标签：on() 对象 生成文件 result row urlencode 点击下载 int file
页面点击下载查询数据库数据写入到SXSSFWorkbook（工作簿）中的`Sheet sheet = xswb.createSheet();`（工作表）
//jdbc方式保存到excel
public EiInfo downData(EiInfo inInfo) {
String sql = convertToSQL(date_PRC1, date_PRC2, type);
String sheetName = convertToSheetName(type);
HttpServletResponse response =(HttpServletResponse) inInfo.get("response");
SXSSFWorkbook xswb;
try {
// 创建xlsx
xswb = createXlsx(sql, sheetName);
// 生成文件
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(sheetName, "utf-8"));
OutputStream outputStream;
outputStream = response.getOutputStream();
xswb.write(outputStream);
outputStream.flush();
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
inInfo.set("status", false);
inInfo.set("msg", "导出失败！");
return inInfo;
}
return inInfo;
}
/*
* 传入sql语句，和需要的命名
* 返回工作簿对象
*/
private SXSSFWorkbook createXlsx(String sql, String sheetName) throws Exception { SXSSFWorkbook xswb = null; Connection con = null; Statement st = null; ResultSet rs = null; try { con = JDBCUtils.getConnection(); st = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY); xswb = new SXSSFWorkbook(); // 创建工作表 Sheet sheet = xswb.createSheet(); xswb.setSheetName(0, sheetName); // 查询数据 rs = st.executeQuery(sql); System.out.println(rs); ResultSetMetaData metaData = rs.getMetaData(); int columnCount = metaData.getColumnCount(); // 创建表头 Row head = sheet.createRow(0); for (int i = 0; i < columnCount; i++) { Cell cell = head.createCell(i); cell.setCellValue(metaData.getColumnName(i + 1)); } // 获取总行数 rs.last(); int rowCount = rs.getRow(); rs.beforeFirst(); // 创建标题 for (int i = 1; i <= rowCount; i++) { rs.next(); Row row = sheet.createRow(i); for (int j = 0; j < columnCount; j++) { Cell cell = row.createCell(j); cell.setCellValue(rs.getString(j + 1)); } } } catch (Exception e) { throw new Exception(e); } finally { JDBCUtils.colseResource(con, st, rs); } return xswb; }
标签：on() 对象 生成文件 result row urlencode 点击下载 int file
原文地址：https://www.cnblogs.com/lwl-ong/p/14598785.html
