package com.hrms.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.stereotype.Component;
@Component("poiExport")
public class PoiExport {
public InputStream exportExcel(String fileName, String[] headTitle,
List<String> list) throws IOException {
Workbook wb = new HSSFWorkbook();
//FileOutputStream fileOut = new FileOutputStream(fileName);
HSSFCellStyle style = (HSSFCellStyle) wb.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 生成一个字体
HSSFFont font = (HSSFFont) wb.createFont();
font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
// 创建工作簿
Sheet sheet = wb.createSheet("sheet1");
// sheet.setDefaultColumnWidth((short)15);
// 创建头部
Row row = sheet.createRow((short) 0);
for (int i = 0; i < headTitle.length; i++) {
row.createCell(i).setCellValue(headTitle[i]);
}
// 填充数据
for (int i = 0; i < list.size(); i++) {
Row r = sheet.createRow((short) (i + 1));
String[] strArray = list.get(i).split(",");
for (int j = 0; j < headTitle.length; j++) {
r.createCell(j).setCellValue(strArray[j]);
if (strArray[j].length()>3) {
sheet.setColumnWidth((short)j, 5000);
}
}
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
wb.write(baos);
} catch (IOException e) {
e.printStackTrace();
}
byte[] ba = baos.toByteArray();
ByteArrayInputStream excelStream = new ByteArrayInputStream(ba);
return excelStream;
}
/*
* public void exportExcel(Collection<T> dataset, OutputStream out) {
*
* }
*/
/*
* public void exportExcel(String[] headers, Collection<T>
* dataset,OutputStream out,String pattern) {
*
* HSSFWorkbook workbook = new HSSFWorkbook();
*
* // 生成一个表格
*
* HSSFSheet sheet = workbook.createSheet("系统日志");
*
* // 设置表格默认列宽度为15个字节
*
* //sheet.setDefaultColumnWidth((short) 15); // 生成一个样式
*
* HSSFCellStyle style = workbook.createCellStyle();
*
* // 设置这些样式
*
* style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
*
* style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
*
* style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
*
* style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
*
* style.setBorderRight(HSSFCellStyle.BORDER_THIN);
*
* style.setBorderTop(HSSFCellStyle.BORDER_THIN);
*
* style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
*
* // 生成一个字体
*
* HSSFFont font = workbook.createFont();
*
* font.setColor(HSSFColor.VIOLET.index);
*
* font.setFontHeightInPoints((short) 12);
*
* font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
*
* // 把字体应用到当前的样式
*
* style.setFont(font);
*
* // 生成并设置另一个样式
*
* HSSFCellStyle style2 = workbook.createCellStyle();
*
* style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
*
* style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
*
* style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
*
* style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
*
* style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
*
* style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
*
* style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
*
* style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
*
* // 生成另一个字体
*
* HSSFFont font2 = workbook.createFont();
*
* font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
*
* // 把字体应用到当前的样式
*
* style2.setFont(font2);
*
*
*
* // 声明一个画图的顶级管理器
*
* HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
*
* // 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) 4, 2, (short) 6, 5));
*
* // 设置注释内容
*
* comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));
*
* // 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("leno");
*
*
*
* //产生表格标题行
*
* HSSFRow row = sheet.createRow(0);
*
* for (short i = 0; i < headers.length; i++) {
*
* HSSFCell cell = row.createCell(i);
*
* cell.setCellStyle(style);
*
* HSSFRichTextString text = new HSSFRichTextString(headers[i]);
*
* cell.setCellValue(text);
*
* }
*
* Iterator<T> it = dataset.iterator();
*
* int index = 0;
*
* while (it.hasNext()) {
*
* index++;
*
* row = sheet.createRow(index);
*
* T t = (T) it.next();
*
* //利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值
*
* Field[] fields = t.getClass().getDeclaredFields();
*
* for (short i = 0; i < fields.length; i++) {
*
* HSSFCell cell = row.createCell(i);
*
* cell.setCellStyle(style2);
*
* Field field = fields[i];
*
* String fieldName = field.getName();
*
* String getMethodName = "get"
*
* + fieldName.substring(0, 1).toUpperCase()
*
* + fieldName.substring(1);
*
* try {
*
* Class tCls = t.getClass();
*
* Method getMethod = tCls.getMethod(getMethodName,
*
* new Class[] {});
*
* Object value = getMethod.invoke(t, new Object[] {});
*
* //判断值的类型后进行强制类型转换
*
* String textValue = null;
*
* // if (value instanceof Integer) {
*
* // int intValue = (Integer) value;
*
* // cell.setCellValue(intValue);
*
* // } else if (value instanceof Float) {
*
* // float fValue = (Float) value;
*
* // textValue = new HSSFRichTextString(
*
* // String.valueOf(fValue));
*
* // cell.setCellValue(textValue);
*
* // } else if (value instanceof Double) {
*
* // double dValue = (Double) value;
*
* // textValue = new HSSFRichTextString(
*
* // String.valueOf(dValue));
*
* // cell.setCellValue(textValue);
*
* // } else if (value instanceof Long) {
*
* // long longValue = (Long) value;
*
* // cell.setCellValue(longValue);
*
* // }
*
* if (value instanceof Boolean) {
*
* boolean bValue = (Boolean) value;
*
* textValue = "男";
*
* if (!bValue) {
*
* textValue ="女";
*
* }
*
* } else if (value instanceof Date) {
*
* Date date = (Date) value;
*
* SimpleDateFormat sdf = new SimpleDateFormat(pattern);
*
* textValue = sdf.format(date);
*
* } else if (value instanceof byte[]) {
*
* // 有图片时，设置行高为60px;
*
* row.setHeightInPoints(60);
*
* // 设置图片所在列宽度为80px,注意这里单位的一个换算
*
* sheet.setColumnWidth(i, (short) (35.7 * 80));
*
* // sheet.autoSizeColumn(i);
*
* byte[] bsValue = (byte[]) value;
*
* HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0,
*
* 1023, 255, (short) 6, index, (short) 6, index);
*
* anchor.setAnchorType(2);
*
* patriarch.createPicture(anchor, workbook.addPicture(
*
* bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));
*
* } else{
*
* //其它数据类型都当作字符串简单处理
*
* textValue = value.toString();
*
* }
*
* //如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成
*
* if(textValue!=null){
*
* Pattern p = Pattern.compile("^\\d+(\\.\\d+)?$");
*
* Matcher matcher = p.matcher(textValue);
*
* if(matcher.matches()){
*
* //是数字当作double处理
*
* cell.setCellValue(Double.parseDouble(textValue));
*
* }else{
*
* HSSFRichTextString richString = new HSSFRichTextString(textValue);
*
* HSSFFont font3 = workbook.createFont();
*
* font3.setColor(HSSFColor.BLUE.index);
*
* richString.applyFont(font3);
*
* cell.setCellValue(richString);
*
* }
*
* }
*
* } catch (SecurityException e) {
*
* // TODO Auto-generated catch block
*
* e.printStackTrace();
*
* } catch (NoSuchMethodException e) {
*
* // TODO Auto-generated catch block
*
* e.printStackTrace();
*
* } catch (IllegalArgumentException e) {
*
* // TODO Auto-generated catch block
*
* e.printStackTrace();
*
* } catch (IllegalAccessException e) {
*
* // TODO Auto-generated catch block
*
* e.printStackTrace();
*
* } catch (InvocationTargetException e) {
*
* // TODO Auto-generated catch block
*
* e.printStackTrace();
*
* } finally {
*
* //清理资源
*
* }
*
* }
*
*
*
* }
*
* try {
*
* workbook.write(out);
*
* } catch (IOException e) {
*
* e.printStackTrace();
*
* }
*
* }
*/
/*
* public void exportExcel(String[] headers, Collection<T>
* dataset,OutputStream out) {
*
* }
*/
}