java poi技术操作excel

import java.io.BufferedWriter;  
import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileWriter;  
import java.io.IOException;  
import java.io.InputStream;  
import java.text.SimpleDateFormat;  
  
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;  
  
public class ReadWriteExcel {  
  
    private static final String EXCEL_XLS = "xls";  
    private static final String EXCEL_XLSX = "xlsx";  
  
    /** 
     * 判断Excel的版本,获取Workbook 
     * @param in 
     * @param filename 
     * @return 
     * @throws IOException 
     */  
    public static Workbook getWorkbok(InputStream in,File file) throws IOException{  
        Workbook wb = null;  
        if(file.getName().endsWith(EXCEL_XLS)){  //Excel 2003  
            wb = new HSSFWorkbook(in);  
        }else if(file.getName().endsWith(EXCEL_XLSX)){  // Excel 2007/2010  
            wb = new XSSFWorkbook(in);  
        }  
        return wb;  
    }  
  
    /** 
     * 判断文件是否是excel 
     * @throws Exception  
     */  
    public static void checkExcelVaild(File file) throws Exception{  
        if(!file.exists()){  
            throw new Exception("文件不存在");  
        }  
        if(!(file.isFile() && (file.getName().endsWith(EXCEL_XLS) || file.getName().endsWith(EXCEL_XLSX)))){  
            throw new Exception("文件不是Excel");  
        }  
    }  
  
    /** 
     * 读取Excel测试，兼容 Excel 2003/2007/2010 
     * @throws Exception  
     */  
    public static void main(String[] args) throws Exception {  
        SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");  
        BufferedWriter bw = new BufferedWriter(new FileWriter(new File("E:/xxx/InsertSql.txt")));  
        try {  
            // 同时支持Excel 2003、2007  
            File excelFile = new File("E:/xxx.xlsx"); // 创建文件对象  
            FileInputStream is = new FileInputStream(excelFile); // 文件流  
            checkExcelVaild(excelFile);  
            Workbook workbook = getWorkbok(is,excelFile);  
            //Workbook workbook = WorkbookFactory.create(is); // 这种方式 Excel2003/2007/2010都是可以处理的  
  
            int sheetCount = workbook.getNumberOfSheets(); // Sheet的数量  
            /** 
             * 设置当前excel中sheet的下标：0开始 
             */  
            Sheet sheet = workbook.getSheetAt(0);   // 遍历第一个Sheet  
  
            // 为跳过第一行目录设置count  
            int count = 0;  
  
            for (Row row : sheet) {  
                // 跳过第一行的目录  
                if(count == 0){  
                    count++;  
                    continue;  
                }  
                // 如果当前行没有数据，跳出循环  
                if(row.getCell(0).toString().equals("")){  
                    return ;  
                }  
                String rowValue = "";  
                for (Cell cell : row) {  
                    if(cell.toString() == null){  
                        continue;  
                    }  
                    int cellType = cell.getCellType();  
                    String cellValue = "";  
                    switch (cellType) {  
                        case Cell.CELL_TYPE_STRING:     // 文本  
                            cellValue = cell.getRichStringCellValue().getString() + "#";  
                            break;  
                        case Cell.CELL_TYPE_NUMERIC:    // 数字、日期  
                            if (DateUtil.isCellDateFormatted(cell)) {  
                                cellValue = fmt.format(cell.getDateCellValue()) + "#";  
                            } else {  
                                cell.setCellType(Cell.CELL_TYPE_STRING);  
                                cellValue = String.valueOf(cell.getRichStringCellValue().getString()) + "#";  
                            }  
                            break;  
                        case Cell.CELL_TYPE_BOOLEAN:    // 布尔型  
                            cellValue = String.valueOf(cell.getBooleanCellValue()) + "#";  
                            break;  
                        case Cell.CELL_TYPE_BLANK: // 空白  
                            cellValue = cell.getStringCellValue() + "#";  
                            break;  
                        case Cell.CELL_TYPE_ERROR: // 错误  
                            cellValue = "错误#";  
                            break;  
                        case Cell.CELL_TYPE_FORMULA:    // 公式  
                            // 得到对应单元格的公式  
                            //cellValue = cell.getCellFormula() + "#";  
                            // 得到对应单元格的字符串  
                            cell.setCellType(Cell.CELL_TYPE_STRING);  
                            cellValue = String.valueOf(cell.getRichStringCellValue().getString()) + "#";  
                            break;  
                        default:  
                            cellValue = "#";  
                    }  
                    //System.out.print(cellValue);  
                    rowValue += cellValue;  
                }  
                writeSql(rowValue,bw);  
                System.out.println(rowValue);  
                System.out.println();  
            }  
            bw.flush();  
        } catch (Exception e) {  
            e.printStackTrace();  
        } finally{  
            bw.close();  
        }  
    }  
[java] view plain copy
// 将值拼成sql语句  
    public static void writeSql(String rowValue,BufferedWriter bw) throws IOException{  
        String[] sqlValue = rowValue.split("#");  
        String sql = "";  
        sql="INSERT INTO table_name (列名1) VALUES("+ sqlValue[0].trim() + ");"+"\n";  
        System.out.print(sql);  
        try {  
            bw.write(sql);  
            bw.newLine();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }