easypoi 匯入匯出
阿新 • • 發佈:2020-12-31
這次任務是報表的匯入匯出,總結一下心得。
1 匯入依賴 專案原本就有
2 接下來就是使用,用起來也是很簡單。一切查詢資料都是按照正常邏輯來寫。
匯出:
1 圖片
/** * oe下載 * @param * @param response * ExcelExportUtil.exportExcel */ @RequestMapping("OeDecodingExcelExport") @ResponseBody public Result OeDecodingExcelExport(HttpServletResponse response,String startTime,String endTime,Integer logoCode) throwsIOException { Result result=new Result(); response.setContentType("text/html; charset=utf-8"); //查詢資料 List<OeDecoding> oeDecoding = iOeDecoding.oeCodeExcelExport(startTime,endTime,logoCode); if(oeDecoding.size()==0){ result.setResultCode(new ResultCode(-1,"無資料,請重新選擇"));return result; } Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("oe碼解碼", "oe碼解碼", ExcelType.XSSF), OeDecoding.class, oeDecoding); String fileName = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMdd HHmmss")); fileName += fileName + "oe碼解碼"; fileName= URLEncoder.encode(fileName, "UTF-8"); response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.addHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx"); workbook.write(response.getOutputStream()); return result; }
核心方法:
Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("oe碼解碼", "oe碼解碼", ExcelType.XSSF), OeDecoding.class, oeDecoding);
解釋:
第一個引數是title名字,第二個是sheetname名字,ExcelType.XSSF 是固定格式,“OeDecoding.class”,這個是實體類的對映,這是主要點。oeDecoding,這個是需要下載的資料,如果只是下載固定模板的話,這個就不要了。
2 實體類方法註解
@excel 註解打上就可以實現下載了。還有不同的屬性值可以設定,這裡可以去看官方文件。
匯入:
核心方法:
ExcelImportResult<OeDecoding> list = ExcelImportUtil.importExcelMore(file.getInputStream(), OeDecoding.class, params);
ExcelImportUtil,提供了很多方法,可以進原始檔看看。這個不需要些,引入依賴就有了。
我摘了原始檔:
/** * Copyright 2013-2015 JueYue ([email protected]) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package cn.afterturn.easypoi.excel; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.util.List; import cn.afterturn.easypoi.handler.inter.IReadHandler; import org.apache.poi.util.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import cn.afterturn.easypoi.excel.entity.ImportParams; import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult; import cn.afterturn.easypoi.excel.imports.ExcelImportService; import cn.afterturn.easypoi.excel.imports.sax.SaxReadExcel; import cn.afterturn.easypoi.exception.excel.ExcelImportException; /** * Excel 匯入工具 * * @author JueYue * 2013-9-24 * @version 1.0 */ @SuppressWarnings({ "unchecked" }) public class ExcelImportUtil { private ExcelImportUtil() { } private static final Logger LOGGER = LoggerFactory.getLogger(ExcelImportUtil.class); /** * Excel 匯入 資料來源本地檔案,不返回校驗結果 匯入 字 段型別 Integer,Long,Double,Date,String,Boolean * * @param file * @param pojoClass * @param params * @return */ public static <T> List<T> importExcel(File file, Class<?> pojoClass, ImportParams params) { FileInputStream in = null; try { in = new FileInputStream(file); return new ExcelImportService().importExcelByIs(in, pojoClass, params, false).getList(); } catch (ExcelImportException e) { throw new ExcelImportException(e.getType(), e); } catch (Exception e) { LOGGER.error(e.getMessage(), e); throw new ExcelImportException(e.getMessage(), e); } finally { IOUtils.closeQuietly(in); } } /** * Excel 匯入 資料來源IO流,不返回校驗結果 匯入 欄位型別 Integer,Long,Double,Date,String,Boolean * * @param inputstream * @param pojoClass * @param params * @return * @throws Exception */ public static <T> List<T> importExcel(InputStream inputstream, Class<?> pojoClass, ImportParams params) throws Exception { return new ExcelImportService().importExcelByIs(inputstream, pojoClass, params, false).getList(); } /** * Excel 匯入 資料來源IO流 欄位型別 Integer,Long,Double,Date,String,Boolean * 支援校驗,支援Key-Value * * @param inputstream * @param pojoClass * @param params * @return * @throws Exception */ public static <T> ExcelImportResult<T> importExcelMore(InputStream inputstream, Class<?> pojoClass, ImportParams params) throws Exception { return new ExcelImportService().importExcelByIs(inputstream, pojoClass, params, true); } /** * Excel 匯入 資料來源本地檔案 欄位型別 Integer,Long,Double,Date,String,Boolean * 支援校驗,支援Key-Value * @param file * @param pojoClass * @param params * @return */ public static <T> ExcelImportResult<T> importExcelMore(File file, Class<?> pojoClass, ImportParams params) { FileInputStream in = null; try { in = new FileInputStream(file); return new ExcelImportService().importExcelByIs(in, pojoClass, params, true); } catch (ExcelImportException e) { throw new ExcelImportException(e.getType(), e); } catch (Exception e) { LOGGER.error(e.getMessage(), e); throw new ExcelImportException(e.getMessage(), e); } finally { IOUtils.closeQuietly(in); } } /** * Excel 通過SAX解析方法,適合大資料匯入,不支援圖片 * 匯入 資料來源本地檔案,不返回校驗結果 匯入 字 段型別 Integer,Long,Double,Date,String,Boolean * * @param inputstream * @param pojoClass * @param params * @param handler */ public static void importExcelBySax(InputStream inputstream, Class<?> pojoClass, ImportParams params, IReadHandler handler) { new SaxReadExcel().readExcel(inputstream, pojoClass, params, handler); } }
不同的方法對應的引數也不同,請對著自己的需求,選擇方法。
總之,方法是很簡答的。但是我的需求對上傳的資料篩選條件有點多,這裡就不放出來了。只是提供一種思路。