JAvaエクスポートexcelをツールクラスにカプセル化
いくつかのプログラムを開発する中で往々にしてexcelをエクスポートする需要に遭遇し、ネット上の多くの例をよく見て、以下に共通のツールクラスを示します.
ExportExcel.java
Controller制御クラスまたはサービスでの呼び出し方法:
必要なjarパッケージ:jxl-2.6.6.jar
ExportExcel.java
package cn.hx.as.util;
import java.io.File;
import java.io.OutputStream;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.lang.reflect.Field;
import javax.servlet.http.HttpServletResponse;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.VerticalAlignment;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
/***
* @author ardp
*/
public class ExportExcel {
/***************************************************************************
* @param fileName
* EXCEL
* @param listTitle
* EXCEL
* @param listContent
* EXCEL
* @return
*/
public final static String exportExcel(String fileName, String[] Title,
Object listContent, HttpServletResponse response,String title,Integer colWidth) {
String result = " ：Excel ！";
// EXCEL
try {
// ， ______________________begin
OutputStream os = response.getOutputStream();//
response.reset();//
response.setHeader("Content-disposition", "attachment; filename="
+ new String(fileName.getBytes("GB2312"), "ISO8859-1"));
//
response.setContentType("application/msexcel");//
// ， _______________________end
/** ********** ************ */
WritableWorkbook workbook = Workbook.createWorkbook(os);
/** ********** ************ */
WritableSheet sheet = workbook.createSheet("Sheet1", 0);
/** ********** （ ）、 ***************** */
jxl.SheetSettings sheetset = sheet.getSettings();
sheetset.setProtected(false);
/** ************ ************** */
WritableFont NormalFont = new WritableFont(WritableFont.ARIAL, 10);
WritableFont BoldFont = new WritableFont(WritableFont.ARIAL, 10,
WritableFont.BOLD);
/** ************ ， ************ */
//
WritableCellFormat wcf_center = new WritableCellFormat(BoldFont);
wcf_center.setBorder(Border.ALL, BorderLineStyle.THIN); //
wcf_center.setVerticalAlignment(VerticalAlignment.CENTRE); //
wcf_center.setAlignment(Alignment.CENTRE); //
wcf_center.setWrap(false); //
//
WritableCellFormat wcf_left = new WritableCellFormat(NormalFont);
wcf_left.setBorder(Border.NONE, BorderLineStyle.THIN); //
wcf_left.setVerticalAlignment(VerticalAlignment.CENTRE); //
wcf_left.setAlignment(Alignment.LEFT); //
wcf_left.setWrap(true); //
/** *************** EXCEL , ********************* */
/** *************** EXCEL ， ********************* */
if(colWidth == null){
colWidth=21;
}
sheet.mergeCells(0, 0, colWidth, 0);
sheet.addCell(new Label(0, 0, title, wcf_center));
/** *************** EXCEL ********************* */
for (int i = 0; i < Title.length; i++) {
sheet.setColumnView(i, Title.length+6);//
sheet.addCell(new Label(i, 1, Title[i], wcf_center));
}
/** *************** EXCEL ********************* */
Field[] fields = null;
int i = 2;
for (Object obj : (List)listContent) {
fields = obj.getClass().getDeclaredFields();
int j = 0;
for (Field v : fields) {
v.setAccessible(true);
Object va = v.get(obj);
if (va == null) {
va = "";
}
SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
if(va instanceof Timestamp||va instanceof Date){
sheet.addCell(new Label(j, i, sf.format(va), wcf_left));
}else{
sheet.addCell(new Label(j, i, va.toString(), wcf_left));
}
j++;
}
i++;
}
/** ********** EXCEL ******** */
workbook.write();
/** ********* ************* */
workbook.close();
} catch (Exception e) {
result = " ：Excel ， ：" + e.toString();
System.out.println(result);
e.printStackTrace();
}
return result;
}
/***************************************************************************
* @param fileName
* EXCEL
* @param listTitle
* EXCEL
* @param listContent
* EXCEL
* @return
*/
public final static String exportExcel1(File file,String fileName, String[] Title,
Object listContent, HttpServletResponse response,String title,Integer colWidth) {
String result = " ：Excel ！";
// EXCEL
try {
// ， ______________________begin
OutputStream os = response.getOutputStream();//
response.reset();//
response.setHeader("Content-disposition", "attachment; filename="
+ new String(fileName.getBytes("GB2312"), "ISO8859-1"));
//
response.setContentType("application/msexcel");//
// ， _______________________end
/** ********** ************ */
WritableWorkbook workbook = Workbook.createWorkbook(file);
// WritableWorkbook workbook = Workbook.createWorkbook(os);
/** ********** ************ */
WritableSheet sheet = workbook.createSheet("Sheet1", 0);
/** ********** （ ）、 ***************** */
jxl.SheetSettings sheetset = sheet.getSettings();
sheetset.setProtected(false);
/** ************ ************** */
WritableFont NormalFont = new WritableFont(WritableFont.ARIAL, 10);
WritableFont BoldFont = new WritableFont(WritableFont.ARIAL, 10,
WritableFont.BOLD);
/** ************ ， ************ */
//
WritableCellFormat wcf_center = new WritableCellFormat(BoldFont);
wcf_center.setBorder(Border.ALL, BorderLineStyle.THIN); //
wcf_center.setVerticalAlignment(VerticalAlignment.CENTRE); //
wcf_center.setAlignment(Alignment.CENTRE); //
wcf_center.setWrap(false); //
//
WritableCellFormat wcf_left = new WritableCellFormat(NormalFont);
wcf_left.setBorder(Border.NONE, BorderLineStyle.THIN); //
wcf_left.setVerticalAlignment(VerticalAlignment.CENTRE); //
wcf_left.setAlignment(Alignment.LEFT); //
wcf_left.setWrap(true); //
/** *************** EXCEL , ********************* */
/** *************** EXCEL ， ********************* */
if(colWidth == null){
colWidth=21;
}
sheet.mergeCells(0, 0, colWidth, 0);
sheet.addCell(new Label(0, 0, title, wcf_center));
/** *************** EXCEL ********************* */
for (int i = 0; i < Title.length; i++) {
sheet.setColumnView(i, Title.length+6);//
sheet.addCell(new Label(i, 1, Title[i], wcf_center));
}
/** *************** EXCEL ********************* */
Field[] fields = null;
int i = 2;
for (Object obj : (List)listContent) {
fields = obj.getClass().getDeclaredFields();
int j = 0;
for (Field v : fields) {
v.setAccessible(true);
Object va = v.get(obj);
if (va == null) {
va = "";
}
SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
if(va instanceof Timestamp||va instanceof Date){
sheet.addCell(new Label(j, i, sf.format(va), wcf_left));
}else{
sheet.addCell(new Label(j, i, va.toString(), wcf_left));
}
j++;
}
i++;
}
/** ********** EXCEL ******** */
workbook.write();
/** ********* ************* */
workbook.close();
} catch (Exception e) {
result = " ：Excel ， ：" + e.toString();
System.out.println(result);
e.printStackTrace();
}
return result;
}
}
Controller制御クラスまたはサービスでの呼び出し方法:
public void createProudctPriceExcel(HttpServletRequest request,HttpServletResponse response){
List excellist=new ArrayList();
//Map map=(Map)productPrices;
//System.out.println("size"+map.size());
ProductExl productExl=null;
//Set keys = map.keySet();
for(int i=0;i map = (Map)productPrices.get(i);
Set keys = map.keySet();
for(String key:keys){
if(key.equals("pname")){
productExl.setPname(map.get(key).toString());
}
if(key.equals("total")){
productExl.setTotal(map.get(key).toString());
}
}
excellist.add(productExl);
}
String[] Title = { " "," ( : )"};
ExportExcel.exportExcel(new Date().getTime() + ".xls", Title, excellist,
response, " ", 1);
} 必要なjarパッケージ:jxl-2.6.6.jar