1、引入POI的jar包依赖
2.工具类代码：
public class ExcelUtil {
/**
* 导出Excel
* @param sheetName sheet名称
* @param title 标题
* @param values 内容
* @param wb HSSFWorkbook对象
* @return
*/
public static HSSFWorkbook getHSSFWorkbook(String sheetName,String []title,String [][]values, HSSFWorkbook wb,String mergeCell,Integer cellNum ){
// 第一步，创建一个HSSFWorkbook，对应一个Excel文件
if(wb == null){
wb = new HSSFWorkbook();
}
// 第二步，在workbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet sheet = wb.createSheet(sheetName);
// 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制
HSSFRow row = sheet.createRow(0);
// 第四步，创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
//声明列对象
HSSFCell cell = null;
if (StringUtils.isNotEmpty(mergeCell)) {
//合并单元格
CellRangeAddress callRangeAddress = new CellRangeAddress(0,0,0,cellNum);//起始行,结束行,起始列,结束列
sheet.addMergedRegion(callRangeAddress);
cell = row.createCell(0);
cell.setCellValue(mergeCell);
cell.setCellStyle(style);
row = sheet.createRow(1);
// HSSFCell cell = null;
//创建标题
for(int i=0;i<title.length;i++){
cell = row.createCell(i);
cell.setCellValue(title[i]);
cell.setCellStyle(style);
}
//创建内容
for(int i=0;i<values.length;i++){
row = sheet.createRow(i + 2);
for(int j=0;j<values[i].length;j++){
//将内容按顺序赋给对应的列对象
row.createCell(j).setCellValue(values[i][j]);
}
}
}else{
// HSSFCell cell = null;
//创建标题
for(int i=0;i<title.length;i++){
cell = row.createCell(i);
cell.setCellValue(title[i]);
cell.setCellStyle(style);
}
//创建内容
for(int i=0;i<values.length;i++){
row = sheet.createRow(i + 1);
for(int j=0;j<values[i].length;j++){
//将内容按顺序赋给对应的列对象
row.createCell(j).setCellValue(values[i][j]);
}
}
}
return wb;
}
}
3.控制器代码：
@RequestMapping(value = "/manage/enroCount/export")
@ResponseBody
public void enroCountExport(HttpServletRequest request, HttpServletResponse response) throws Exception {
String aguserId = request.getParameter("aguserId");
String start = request.getParameter("start");
String end = request.getParameter("end");
Aguser aguser = aguserService.findById(aguserId);
SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd"); //加上时间
Date startDate = null;
Date endDate = null;
if (org.apache.commons.lang.StringUtils.isNotBlank(start)) {
startDate = sDateFormat.parse(start);
}
if(org.apache.commons.lang.StringUtils.isNotBlank(end)) {
endDate = sDateFormat.parse(end);
}
// 获取数据
//List<Agreport> list = aguserReportService.findByAgent(agent, startDate, endDate);
//获取数据
List<User> list = userService.findEnroCount(aguserId,startDate,endDate);
// excel标题
String[] title = { "学生姓名", "手机号", "身份证号", "地址", "课程名称", "课程付费状态"};
// excel文件名
String fileName = "代理商"+aguser.getUserName()+"的招生信息统计表" + System.currentTimeMillis() + ".xls";
// CellRangeAddress callRangeAddress = new
// CellRangeAddress(0,0,0,6);//起始行,结束行,起始列,结束列
// sheet名
String sheetName = "招生信息统计表";
String[][] content = new String[list.size()][title.length];
String state = "";
for (int i = 0; i < list.size(); i++) {
// content[i] = new String[title.length];
User user = list.get(i);
if(null != user.getState() && true == user.getState()){
state="已付费";
}else {
state = "未付费";
}
/*
* Date date = obj.getReportDate(); content[i][0] =
* sDateFormat.format(date);
*/
content[i][0] = user.getUserName();
content[i][1] = user.getPhone() + "";
content[i][2] = user.getCardNo() + "";
content[i][3] = user.getAddress() + "";
content[i][4] = user.getTitle();
content[i][5] = state;
}
//合并单元格的内容
String mergeCell = "代理商"+aguser.getUserName()+"招生总人数："+list.size()+" 人";
Integer cellNum = 5;//合并单元格6列
// 创建HSSFWorkbook
// HSSFWorkbook wb1 = new HSSFWorkbook();
HSSFWorkbook wb = ExcelUtil.getHSSFWorkbook(sheetName, title, content, null,mergeCell,cellNum);
// File errFile = new File(CoinConfig.RESOURCE_BASIC_PATH+"/"
// +fileName);
// 响应到客户端
try {
this.setResponseHeader(response, fileName);
OutputStream os = response.getOutputStream();
// OutputStream os = new FileOutputStream(errFile);
wb.write(os);
os.flush();
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// 发送响应流方法
public void setResponseHeader(HttpServletResponse response, String fileName) {
try {
try {
fileName = new String(fileName.getBytes(), "ISO8859-1");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
response.setContentType("application/octet-stream;charset=ISO8859-1");
response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
response.addHeader("Pargam", "no-cache");
response.addHeader("Cache-Control", "no-cache");
} catch (Exception ex) {
ex.printStackTrace();
}
}
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