导出Excel的工具类，对BillListPanel进行导出

package nc.ui.fh.des.excel;

import java.io.*;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
import java.util.Map.Entry;

import javax.swing.JFileChooser;
import javax.swing.JTable;

import nc.ui.pub.ToftPanel;
import nc.ui.pub.beans.UITable;
import nc.ui.pub.bill.BillItem;
import nc.ui.pub.bill.BillListPanel;
import jxl.*;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;

/**
* 导出Excel的工具类
* @author 麻杰 
* @创建时间：2011-11-16 下午06:08:23
*/
public class BillListExportExcel {

 protected static javax.swing.JFileChooser m_chooser = null;
 protected static BillListPanel billListPanel = null;

 /**
 * @author 麻杰 
 * 日期：2011-11-17
 * @param tp 父组件
 * @param sheetName Excel页签名称
 * @param BillListPanel bill
 * @param istotal 是否合计
 */
 public static void exportExcel(ToftPanel tp ,String sheetName,BillListPanel bill,boolean istotal){
 billListPanel = bill;
 String filePath = null;

   if (getChooser().showSaveDialog(tp) == javax.swing.JFileChooser.CANCEL_OPTION) {
    return;
   }
   filePath = getChooser().getSelectedFile().toString();
   if (filePath == null) {
    tp.showHintMessage("请输入文件名保存!");
    return;
   }

if (filePath.indexOf(".xls") < 0) {
 filePath = filePath + ".xls";
 }
 boolean isSucceed = writeJxlByTableModel(filePath,sheetName,istotal);
 if(isSucceed){
 tp.showWarningMessage("导出完成");
 }else{
 tp.showWarningMessage("导出失败");
 }
 }

/**
 * 生成Excel文件
 * @author 麻杰 
 * 日期：2011-11-17
 * @param filePatch
 * @param sheetName
 * @param istotal 是否合计
 * @return
 */
 public static boolean writeJxlByTableModel(String filePath,String sheetName,boolean istotal) {
 UITable table = billListPanel.getHeadTable();
 if (table == null || table.getRowCount() <= 0)
 return false;
 WritableWorkbook writableWorkbook = null;
 OutputStream os = null;
 try {
 os = new FileOutputStream(filePath);
 // 创建可写簿
 writableWorkbook = Workbook.createWorkbook(os);
 // 创建工作表
 WritableSheet ws = writableWorkbook.createSheet(sheetName, 0);
 // 创建一个内容第一个整数为列，第二个整数位行
 Label label = null;
 int rows = table.getRowCount();
 int cols = table.getColumnCount();
 for (int row = 0; row < rows + 1; row++) {
 for (int col = 0; col < cols ; col++) {
 if(row == 0){
 String headerName = table.getTableHeader().getColumnModel().getColumn(col).getHeaderValue() == null ? "" :
 table.getTableHeader().getColumnModel().getColumn(col).getHeaderValue().toString();
 label = new Label(col,row,headerName,getHeaderFormat());
 ws.addCell(label);
 ws.setColumnView(col, headerName == null ? 10 : (headerName.length() > 2 ? headerName.length()*3 : headerName.length()*6));
 }

 label = new Label(col,row+1,table.getValueAt(row, col) == null ? "" : table.getValueAt(row, col).toString());
 if(label.getContents() != null){
 if(label.getContents().equals("false")){
 label.setString("N");
 }else if(label.getContents().equals("true")){
 label.setString("Y");
 }
 }
 ws.addCell(label);
 }
 }
 if(istotal){
 //添加合计行
 Map<Integer,String> map = getTotalMap();
 if(map != null && map.size()>0){
 Set<Entry<Integer,String>> set = map.entrySet();
 Iterator it = set.iterator();
 while(it.hasNext()){
 Entry<Integer,String> entry = (Entry<Integer, String>) it.next();
 label = new Label(entry.getKey(),rows+1,entry.getValue());
 ws.addCell(label);
 }
 }
 }
 writableWorkbook.write();

 } catch (IOException e) {
 e.printStackTrace();
 } catch (RowsExceededException e) {
 e.printStackTrace();
 } catch (WriteException e) {
 e.printStackTrace();
 } finally {
 if(writableWorkbook != null){
 try {
 writableWorkbook.close();
 } catch (WriteException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 if(os != null){
 try {
 os.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 }
 return true;
 }

 /**
 * 获得文件选择器
 * @author 麻杰 
 * 日期：2011-11-17
 * @return
 */
 private static javax.swing.JFileChooser getChooser() {

      if (m_chooser == null) {
       m_chooser = new JFileChooser();
       m_chooser.setDialogType(JFileChooser.SAVE_DIALOG);
      }
      return m_chooser;

}

 /**
 * 获得表头行样式
 * @author 麻杰 
 * 日期：2011-11-16
 * @throws WriteException
 */
 private static WritableCellFormat getHeaderFormat() throws WriteException{
 WritableFont font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD, false);
 WritableCellFormat format = new WritableCellFormat(font);
 format.setWrap(false);
 format.setAlignment(Alignment.CENTRE);//水平方向剧中
 format.setVerticalAlignment(VerticalAlignment.CENTRE);
 return format;
 }

 /**
 * 获得合计封装Map
 * @author 麻杰 
 * 日期：2011-11-18
 * @return
 */
 private static Map<Integer,String> getTotalMap(){
 Vector vector = (Vector)billListPanel.getHeadBillModel().getTotalTableModel().getDataVector().get(0);
 Object total = null;
 Map<Integer,String> map = new HashMap<Integer,String>();
 for(int i=0;i<vector.size();i++){
 total = vector.get(i);
 if(total != null){
 int result = getOrder(i);
 if(result != -1){
 map.put(result, total.toString());
 }
 }
 }
 return map;
 }

 /**
 * 根据合计值的位置获得其在UITable中的位置
 * @author 麻杰 
 * 日期：2011-11-18
 * @param num
 * @return
 */
 private static Integer getOrder(int num){
 int result = 0;
 BillItem[] billItem = billListPanel.getHeadBillModel().getBodyItems();

 if(!billItem[num].isShow()){
 return -1;
 }

 for(int i=0;i<num;i++){
 if(billItem[i].isShow()){
 result++;
 }
 }
 return result;
 }
}

导出Excel的工具类，对BillListPanel进行导出

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