package goodsmng;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.JOptionPane;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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.hssf.util.HSSFColor;
import student.Book;
import student.ExportExcel;
import student.Student;
public class goodExcel<T> {
//메인입니다. ******************************************************************************************
public static void main(String[] args) {
ExportExcel<Student> ex = new ExportExcel<Student>();
String[] headers = { "넘버", "이름", "나이", "성별", "출생년월" };
List<Student> dataset = new ArrayList<Student>();
dataset.add(new Student(10000001, "김아무개", 20, true, new Date()));
dataset.add(new Student(20000002, "홍길동", 24, false, new Date()));
dataset.add(new Student(30000003, "김삿갓", 22, true, new Date()));
ExportExcel<Book> ex2 = new ExportExcel<Book>();
String[] headers2 = { "넘버", "도서명", "도서작가", "도서가격", "도서ISBN", "도서출판", "이미지" };
List<Book> dataset2 = new ArrayList<Book>();
try
{
BufferedInputStream bis = new BufferedInputStream( new FileInputStream("Z://book.jpg"));
byte[] buf = new byte[bis.available()];
while ((bis.read(buf)) != -1)
{
//
}
dataset2.add(new Book(1, "jsp", "leno", 300.33f, "1234567", "출판서1", buf));
dataset2.add(new Book(2, "java", "brucl", 300.33f, "1234567", "출판서2", buf));
dataset2.add(new Book(3, "DOM", "lenotang", 300.33f, "1234567", "출판서1", buf));
dataset2.add(new Book(4, "c++", "leno", 400.33f, "1234567", "출판서1", buf));
dataset2.add(new Book(5, "c#", "leno", 300.33f, "1234567", "출판서3", buf));
OutputStream out = new FileOutputStream("Z://test_1.xls");
OutputStream out2 = new FileOutputStream("Z://test_2.xls");
ex.exportExcel(headers, dataset, out);
ex2.exportExcel(headers2, dataset2, out2);
out.close();
JOptionPane.showMessageDialog(null, "성공!");
System.out.println("excel성공！");
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
}
//엑셀 파일 만들기 ****************************************************************************************
public void exportExcel(String title, String[] headers, Collection<T> dataset, OutputStream out, String pattern) {
HSSFWorkbook workbook = new HSSFWorkbook();//workbook만들기
HSSFSheet sheet = workbook.createSheet(title);//시트 만들기
sheet.setDefaultColumnWidth((short) 15);//셀 넓이 지정하기
HSSFCellStyle style = workbook.createCellStyle();//셀 스타일생성
//스타일 지정
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);
//폰트 생성
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//생성된 폰트 사용
style.setFont(font);
//다른 스타일 지정
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);
//다른 폰트 생성
HSSFFont font2 = workbook.createFont();
font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
style2.setFont(font2);
//그림판 관리기를 선언한다
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short) 4, 2, (short) 6, 5));//주석 위치 크기
comment.setString(new HSSFRichTextString("셀 주석 달기"));
comment.setAuthor("저자 달기 ");
//셀 타이틀 생성하기
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);
}
//데이터 생성
Iterator<T> it = dataset.iterator();
int index = 0;
while (it.hasNext()){
index++;
row = sheet.createRow(index);
T t = (T)it.next();
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[]
{});
String textValue = null;
if (value instanceof Boolean)
{
boolean bValue = (Boolean) value;
textValue = "남";
if (!bValue)
{
textValue = "녀";
}
}
else if (value instanceof Date)
{
Date date = (Date) value;
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
textValue = sdf.format(date);
}
else if (value instanceof byte[])
{
row.setHeightInPoints(60);
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
{
textValue = value.toString();
}
if (textValue != null)
{
Pattern p = Pattern.compile("^//d+(//.//d+)?$");
Matcher matcher = p.matcher(textValue);
if (matcher.matches())
{
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)
{
e.printStackTrace();
}
catch (NoSuchMethodException e)
{
e.printStackTrace();
}
catch (IllegalArgumentException e)
{
e.printStackTrace();
}
catch (IllegalAccessException e)
{
e.printStackTrace();
}
catch (InvocationTargetException e)
{
e.printStackTrace();
}
finally
{
}
}
}
try
{
workbook.write(out);
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
文獻 http://blog.csdn.net/evangel_z/article/details/7332535
超級詳細
http://rensanning.iteye.com/blog/1538591