        File excelFile = new File("/Users/mike/table.xlsx");
        XSSFWorkbook wb = new XSSFWorkbook(new FileInputStream(excelFile));
        XSSFSheet sheet = wb.getSheetAt(0);
 
        for (Row row : sheet) {
            for (Cell cell : row) {
                switch (cell.getCellType()) {
                case Cell.CELL_TYPE_STRING:
                    System.out.print(cell.getRichStringCellValue().getString());
                    System.out.print("|");
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    if (DateUtil.isCellDateFormatted(cell)) {
                        System.out.print(String.valueOf(cell.getDateCellValue()));
                    } else {
                        System.out.print(cell.getNumericCellValue());
                    }
                    System.out.print("|");
                    break;
                case Cell.CELL_TYPE_BOOLEAN:
                    System.out.print(cell.getBooleanCellValue());
                    System.out.print("|");
                    break;
                default:
                }
            }
            System.out.println();
        }
         
        //读取图片
        List<XSSFPictureData> pictures = wb.getAllPictures(); 
        for (int i = 0; i < pictures.size(); i++) {
            XSSFPictureData pictureData = pictures.get(i);
            byte[] picData = pictureData.getData();
            System.out.println("image-size:" + picData.length);
         }
        System.out.println(wb.getSheetName(0));
    }
}