POI 导出EXCEL

/**
* 样式设置
*/
public static HSSFCellStyle createCellStyle(HSSFWorkbook workbook){
// *生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
// 前景色
style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
// 背景色
style.setFillBackgroundColor(HSSFColor.GREEN.index);
// 填充样式
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
// 设置底边框
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
// 设置底边框颜色
style.setBottomBorderColor(HSSFColor.BLACK.index);
// 设置左边框
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
// 设置左边框颜色
style.setLeftBorderColor(HSSFColor.BLACK.index);
// 设置右边框
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
// 设置右边框颜色
style.setRightBorderColor(HSSFColor.BLACK.index);
// 设置顶边框
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
// 设置顶边框颜色
style.setTopBorderColor(HSSFColor.BLACK.index);
// 设置自动换行
style.setWrapText(false);
// 设置水平对齐的样式为居中对齐
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 设置垂直对齐的样式为居中对齐
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
//        HSSFFont font = createCellFont(workbook);
//        // 把字体应用到当前的样式
//        style.setFont(font);
return style;
}

/**
* 字体设置
*/
public static HSSFFont createCellFont(HSSFWorkbook workbook){
// *生成一个字体
HSSFFont font = workbook.createFont();
// 字体颜色
font.setColor(HSSFColor.VIOLET.index);
// 字体大小
font.setFontHeightInPoints((short) 12);
// 字体加粗
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 是否使用斜体
font.setItalic( true );
// 是否使用划线
//font.setStrikeout(true);
// 字体名字
font.setFontName( " 黑体 " );
return font;
}

/**
* 注释设置
*/
public static HSSFComment createCellComment(HSSFPatriarch patriarch, String commentText, String commentName){
// *添加单元格注释
// 定义注释的大小和位置,详见文档
HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short) 1, 1, (short) 2, 2));
// 设置注释内容
comment.setString(new HSSFRichTextString(commentText));
// 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容.
comment.setAuthor(commentName);
return comment;
}

/**
* 图片插入
*/
public static void createCellPicture(HSSFWorkbook workbook, HSSFPatriarch patriarch, String url, int col, int row) throws Exception{
//先把读进来的图片放到一个ByteArrayOutputStream中，以便产生ByteArray
BufferedImage bufferImg =null;
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
bufferImg = ImageIO.read(new File( url ));
ImageIO.write(bufferImg,"jpg",byteArrayOut);
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0,1023, 255, (short) col, row, (short) col, row);
anchor.setAnchorType(3);
//插入图片
patriarch.createPicture(anchor , workbook.addPicture(byteArrayOut.toByteArray(),HSSFWorkbook.PICTURE_TYPE_JPEG));
byteArrayOut.flush();
byteArrayOut.close();
}

/**
* 导出EXCEL
*/
public static void excel(List<Map<String, Object>> list, String[] head, String excelName,HttpServletResponse response ) throws Exception{
// 声明一个工作薄
HSSFWorkbook workbook = new HSSFWorkbook();
// 生成一个表格
HSSFSheet sheet = workbook.createSheet(excelName);
// 设置表格默认列宽度为20个字节
sheet.setDefaultColumnWidth(20);
// 字体设置
HSSFFont font = createCellFont(workbook);
// 样式设置
HSSFCellStyle style = createCellStyle(workbook);
// 把字体应用到当前的样式
style.setFont(font);
// 声明一个管理器,HSSFPatriarc
7ff0
h是所有注释的容器
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
// *产生表格标题行
// 创建行(row)
HSSFRow row = sheet.createRow(0);
HSSFComment comment = createCellComment(patriarch, "这是标题行", "123");
for (int i = 0; i < head.length; i++) {
// 创建单元格
HSSFCell cell = row.createCell(i);
// 获取内容
HSSFRichTextString text = new HSSFRichTextString(head[i]);
// 设置单元格内容
cell.setCellValue(text);
// 设置单元格样式
cell.setCellStyle(style);
// 指定单元格格式：数值、公式或字符串
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
// 添加注释
cell.setCellComment(comment);
}
// *遍历集合数据,产生表格数据行
for (int i=1, k=list.size()+1; i<k; i++) {
// 创建新行(row)
row = sheet.createRow(i);
// 设置行高
row.setHeightInPoints(60);
// 设置图片所在列宽度为80px,
sheet.setColumnWidth(i, (short)(35.7 * 80));
comment = createCellComment(patriarch, "这是数据行", "123");
for(int j =0;j<head.length;j++ ){
// 创建单元格
HSSFCell cell =row.createCell(j);
// 获取内容
Map<String , Object> map=(Map<String, Object>) list.get(i-1);
HSSFRichTextString text = new HSSFRichTextString(String.valueOf( map.get(String.valueOf(j)) ));
cell.setCellStyle(style);
cell.setCellValue(text);
cell.setCellComment(comment);
// 插图片(6为图片列)
// map.get(String.valueOf(j)).toString() 为图片绝对地址
if(j==6){
createCellPicture(workbook, patriarch, map.get(String.valueOf(j)).toString(), 6, i);
}
}
}
response.setContentType("applicationnd.ms-excel");
String fileName = new String(excelName.getBytes("gb2312"),"ISO-8859-1");
response.setHeader("Content-disposition", "attachment; filename="+fileName+".xls");
workbook.write(response.getOutputStream());
response.getOutputStream().flush();
response.getOutputStream().close();
}

//方法调用
public void excelTest(){
try {
List<User> list = userService.queryUserTest();
List<Map<String, Object>> listBody = new ArrayList<Map<String, Object>>();
for(User user:list){
Map<String,Object> map = new HashMap<String, Object>();
map.put("0", user.getUserId());
map.put("1", user.getUserName());
map.put("2", user.getTrueName());
map.put("3", user.getPassWord());
map.put("4", user.getDeptName());
map.put("5", user.getJob());
map.put("6", user.getUrl());
listBody.add(map);
}
HttpServletResponse response = ServletActionContext.getResponse();
String[] head ={"ID","用户名","真实姓名","密码","部门","工作","url"};
ExcelUtil.excel2(listBody, head, "EXCEL", response);
} catch (Exception e) {
e.printStackTrace();
}
}