org.apache.poi
poi
3.9
1.
params, HttpServletResponse response, HttpServletRequest request) throws Exception {
List> list=cashRequestService.cashExportQuery(params);
if(list.size()>0){
exportCashExcel(response, request,list);
} else {
// response.sendRedirect("/cash/cashDetailQuery");
render(HTML_TYPE, "", response);
}
}
===============================================================================================
/**
* 导出结算信息（这个Query_Param和cashDetailQuery里的查询一起封装，见文章最下的图）
* @param params
* @return
*/
public List> cashExportQuery(Map params) throws Exception{
List list = new ArrayList();
String sql = Query_Param(params, list);
return dao.find(sql, list.toArray());
}
===============================================================================================
private String Query_Param(Map params,List list){
StringBuffer sb = new StringBuffer();
if (StringUtils.isNotEmpty(params.get("request_time_begin"))) {
String request_time_begin = params.get("request_time_begin");
sb.append(" and apd.settle_time >=to_date(?,'yyyy-mm-dd HH24:MI:SS') ");
list.add(request_time_begin);
}
if(StringUtils.isNotEmpty(params.get("request_time_end"))){
String request_time_end=params.get("request_time_end");
sb.append(" and apd.settle_time <=todate(?,'yyyy-mm-dd HH24：MI:SS') ");
list.add(request_time_end);
}
if(StringUtils.isNotEmpty(params.get("cash_status")) && !params.get("cash_status").equals("-1")){
String cash_status=params.get("cash_status");
sb.append("and apd.status=?");
list.add(cash_status);
}
String sql ="select apd.*, dic.dic_item_name statusName from agent_pay_detail apd "+
" left join (select sd.dic_item_code, sd.dic_item_name from sys_dic_item sd where sd.sys_dic_code = 'ACSETTLE_STATUS') dic "+
" on apd.status = dic.dic_item_code"+sb.toString();
return sql;
}
===============================================================================================
private String merExcelPath = "merExcel";
private void exportCashExcel(HttpServletResponse response,
HttpServletRequest request, List> list
) throws Exception {
SimpleDateFormat sm = new SimpleDateFormat("yyyyMMddHHmmss");
String date = sm.format(new Date());
String parentpath = request.getSession().getServletContext()
.getRealPath("/")
+ File.separator + "uploads" + File.separator + cashExcelPath;
File file = new File(parentpath);
if (!file.exists() || file.isFile()) {
file.mkdirs();
}
String fiename = "结算信息_" + date + ".xls";
File result = ExcelUtils.getCashExcel(parentpath, fiename, list);
FileUtils.Download(result, response); //下载
}
===============================================================================================
/**
* 将结算信息写入Excel（如果有合并项，可以在sql中处理）
* @param parentPath
* @param filename
* @param list
* @return
* @throws Exception
*/
public static File getCashExcel(String parentPath, String filename,
List> list) throws Exception {
File file = new File(parentPath + File.separator + filename);//创建一个文件，兼容WINDOWS和LINUX
Map metadata = new LinkedHashMap<>();
metadata.put("代理商编号,5000", "AGENT_NO");
metadata.put("状态,5000", "statusName");
metadata.put("结算金额,3500", "SETTLE_AMOUNT");
metadata.put("结算费率,3000", "SETTLE_RATE");
metadata.put("结算手续费,4000", "SETTLE_FEE");
metadata.put("结算时间,5000", "SETTLE_TIME");
metadata.put("创建时间,5000", "CREATE_TIME");
metadata.put("开户卡号,7000", "ACCOUNT_NO");
metadata.put("提现金额,5000", "CASH_AMOUNT");
FileOutputStream os = new FileOutputStream(file);
generateExcel(metadata, list).write(os);
os.close();
return file;
}
2.
/**
* 生成excel
* @param metadata 所需要的元数据的LinkedHashMap，格式如下：{"col1Title.col1Width": "field1", "col2Title.col2Width": "field2",...}
* @param data 需要用excel展示的数据
* @return
*/
private static HSSFWorkbook generateExcel(Map metadata, List> data) {
int rowIndex = 0, colIndex = 0;
HSSFWorkbook wb = new HSSFWorkbook();// 创建一个Excel文件
HSSFSheet sheet = wb.createSheet();//创建一个Excel的Sheet（表格）
// 普通单元格样式
HSSFCellStyle commCellStyle = wb.createCellStyle();// 生成一个样式
commCellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);//水平居中
// 金额单元格样式
HSSFCellStyle amountCellStyle = wb.createCellStyle();
amountCellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("0.00"));
amountCellStyle.setAlignment(HSSFCellStyle.ALIGN_RIGHT);
// 设置第一行列头
HSSFRow row = sheet.createRow(rowIndex ++);//创建第一行
for (String aCol : metadata.keySet()) {
String[] titleCfg = aCol.split(",");
HSSFCell cell = row.createCell(colIndex);// 创建第一列
cell.setCellStyle(commCellStyle);
cell.setCellValue(titleCfg[0]);
sheet.setColumnWidth(colIndex++, Integer.valueOf(titleCfg[1]));//设置列宽
}
// 填充数据
for (Map aRow : data) {
row = sheet.createRow(rowIndex ++);
colIndex = 0;
for (String field : metadata.values()) {
HSSFCellStyle cellStyle = commCellStyle;
HSSFCell cell = row.createCell(colIndex++);
Object val = aRow.get(field);
if (null == val) {
cell.setCellValue("--");
} else if (val instanceof Date) {
cell.setCellValue(DateFormatUtils.format((Date) val, "yyyy-MM-dd HH:mm:ss"));
} else if (val instanceof Number) {
cell.setCellValue(Double.valueOf(val.toString()));
cellStyle = amountCellStyle;
} else {
cell.setCellValue(val.toString());
}
cell.setCellStyle(cellStyle);
}
}
return wb;
}
3.FileUtils.Download
/**
* 下载指定文件
*
* @param result
* @param response
* @throws IOException
*/
public static void Download(File result, HttpServletResponse response)
throws IOException {
InputStream fis = new BufferedInputStream(new FileInputStream(result));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset(); // 清空输出流
response.setHeader("Content-disposition", "attachment;filename="
+ new String(result.getName().getBytes("GBK"), "ISO8859-1"));
response.setContentType("application/msexcel;charset=UTF-8");// 定义输出类型
response.addHeader("Content-Length", "" + result.length());
OutputStream toClient = new BufferedOutputStream(
response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
}
