java用poi实现将数据库里面的数据导入已经存在的excel模板中。最好有实例参考，谢谢。
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数据库里面的每一条数据list.get(i)，可能会需要导入excel模板中的一行或者多行。那么循环添加的时候，开始的行号应该怎么确定呢？通过反射得到的对象属性的get()方法，怎么与list,get(i)拼接后得到相应的值。
/*** 通过EXCEL模板导入团队信息
*/
@ResponseBody
@RequestMapping("importTemp")
public Map<String,String> importTemp(HttpServletRequest request,HttpSession session,
@RequestParam(value="excel", required=false) MultipartFile file, HttpServletResponse response )
Yhb yhb=(Yhb)session.getAttribute(WebConstants.CURRENT_USER);
String zjr = yhb.getYhid();
List<DrTdb> tdxxList = new ArrayList<DrTdb>();
Map<String,String> map = new HashMap<String,String>();
String sfcg = "1";
String bcghs = "";
String bcgyy = "";
HSSFWorkbook workbook = null;
try
workbook = new HSSFWorkbook(file.getInputStream());
HSSFSheet sheet = workbook.getSheetAt(0);
if (sheet != null)
int d= sheet.getPhysicalNumberOfRows();
other: for (int i = 7; i < sheet.getPhysicalNumberOfRows(); i++)
sfcg = "2";
HSSFRow row = sheet.getRow(i);
DrTdb td = new DrTdb();
int rs = 1;
//td.setTdbm("T"+DateUtil.CurrentTime("MM-dd"));
td.setZjr(zjr);
for (int j = 0; j < 8; j++)
HSSFCell cell = row.getCell(j);
if(j == 0)
if(cell != null)
String cellStr = cell.toString();
if(isDigit(cellStr) != "")
String NDID = (String) tdglService.queryForObject("tdExcel.queryNd",isDigit(cellStr));
td.setNd(NDID);
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "请填写正确的年度";
break other;
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "年度不可为空";
break other;
else if(j == 1)
if(cell != null)
String cellStr = cell.toString();
String YXID = (String) tdglService.queryForObject("tdExcel.queryIdByYx",cellStr);
String YXDM = (String) tdglService.queryForObject("tdExcel.queryDmByYx",cellStr);
if(YXDM==null || YXDM=="")
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "院系不存在";
break other;
td.setSsyx(YXID);
//设置团队编码
String currentYear = DateUtil.CurrentTime("yyyy");//当前年份
String tdbm="";
String str=null;
str="T"+currentYear+YXDM;
String maxID = (String) tdglService.queryForObject("tdgl.queryMaxID", str);//当前团队最大ID
String str_q= maxID.substring(1);
int MAXID=Integer.parseInt(str_q); //将返回的字符串去掉T
tdbm="T"+(MAXID+1);
td.setTdbm(tdbm);
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "院系不存在";
break other;
else if(j == 3)
if(cell != null)
String cellStr = cell.toString();
String[] zdjs = cellStr.split(",");
for(int in = 0; in < zdjs.length; in ++)
zdjs[in] = zdjs[in].substring(1,zdjs[in].length()-1);
//zdjs[in]=isDigit(zdjs[in]);
zdjs[in] = (String) tdglService.queryForObject("tdExcel.queryIdByZgh",zdjs[in]);
if("".equals(zdjs[in]) || zdjs[in] == null)
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "教师编号有误";
break other;
td.setZdjs(zdjs);
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "指导教师不可为空";
break other;
else if(j == 5)
if(cell != null)
String cellStr = cell.toString();
cellStr = cellStr.substring(1,cellStr.length()-1);
// BigDecimal bg=new BigDecimal(cellStr);
//cellStr=bg.toPlainString();
cellStr = (String) tdglService.queryForObject("tdExcel.queryIdByXh",cellStr);
if("".equals(cellStr) || cellStr == null)
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "团队组长学号有误";
break other;
else
String Tdid = (String) tdglService.queryForObject("tdExcel.queryryid",cellStr);
String XM = (String) tdglService.queryForObject("tdExcel.queryXmBy",cellStr);
if( Tdid!= null)
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "团队组长"+XM+"已存在";
break other;
td.setTdzz(cellStr);
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "团队组长不可为空";
break other;
else if(j == 7)
if(cell != null)
String cellStr = cell.toString();
String[] tdzy = cellStr.split(",");
for(int k = 0; k < tdzy.length; k++)
tdzy[k] = tdzy[k].substring(1,tdzy[k].length()-1);
tdzy[k] = (String) tdglService.queryForObject("tdExcel.queryIdByXh",tdzy[k]);
if("".equals(tdzy[k]) || tdzy[k] == null)
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "团队组员学号有误";
break other;
rs++;
td.setTdzy(tdzy);
else
sfcg = "0";
bcghs = String.valueOf(i+1);
bcgyy = "团队组员不可为空";
break other;
td.setRs(String.valueOf(rs));
tdxxList.add(td);
catch(IOException e)
e.printStackTrace();
if("2".equals(sfcg))
for(DrTdb tdxx : tdxxList)
tdglService.insert("tdExcel.addTdxx", tdxx);
tdglService.insert("tdExcel.addTdzz", tdxx);
tdglService.insert("tdExcel.addTdzy", tdxx);
tdglService.insert("tdExcel.addZdjs", tdxx);
map.put("sfcg",sfcg );
map.put("bcghs",bcghs );
map.put("bcgyy",bcgyy );
return map;
看不懂留言
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import org.apache.log4j.Logger;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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 org.apache.poi.ss.util.CellRangeAddress;
import cn.emag.framework.Util.LogName;
/**
* 导出成excel文件工具类
*/
public class Export2ExcelUtil
private static Logger log = Logger.getLogger(LogName.ERROR_LOG);
private static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
/**
* 生成excel文件存入服务器
* @param importdata 待导入excle文件的内容
* @param header excel”表头“部分内容
* @param attr 与”表头“顺序对应的importdata中的成员变量名，首字母大写
* @param fileName 导入到目标文件中，完整路径
*/
public static void export2exc(List<Object> importdata,String[] header,String[] attr, String fileName)
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet();
// 创建头文件
writeHeader(header,sheet,wb);
// 创建文件内容
int i=1;
HSSFRow row;
for(Object object:importdata)
row = sheet.createRow(i++);
writeBody(object, attr, row);
// 写入文件
OutputStream os = null;
try
os = new FileOutputStream(fileName);
wb.write(os);
catch (Exception e)
log.error("写入文件失败",e);
finally
try
os.close();
catch (IOException e)
log.error("写入文件失败",e);
/**
* 创建文件头
* @param header 头内容
* @param sheet
*/
public static void writeHeader(String[] header,HSSFSheet sheet,HSSFWorkbook wb)
HSSFRow row = sheet.createRow(0);
HSSFCellStyle cellstype = wb.createCellStyle();
cellstype = wb.createCellStyle();
cellstype.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);
cellstype.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
cellstype.setBorderBottom(HSSFCellStyle.BORDER_THIN);
cellstype.setBorderLeft(HSSFCellStyle.BORDER_THIN);
cellstype.setBorderRight(HSSFCellStyle.BORDER_THIN);
cellstype.setBorderTop(HSSFCellStyle.BORDER_THIN);
cellstype.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFCell cell;
HSSFRichTextString str;
int n = 0;
for (String head : header)
sheet.setColumnWidth(n, 4000);
cell = row.createCell(n++);
cell.setCellStyle(cellstype);
str = new HSSFRichTextString(head);
cell.setCellValue(str);
/**
* 写行内容
* @param object
* @param atrr
* @param row
* @throws Exception
*/
public static void writeBody(Object object,String[] attr,HSSFRow row)
int n = 0;
HSSFCell cell;
Method method;
HSSFRichTextString str;
String content=null;
for(String atr : attr)
cell = row.createCell(n++);
try
method = object.getClass().getMethod("get"+atr);
Object o = method.invoke(object);
if(null!=o)
if(o instanceof Date)
content=format.format(o);
else
content = String.valueOf( method.invoke(object));
else
content=null;
catch (SecurityException e)
log.error("excel写入单元格内容失败",e);
catch (IllegalArgumentException e)
log.error("excel写入单元格内容失败",e);
catch (NoSuchMethodException e)
log.error("excel写入单元格内容失败",e);
catch (IllegalAccessException e)
log.error("excel写入单元格内容失败",e);
catch (InvocationTargetException e)
log.error("excel写入单元格内容失败",e);
str = new HSSFRichTextString(content);
cell.setCellValue(str);
本回答被提问者和网友采纳 参考技术B 行号你可以再定义一个变量嘛!~
int rowNum = 0;
当每次list.get(i)的时候添加一行就rowNum++,
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