excel有固定模板样式，列表导出excel
前台页面
<div style="float:right;margin-bottom:4px;">
<button class="btn btn-default" type="button" onclick="export1('${formData.infoId!''}')"><i class="icon icon-file-excel"></i> 导出</button>
<button class="btn btn-default" type="button" onclick="JavaScript :history.back(-1)"><i class="icon icon-reply"></i> 返回</button>
</div>
js方法
<script type="text/javascript">
function export1(id){
location.href = "${_b}/msg/msgBaseInfo/exportExcel?id="+id;
}
</script>
controller 内容
@RequestMapping(value = "/exportExcel", method ={RequestMethod.GET,RequestMethod.POST })
public void exportExcel(String id,
HttpServletRequest request,HttpServletResponse response, ModelMap model) {
EntityWrapper<MsgRecevier> entityWrapper = new EntityWrapper<MsgRecevier>();
entityWrapper.eq("INFO_ID", id);
List<MsgRecevier> msgReceviersList = msgRecevierServiceImpl.selectList(entityWrapper);
MsgBaseInfo msgBaseInfo = msgBaseInfoServiceImpl.selectById(id);
String isreport = msgBaseInfo.getIsReport();
List<Map<String,Object>> resultList = new ArrayList<Map<String,Object>>();
int i = 0;
for(MsgRecevier m : msgReceviersList){
@SuppressWarnings("unchecked")
Map<String,Object> data = new BeanMap(m);
Map<String,Object> newData = new HashMap<String,Object>();
newData.putAll(data);
i++;
newData.put("xh", "" + i);
resultList.add(newData);
}
if(isreport.equals("0")){
ExportUtil.export(request, response, resultList,"签到表","noReport", 0, 2, 0, 2);
}else{
ExportUtil.export(request, response, resultList,"签到表","Report", 0, 2, 0, 3);
}
}
ExcelUtil
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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.ss.usermodel.CellStyle;
public class ExcelUtil {
public static void main(String args[]) throws FileNotFoundException, IOException {
List<Map<String, Object>> dataList = new ArrayList<Map<String, Object>>();
Map<String, Object> dataMap = new HashMap<String, Object>();
dataMap.put("A", "1");
dataMap.put("B", "2");
dataMap.put("C", "3");
dataList.add(dataMap);
dataList.add(dataMap);
dataList.add(dataMap);
dataList.add(dataMap);
HSSFWorkbook excel = generateExcel(dataList, "D:/1.xls", 0, 0, 0, 3);
excel.write(new FileOutputStream("D:/2.xls"));
}
// 读写xls和xlsx格式时，HSSFWorkbook针对xls，XSSFWorkbook针对xlsx
public static HSSFWorkbook generateExcel(List<Map<String, Object>> dataList, String template,// 模板路径
int numSheet,// 第几个工作簿
int startRow,// 开始行号，即记录变量的行号。起始为0
int xStart, int xEnd) {
InputStream is = null;
HSSFWorkbook excel = null;
try {
is = new FileInputStream(template);
excel = new HSSFWorkbook(is);
HSSFSheet xssfSheet = excel.getSheetAt(numSheet);
HSSFRow row = xssfSheet.getRow(startRow);
for (int i = 0; i < dataList.size(); i++) {
Map<String, Object> data = dataList.get(i);
//HSSFRow tempRow = xssfSheet.createRow((short) (startRow + i + 1));
HSSFRow tempRow = xssfSheet.getRow(startRow + i + 1);
// if (row.getRowStyle() != null)
// tempRow.setRowStyle(row.getRowStyle());
for (int j = xStart; j < xEnd; j++) {
if (row.getCell(j) != null) {
HSSFCell cell = row.getCell(j);
String key = cell.getStringCellValue();
//key = key.substring(2, key.length() - 1);
if (data.containsKey(key)) {
String value = "";
if (data.get(key) != null && !"".equals(key)) {
value = data.get(key).toString();
}
HSSFCell c = tempRow.createCell((short) j);
HSSFCellStyle cellStyle= cell.getCellStyle();
//cellStyle.setBorderTop(CellStyle.BORDER_THIN);
cellStyle.setWrapText(true);
c.setCellStyle(cellStyle);
c.setCellValue(new HSSFRichTextString(value));
}
}
}
}
xssfSheet.shiftRows(startRow + 1, xssfSheet.getLastRowNum(), -1);
// HSSFRow lastRow = xssfSheet.getRow(xssfSheet.getLastRowNum());
// for (int j = xStart; j < xEnd; j++) {
// HSSFCell cell = lastRow.getCell(j);
// cell.setCellStyle(null);
// }
xssfSheet.removeRow(xssfSheet.getRow(xssfSheet.getLastRowNum() + 1));
}
catch (Exception e) {
e.printStackTrace();
}
return excel;
}
public static HSSFWorkbook generateExcel(List dataList, String filePath,
Map<String, Object> dataMap) {
// TODO Auto-generated method stub
InputStream is = null;
HSSFWorkbook excel = null;
try {
is = new FileInputStream(filePath);
excel = new HSSFWorkbook(is);
HSSFSheet xssfSheet = excel.getSheetAt(0);
int rownum = 0;
int lastRow = xssfSheet.getLastRowNum();
for (int row = 0; row < lastRow; row++) {
HSSFRow rowExcl = xssfSheet.getRow(row);
for (int i = 0; i < rowExcl.getLastCellNum(); i++) {
HSSFCell cell = rowExcl.getCell(i);
String key ="";
try{
key = cell.getStringCellValue();
}catch (Exception e) {
// TODO: handle exception
}
if (!"".equals(key) && key != null) {
if (key.indexOf("&[") !=-1) {
key = key.substring(2, key.length() - 1);
String value = "";
if (dataMap.get(key) != null && !"".equals(key)) {
value = dataMap.get(key).toString();
}
cell.setCellValue(value);
}
if (key.indexOf("&{") !=-1) {
rownum = row;
break;
}
}
}
}
if (rownum != 0 && dataList.size() > 0) {
HSSFRow row = xssfSheet.getRow(rownum);
for (int i = 0; i < dataList.size(); i++) {
Map<String, Object> data = (Map<String, Object>) dataList.get(i);
HSSFRow tempRow = xssfSheet.createRow((short) (rownum + i));
if (row.getRowStyle() != null)
tempRow.setRowStyle(row.getRowStyle());
for (int j = 0; j < 30; j++) {
if (row.getCell(j) != null) {
HSSFCell cell = row.getCell(j);
String key ="";
try{
key = cell.getStringCellValue();
key = key.substring(2, key.length() - 1);
}catch (Exception e) {
// TODO: handle exception
}
if (data.containsKey(key)&&!"".equals(key)) {
String value = "";
if (data.get(key) != null && !"".equals(key)) {
value = data.get(key).toString();
}
HSSFCell c = tempRow.createCell((short) j);
c.setCellStyle(cell.getCellStyle());
c.setCellValue(value);
}
}
}
}
}
}
catch (Exception e) {
e.printStackTrace();
}
return excel;
}
}
ExportUtil
package com.newhero.product.module.msg.util;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
public class ExportUtil {
@SuppressWarnings("rawtypes")
public static void export(
HttpServletRequest request,
HttpServletResponse response,
List dataList, String fileName,String templateName, int numSheet, int startRow, int xStart, int xEnd){
response.reset();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
String dateStr = sdf.format(new Date());
fileName += "-" + dateStr;
try {
fileName = new String(fileName.getBytes(),"ISO-8859-1");
} catch (Exception e) {
e.printStackTrace();
}
// 指定下载的文件名
response.setHeader("Content-Disposition", "attachment;filename=\"" + fileName + ".xls" + "\"");
response.setContentType("application/vnd.ms-excel;charset=UTF-8");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
// String basePrintPath = (String) request.getSession().getAttribute("basePrintPath");
String basePrintPath = request.getRealPath("") + "/print/";
String template = basePrintPath + templateName + ".xls";
@SuppressWarnings("unchecked")
HSSFWorkbook exportExcel = ExcelUtil.generateExcel(dataList, template, numSheet, startRow, xStart, xEnd);
try {
exportExcel.write(response.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
}
}
}
注意的几点
1.excel模板中字段的名称，要与导出的map键的名称相同一致
2.模板.xls结尾，因为其中涉及版本不同的问题，.xlsx会报错。