public class ExportAsExcel {java
final Logger logger = LoggerFactory.getLogger(getClass());數據庫
static SimpleDateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");ide
/**ui
* 公共組件,導出Excel表格數據方法<p>spa
* 使用方法: 數據爲List<Object>類型,注意當中object的屬性理論上必須爲java基本數據類型excel
* 固然也支持像日期這種格式,即完整支持數據庫中字段類型orm
* @author peryget
* @param className 數據模型Object的類完整名稱it
* ,eg:com.swust.kelab.Departmentio
* @param propertyName 數據模型類的屬性對應的列名,
* 如「depaId」對應列表「機構id「,
* 未指定列名的屬性不會被導出
* @param tableName 導出的excel中的表名稱
* @param record 導出的文件絕對路徑(必須爲存在的文件,在本方法中沒有作文件路徑檢查)
* @param objectList 要導出的數據集
* @return 成功返回true,失敗返回false;
*/
public static boolean exportExcel(String className,Map propertyName,String tableName,File record,List<? extends Object> objectList){
HSSFWorkbook wbook = new HSSFWorkbook();
HSSFSheet wsheet = wbook.createSheet(tableName); //表名
HSSFCellStyle cellStyle=getStyle(wbook);
// 設置Excel表頭
HSSFRow excelTitle = wsheet.createRow(0);
excelTitle.setHeightInPoints(22);
if(objectList.size()<=0){
wsheet.autoSizeColumn(0);
HSSFCell titleCell = excelTitle.createCell(0);
titleCell.setCellValue("對不起,沒有可用數據導出");
titleCell.setCellStyle(cellStyle);
}
Class c = null;
try {
c = Class.forName(className);
}
catch (ClassNotFoundException e1) {
System.out.println("穿入反射用到的類名字有誤");
e1.printStackTrace();
return false;
}http://www.huiyi8.com/moban/ 網頁模板
java.lang.reflect.Field[] flds = c.getDeclaredFields();
int j=0;
for (int i = 0; i < flds.length; i++) {
String columName=flds[i].getName();
if(propertyName.containsKey(columName)){
wsheet.setColumnWidth(j+1, (int)(100*35.7));
HSSFCell titleCell = excelTitle.createCell(j++);
titleCell.setCellValue((String)propertyName.get(columName));
titleCell.setCellStyle(cellStyle);
}
}
for (int i = 0; i < objectList.size(); i++) {
Object obj = objectList.get(i);
HSSFRow row = wsheet.createRow(i + 1);
int k=0;
for (j = 0; j < flds.length; j++) {
String columName=flds[j].getName();
if(!propertyName.containsKey(columName)){
continue;
}
HSSFCell hssfCell = row.createCell(k++);
try {
flds[j].setAccessible(true);
Object t = flds[j].get(obj);
if(t instanceof Date){
t = dateFormat.format(t);
}
if(t!=null){
hssfCell.setCellValue(String.valueOf(t));
}
} catch (IllegalArgumentException e) {
System.out.println("該字段不是基本數據格式字段");
e.printStackTrace();
} catch (IllegalAccessException e) {
System.out.println("非法訪問");
e.printStackTrace();
try {
FileOutputStream fOut = new FileOutputStream(record);
wbook.write(fOut);
fOut.flush();
fOut.close();
} catch (FileNotFoundException e) {
System.out.println("文件路徑錯誤");
e.printStackTrace();
} catch (IOException e) {
System.out.println("I/O錯誤");
e.printStackTrace();
}
return true;
* Excel表格格式屬性調整
* @param wbook
* @return
*/
private static HSSFCellStyle getStyle(HSSFWorkbook wbook){
HSSFCellStyle cellStyle = wbook.createCellStyle();
cellStyle.setBorderLeft(HSSFCellStyle.BORDER_DOUBLE);
cellStyle.setBorderRight(HSSFCellStyle.BORDER_DOUBLE);
cellStyle.setBorderTop(HSSFCellStyle.BORDER_DOUBLE);
cellStyle.setBorderBottom(HSSFCellStyle.BORDER_DOUBLE);
HSSFFont font = wbook.createFont();
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
cellStyle.setFont(font);
return cellStyle;
}