ssm导出列表数据
1、制作模板：
2、jsp：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
所属分类
产值事件
产值类型
产值最小值
产值最大值
经办人
审核人
管理
2、controller
@Controller
@RequestMapping(value="/czevent")
public class CZEventController extends Component{
private static String filename="";
/**
* 产值事件导出
* @param request
* @param response
* @param page
* @param entity
*/
@RequestMapping(value="eventListExport")
public void eventListExport(HttpServletRequest request, HttpServletResponse response,Page page,CzEvent entity){
try {
EnterpriseInfo enterpriseInfo = this.getEnterprise(request);
entity.setOrgid(enterpriseInfo.getEnterpriseid());
this.setParams(request, entity, page);
List list = czEventService.queryByPage(page);
for(CzEvent item : list){
String opids = item.getOperatid();
item.setOperatid(opids.split("\\|")[0]);
String checkids = item.getCheckedid();
item.setCheckedid(checkids.split("\\|")[0]);
if (item.getCzparentid().equals("n")) {
item.setCzparentid("流程内");
}else if (item.getCzparentid().equals("w")) {
item.setCzparentid("流程外");
}
if (item.getCztypeid().equals("1")) {
item.setCztypeid("实产值");
}else if (item.getCztypeid().equals("2")) {
item.setCztypeid("虚产值");
}else if (item.getCztypeid().equals("3")) {
item.setCztypeid("创富产值");
}else{
item.setCztypeid("");
}
}
Date currentTime = new Date();
String nameString = new String("产值事件".getBytes("GB2312"),"8859_1");
String tablename = nameString+(new SimpleDateFormat("yyyyMMddHHmmss").format(currentTime));
Map data = new HashMap();
data.put("list", list);
response.setHeader("Content-disposition", "attachment; filename="+tablename+".xls");
//定义输出类型为excel
response.setContentType("application/msexcel");
Excel excel = new Excel();
excel.init("excelmodel/czeventListExport.xls", data);
excel.writeTo(response.getOutputStream());
} catch (Exception e) {
log.error("操作异常",e);
}
}
}
3、Execl.java工具类
package com.util;
/**
* Excel包装类。
*/
public class Excel {
Logger logger = Logger.getLogger(Excel.class);
/** Excel模版路径 */
private static String REPORT_DIR = "";
private XLSTransformer transformer = new XLSTransformer();
private Workbook workbook;
/**
* 初始化生成Excel。
*
* @param templateFileName
* 模版文件名称
* @param model
* 数据模型
*/
public void init(String templateFileName, Map model) {
try {
String string = getClass().getResource("/").getPath();
logger.info("Excel==============string:"+string);
String[] strs = string.split("/");
String path = "";
for (int i = 0; i < strs.length - 2; i++) {
path += strs[i] + File.separator;
}
path = path + templateFileName;
// path = path.substring(1, path.length());
logger.info(">>>>>>>>>>模板文件路径为：" + path);
File file = new File(path);
InputStream in = new FileInputStream(file);
//InputStream in = getClass().getResourceAsStream(path);
workbook = transformer.transformXLS(in, model);
//transformer.t
in.close();
} catch (Exception e) {
throw new BusinessException("生成Excel时发生异常。", e);
}
}
/**
* 初始化生成多工作表的Excel。
*
* @param data
* Excel数据
*/
public void init(ExcelData data) {
try {
// 如果没有设置工作表名称列表，则根据指定的工作表名称字段自动生成。
List sheetNames = data.getSheetNames();
if (sheetNames.isEmpty()) {
for (Object sheetModel : data.getSheetModels()) {
sheetNames.add(BeanUtils.getField(sheetModel,
data.getSheetNameField()).toString());
}
}
InputStream in = getClass().getResourceAsStream(
REPORT_DIR + "/" + data.getTemplateFileName());
workbook = transformer.transformMultipleSheetsList(in,
data.getSheetModels(), sheetNames,
data.getSheetModelName(), data.getOtherModel(),
data.getStartSheetNum());
in.close();
} catch (Exception e) {
throw new BusinessException("生成Excel时发生异常。", e);
}
}
/**
* 转换成Excel文件输出流。
*
* @return 返回Excel文件输出流。
*/
public ByteArrayOutputStream toOutputStream() {
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
workbook.write(out);
out.flush();
return out;
} catch (Exception e) {
throw new BusinessException("转换Excel文件输出流时发生异常。", e);
}
}
/**
* 转换成Excel文件输入流。
*
* @return 返回Excel文件输入流。
*/
public ByteArrayInputStream toInputStream() {
try {
ByteArrayOutputStream out = toOutputStream();
ByteArrayInputStream in = new ByteArrayInputStream(
out.toByteArray());
out.close();
return in;
} catch (Exception e) {
throw new BusinessException("转换Excel文件输入流时发生异常。", e);
}
}
/**
* 将Excel文件写入到输出流。
*
* @param out
* 输出流
*/
public void writeTo(OutputStream out) {
try {
workbook.write(out);
out.flush();
out.close();
} catch (Exception e) {
logger.info("Excel==============Exception:"+e.getMessage());
throw new BusinessException("将Excel文件写入到输出流时发生异常。", e);
}
}
public XLSTransformer getTransformer() {
return transformer;
}
public void setTransformer(XLSTransformer transformer) {
this.transformer = transformer;
}
public Workbook getWorkbook() {
return workbook;
}
public void setWorkbook(Workbook workbook) {
this.workbook = workbook;
}
public InputStream getInputStream(String tpath){
InputStream in=null;
try {
String string = getClass().getResource("/").getPath();
logger.info("Excel==============string:"+string);
String[] strs = string.split("/");
String path = "";
for (int i = 0; i < strs.length - 2; i++) {
path += strs[i] + File.separator;
}
path = path + tpath;
// path = path.substring(1, path.length());
logger.info(">>>>>>>>>>模板文件路径为：" + path);
File file = new File(path);
in = new FileInputStream(file);
} catch (Exception e) {
}
return in;
}
/**
* 根据HSSFCell类型设置数据
*
* @param cell
* @return
*/
public String getCellFormatValue(Cell cell) {
String cellvalue = "";
if (cell != null) {
// 判断当前Cell的Type
switch (cell.getCellType()) {
// 如果当前Cell的Type为NUMERIC
case HSSFCell.CELL_TYPE_FORMULA: {
// 判断当前的cell是否为Date
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// 如果是Date类型则，转化为Data格式
Date date = cell.getDateCellValue();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
cellvalue = sdf.format(date);
} else {
// 如果是纯数字
// 取得当前Cell的数值
BigDecimal big = new BigDecimal(cell.getNumericCellValue());
cellvalue = String.valueOf(big.longValue());
}
break;
}
case HSSFCell.CELL_TYPE_NUMERIC: {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// 如果是Date类型则，转化为Data格式
Date date = cell.getDateCellValue();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
cellvalue = sdf.format(date);
} else {
// 如果是纯数字
// 取得当前Cell的数值
BigDecimal big = new BigDecimal(cell.getNumericCellValue());
cellvalue = String.valueOf(big.longValue());
}
// 如果是double，返回结果。
break;
}
// 如果当前Cell的Type为STRIN
case HSSFCell.CELL_TYPE_STRING:
// 取得当前的Cell字符串
cellvalue = cell.getRichStringCellValue().getString();
break;
// 默认的Cell值
default:
cellvalue = " ";
}
} else {
cellvalue = "";
}
return cellvalue;
}
public Iterator readExcel(String filePath) throws Exception {
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(filePath));
HSSFWorkbook workBook = new HSSFWorkbook(fs);
HSSFSheet sheet = workBook.getSheetAt(0);
Iterator it = sheet.rowIterator();
return it;
}
}