POI 导出excel

package com.bj.export.excel;



import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.PrintSetup;
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;

/**
* A weekly timesheet created using Apache POI.
* @author DaiDai
*/
public class TimesheetDemo {

private static final String[] titles = {
         "ID", "栏目id", "日期", "频道", "标题", "预览地址", "类型", "作者", "PV点击量",
        
};

private static Object[][] sample_data = {
         {"Yegor Kozlov", "YK", 5.0, 8.0, 10.0, 5.0, 5.0, 7.0, 6.0},
         {"Gisella Bronzetti", "GB", 4.0, 3.0, 1.0, 3.5, null, null, 4.0},
};

public static void main(String[] args) throws Exception {
     Workbook wb;

     if(args.length > 0 && args[0].equals("-xls")) wb = new HSSFWorkbook();
     else wb = new XSSFWorkbook();

     Map<String, CellStyle> styles = createStyles(wb);

     Sheet sheet = wb.createSheet("Timesheet");
     PrintSetup printSetup = sheet.getPrintSetup();
     printSetup.setLandscape(true);
     sheet.setFitToPage(true);
     sheet.setHorizontallyCenter(true);


     //header row
     Row headerRow = sheet.createRow(0);
     headerRow.setHeightInPoints(40);
     Cell headerCell;
     for (int i = 0; i < titles.length; i++) {
         headerCell = headerRow.createCell(i);
         headerCell.setCellValue(titles[i]);
         headerCell.setCellStyle(styles.get("header"));
     }

     int rownum = 1;
     for (int i = 0; i < 10; i++) {
         Row row = sheet.createRow(rownum++);
         for (int j = 0; j < titles.length; j++) {
             Cell cell = row.createCell(j);
             cell.setCellStyle(styles.get("cell"));
         }
     }

     //row with totals below
     Row sumRow = sheet.createRow(rownum++);
     sumRow.setHeightInPoints(35);
    
    
     //set sample data
     for (int i = 0; i < sample_data.length; i++) {
         Row row = sheet.getRow(1 + i);
         for (int j = 0; j < sample_data[i].length; j++) {
             if(sample_data[i][j] == null) continue;

             if(sample_data[i][j] instanceof String) {
                 row.getCell(j).setCellValue((String)sample_data[i][j]);
             } else {
                 row.getCell(j).setCellValue((Double)sample_data[i][j]);
             }
         }
     }

     //finally set column widths, the width is measured in units of 1/256th of a character width
     sheet.setColumnWidth(0, 30*256); //30 characters wide
     for (int i = 2; i < 9; i++) {
         sheet.setColumnWidth(i, 6*256);  //6 characters wide
     }
     sheet.setColumnWidth(10, 10*256); //10 characters wide

     // Write the output to a file
     String file = "d:/Excel/timesheet.xls";
     if(wb instanceof XSSFWorkbook) file += "x";
     FileOutputStream out = new FileOutputStream(file);
     wb.write(out);
     out.close();
     System.out.println("success_success-----success");
}

/**
  * Create a library of cell styles
  */
private static Map<String, CellStyle> createStyles(Workbook wb){
     Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
     CellStyle style;
     Font titleFont = wb.createFont();
     titleFont.setFontHeightInPoints((short)18);
     titleFont.setBoldweight(Font.BOLDWEIGHT_BOLD);
     style = wb.createCellStyle();
     style.setAlignment(CellStyle.ALIGN_CENTER);
     style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
     style.setFont(titleFont);
     styles.put("title", style);

     Font monthFont = wb.createFont();
     monthFont.setFontHeightInPoints((short)11);
     monthFont.setColor(IndexedColors.WHITE.getIndex());
     style = wb.createCellStyle();
     style.setAlignment(CellStyle.ALIGN_CENTER);
     style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
     style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex());
     style.setFillPattern(CellStyle.SOLID_FOREGROUND);
     style.setFont(monthFont);
     style.setWrapText(true);
     styles.put("header", style);

     style = wb.createCellStyle();
     style.setAlignment(CellStyle.ALIGN_CENTER);
     style.setWrapText(true);
     style.setBorderRight(CellStyle.BORDER_THIN);
     style.setRightBorderColor(IndexedColors.BLACK.getIndex());
     style.setBorderLeft(CellStyle.BORDER_THIN);
     style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
     style.setBorderTop(CellStyle.BORDER_THIN);
     style.setTopBorderColor(IndexedColors.BLACK.getIndex());
     style.setBorderBottom(CellStyle.BORDER_THIN);
     style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
     styles.put("cell", style);

     style = wb.createCellStyle();
     style.setAlignment(CellStyle.ALIGN_CENTER);
     style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
     style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
     style.setFillPattern(CellStyle.SOLID_FOREGROUND);
     style.setDataFormat(wb.createDataFormat().getFormat("0.00"));
     styles.put("formula", style);

     style = wb.createCellStyle();
     style.setAlignment(CellStyle.ALIGN_CENTER);
     style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
     style.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
     style.setFillPattern(CellStyle.SOLID_FOREGROUND);
     style.setDataFormat(wb.createDataFormat().getFormat("0.00"));
     styles.put("formula_2", style);

     return styles;
}
}