将Excel生成实体类

package com.excel.test;

import java.util.List;

public class createUtil {

	public static String appendPrivate(List<String> types,List<String> attributes,List<String> mark){

		StringBuffer sb = new StringBuffer();

		if(types.size()==attributes.size()&&types.size()==mark.size()){

			for(int i=0;i<types.size();i++){

				sb.append(" 	/**\n");

				sb.append("	*"+mark.get(i)+"\n");

				sb.append("	*/\n");

				sb.append("	private "+types.get(i)+" "+attributes.get(i)+";\n\n");

			}

		}

		return sb.toString();

	}

	public static String getSet(List<String> types,List<String> attributes,List<String> mark){

		StringBuffer sb = new StringBuffer();

		if(types.size()==attributes.size()){

			for(int i=0;i<types.size();i++){

				String attribute = attributes.get(i);

				String c = String.valueOf(attribute.charAt(0));

                c = c.toUpperCase();

                attribute = c + attribute.substring(1);

                sb.append(" 	/**\n");

				sb.append("	* 设置"+mark.get(i)+"\n");

				sb.append("	* @param "+attributes.get(i)+" "+mark.get(i)+"\n");

				sb.append("	*/\n");

				sb.append("	public void set"+attribute+"("+types.get(i)+" "+attributes.get(i)+"){\n");

				sb.append("		this."+attributes.get(i)+" = "+attributes.get(i)+";\n");

				sb.append("	}\n\n");

				sb.append(" 	/**\n");

				sb.append("	*获得"+mark.get(i)+"\n");

				sb.append("	* @return "+attributes.get(i)+" "+mark.get(i)+"\n");

				sb.append("	*/\n");

				sb.append("	public "+types.get(i)+" get"+attribute+"(){\n");

				sb.append("		return "+attributes.get(i)+";\n");

				sb.append("	}\n\n");

			}

		}

		return sb.toString();

	}

}

package com.excel.test;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import org.apache.commons.io.FileUtils;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ReadExcel3 {

    public static void main(String[] args) throws IOException, InvalidFormatException {

        // TODO Auto-generated method stub

        File file = new File("D:\\user.xlsx");

        String fileName = file.getName();

        String className = "demo";

        File file1 = null;

         FileOutputStream fop = null;

        List<String> types = new ArrayList<String>();

        List<String> attributes = new ArrayList<String>();

        List<String> marks = new ArrayList<String>();

         if (fileName.endsWith("xlsx")){

             XSSFWorkbook workbooks = new XSSFWorkbook(file);

             XSSFSheet xssfSheet = workbooks.getSheetAt(0);

             int totalRows = xssfSheet.getPhysicalNumberOfRows();

             XSSFRow row = xssfSheet.getRow(0);

             className = row.getCell(0).getStringCellValue();

             System.out.println(className+"total:"+totalRows);

             for(int i=2;i<totalRows;i++){

                 XSSFRow row2 = xssfSheet.getRow(i);

                 attributes.add(row2.getCell(0).getStringCellValue());

                 types.add(row2.getCell(1).getStringCellValue());

                 marks.add(row2.getCell(2).getStringCellValue());

             }

         }else {

             HSSFWorkbook workbook = new HSSFWorkbook(FileUtils.openInputStream(file));

            //读取默认第一个工作表sheet

            HSSFSheet sheet = workbook.getSheetAt(0);

            int firstRowNum = 0;

            //获取sheet中最后一行行号

            int lastRowNum = sheet.getLastRowNum();

            HSSFRow row = sheet.getRow(firstRowNum);

            className = row.getCell(0).getStringCellValue();

            for (int i = 2; i <=lastRowNum; i++){

                HSSFRow row1 = sheet.getRow(i);

                attributes.add(row1.getCell(0).getStringCellValue());

                types.add(row1.getCell(1).getStringCellValue());

                marks.add(row1.getCell(2).getStringCellValue());

            }

        }

        StringBuffer sb = new StringBuffer();

        sb.append("public class "+className+"{\n\n");

        sb.append(createUtil.appendPrivate(types, attributes,marks));

        sb.append(createUtil.getSet(types, attributes,marks));

        sb.append("}");

        file1 = new File("d:/"+className+".java");

        fop = new FileOutputStream(file1);

        if (!file1.exists()) {

            file1.createNewFile();

        }

        byte[] contentInBytes = sb.toString().getBytes();

        fop.write(contentInBytes);

        fop.flush();

        fop.close();

        System.out.println("Done");

    }

}