자바 엑셀 내 보 내기 일반적인 방법의 인 스 턴 스 상세 설명

package oa.common.utils; 
import java.io.OutputStream; 
import java.util.List; 
import javax.servlet.http.HttpServletResponse; 
import org.apache.struts2.ServletActionContext; 
import java.lang.reflect.Field; 
 
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 lsf 
 */ 
public class ExportExcel { 
 /*************************************************************************** 
 * @param fileName EXCEL     
 * @param listTitle EXCEL           
 * @param listContent EXCEL         
 * @return 
 */ 
 public final static String exportExcel(String fileName,String[] Title, List<Object> listContent) { 
 String result="    ：Excel      ！";  
 //        EXCEL 
 try {   
  //     ，         ______________________begin 
  HttpServletResponse response=ServletActionContext.getResponse(); 
  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(false); //          
  
 
  /** ***************   EXCEL     ，    ********************* */ 
  //sheet.mergeCells(0, 0, colWidth, 0); 
  //sheet.addCell(new Label(0, 0, "XX  ", wcf_center)); 
  /** ***************   EXCEL      ********************* */ 
  for (int i = 0; i < Title.length; i++) { 
  sheet.addCell(new Label(i, 0,Title[i],wcf_center)); 
  }   
  /** ***************   EXCEL    ********************* */ 
  Field[] fields=null; 
  int i=1; 
  for(Object obj:listContent){ 
    fields=obj.getClass().getDeclaredFields(); 
    int j=0; 
    for(Field v:fields){ 
      v.setAccessible(true); 
      Object va=v.get(obj); 
      if(va==null){ 
        va=""; 
      } 
      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; 
 } 
} 

/** 
 *   excel 
 * @return 
 */ 
public String excelPage(){ 
  ExportExcel excel=new ExportExcel(); 
  String str=""; 
  try { 
    str = new String(getHTTP.getRequest().getParameter("wineOrg.orgName").getBytes("iso8859-1"),"UTF-8"); 
  } catch (UnsupportedEncodingException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
  } 
  wineOrg.setOrgName(str); 
  List<Object> li=service.exportExcel(wineOrg); 
  String[] Title={"  ID","    ","  ","  "," ID","   ","  ID","    ","    ","   ","  ","    ","    ","  ","  ","QQ","  ","  ","    ","      ","    ","    ","    ","    ","   ID","     ","create_time","del","STS","  ","   ID","     ","    ","   ID ","     ","    ","   ID","     ","    ","   ID","      ","    "}; 
  excel.exportExcel("      .xls",Title, li);  
  return SUCCESS; 
}