Java操作POI批量匯出多個excle，打壓縮包
阿新 • • 發佈：2019-02-18
一、前端JS
//站內搜尋查詢報表-Excel匯出 function exportRecord(){ var browseUrl=$("#browseUrl").val(); if(browseUrl == null || browseUrl == ""){ $.messager.show({ title : '友好提示', msg : '瀏覽資源ID,不能為空！' }); return ; }else{ var data = $.toJSON(getCustomerSearch()); window.location.href="statResourceBrowseAction!exportStatResourceBrowse?queryJson="+data+"&excelTatol="+excelTatol; } }
二、Java請求處理
//站內搜尋查詢報表-Excel匯出 public void exportStatResourceBrowse() { ExportToExcelUtil<StatResourceBrowse> excelUtil = new ExportToExcelUtil<StatResourceBrowse>(); // 匯出總記錄數 excelTatol = request.getParameter("excelTatol") == null ? 10 : Integer.parseInt(request.getParameter("excelTatol")); OutputStream out = null; try { out = response.getOutputStream(); excelUtil.setResponseHeader(response,"資源瀏覽統計表"); String[] headers = { "會員id", "醫師職稱", "專業領域", "省","醫院等級id","醫院等級","操作途徑"}; String[] columns = { "customerId", "medicalTitle","areasExpertise", "province","hospitalLevelId","hospitalLevel","opSource"}; List<StatResourceBrowse> dataset = service.getList(getQueryJsonKeywordObject()); excelUtil.exportExcel( headers, columns, dataset, out, request, ""); } catch (Exception e1) { e1.printStackTrace(); } finally { try { out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } } }
三、POI匯出excle工具類
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.lang.reflect.Method; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Collection; import java.util.Date; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFClientAnchor; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFPatriarch; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.hssf.util.Region; import org.apache.poi.ss.usermodel.Workbook; import org.compass.core.util.CollectionUtils; /** * 2015-4-29 * DES:POI匯出Excel * author:JiBaoLe */ public class ExportToExcelUtil<T> { //每次設定匯出數量 public static int NUM=5000; public static String title=""; /** * 匯出Excel的方法 * @param title excel中的sheet名稱 * @param headers 表頭 * @param result 結果集 * @param out 輸出流 * @param pattern 時間格式 * @throws Exception */ public void exportExcel( String[] headers,String[] columns, List<T> result, OutputStream out,HttpServletRequest request, String pattern) throws Exception{ File zip = new File(request.getRealPath("/files") + "/" +getFileName() + ".zip");// 壓縮檔案 int n=0; if (!CollectionUtils.isEmpty(result)) { if (result.size() % NUM == 0) { n = result.size() / NUM; } else { n = result.size() / NUM + 1; } }else{ n=1; } List<String> fileNames = new ArrayList();// 用於存放生成的檔名稱s //檔案流用於轉存檔案 for (int j = 0; j < n; j++) { Collection<T> result1=null; //切取每5000為一個匯出單位，儲存一個檔案 //對不足5000做處理； if (!CollectionUtils.isEmpty(result)) { if (j == n - 1) { if (result.size() % NUM == 0) { result1 = result.subList(5000 * j, 5000 * (j + 1)); } else { result1 = result.subList(5000 * j, 5000 * j + result.size() % NUM); } } else { result1 = result.subList(5000 * j, 5000 * (j + 1)); } } // 宣告一個工作薄 Workbook workbook = new HSSFWorkbook(); // 生成一個表格 HSSFSheet sheet = (HSSFSheet) workbook.createSheet(title); // 設定表格預設列寬度為18個位元組 sheet.setDefaultColumnWidth((short)18); String file = request.getRealPath("/files") + "/" + getFileName() + "-" +j+ ".xls"; fileNames.add(file); FileOutputStream o = new FileOutputStream(file); // 生成一個樣式 HSSFCellStyle style = (HSSFCellStyle) workbook.createCellStyle(); // 設定這些樣式 style.setFillForegroundColor(HSSFColor.GOLD.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 生成一個字型 HSSFFont font = (HSSFFont) workbook.createFont(); font.setColor(HSSFColor.VIOLET.index); //font.setFontHeightInPoints((short) 12); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字型應用到當前的樣式 style.setFont(font); // 指定當單元格內容顯示不下時自動換行 style.setWrapText(true); // 宣告一個畫圖的頂級管理器 HSSFPatriarch patriarch = sheet.createDrawingPatriarch(); // 產生表格標題行 //表頭的樣式 HSSFCellStyle titleStyle = (HSSFCellStyle) workbook.createCellStyle();// 建立樣式物件 titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中 titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 // 設定字型 HSSFFont titleFont = (HSSFFont) workbook.createFont(); // 建立字型物件 titleFont.setFontHeightInPoints((short) 15); // 設定字型大小 titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 設定粗體 // titleFont.setFontName("黑體"); // 設定為黑體字 titleStyle.setFont(titleFont); sheet.addMergedRegion(new Region(0,(short)0,0,(short)(headers.length-1)));//指定合併區域 HSSFRow rowHeader = sheet.createRow(0); HSSFCell cellHeader = rowHeader.createCell((short)0); //只能往第一格子寫資料，然後應用樣式，就可以水平垂直居中 HSSFRichTextString textHeader = new HSSFRichTextString(title); cellHeader.setCellStyle(titleStyle); cellHeader.setCellValue(textHeader); HSSFRow row = sheet.createRow(1); for (int i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell((short)i); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(headers[i]); cell.setCellValue(text); } // 遍歷集合資料，產生資料行 if(result1 != null){ int index = 2; for(T t:result1){ row = sheet.createRow(index); index++; for(short i = 0; i < columns.length; i++) { HSSFCell cell = row.createCell(i); String fieldName = columns[i]; String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1); Class tCls = t.getClass(); Method getMethod = tCls.getMethod(getMethodName, new Class[]{}); Object value = getMethod.invoke(t, new Class[]{}); String textValue = null; if(value == null) { textValue = ""; }else if (value instanceof Date) { Date date = (Date) value; SimpleDateFormat sdf = new SimpleDateFormat(pattern); textValue = sdf.format(date); } else if (value instanceof byte[]) { // 有圖片時，設定行高為60px; row.setHeightInPoints(60); // 設定圖片所在列寬度為80px,注意這裡單位的一個換算 sheet.setColumnWidth(i, (short) (35.7 * 80)); byte[] bsValue = (byte[]) value; HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6, index); anchor.setAnchorType(2); patriarch.createPicture(anchor, workbook.addPicture( bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG)); } else{ //其它資料型別都當作字串簡單處理 textValue = value.toString(); } if(textValue!= null){ Pattern p = Pattern.compile("^//d+(//.//d+)?$"); Matcher matcher = p.matcher(textValue); if(matcher.matches()){ //是數字當作double處理 cell.setCellValue(Double.parseDouble(textValue)); }else{ HSSFRichTextString richString = new HSSFRichTextString(textValue); cell.setCellValue(richString); } } } } } workbook.write(o); File srcfile[] = new File[fileNames.size()]; for (int i = 0, n1 = fileNames.size(); i < n1; i++) { srcfile[i] = new File(fileNames.get(i)); } ZipFiles(srcfile, zip); FileInputStream inStream = new FileInputStream(zip); byte[] buf = new byte[4096]; int readLength; while (((readLength = inStream.read(buf)) != -1)) { out.write(buf, 0, readLength); } inStream.close(); } } //獲取檔名字 public static String getFileName(){ // 檔名獲取 Date date = new Date(); SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss"); String f = title + format.format(date); return f; } //壓縮檔案 public static void ZipFiles(java.io.File[] srcfile, java.io.File zipfile) { byte[] buf = new byte[1024]; try { ZipOutputStream out = new ZipOutputStream(new FileOutputStream( zipfile)); for (int i = 0; i < srcfile.length; i++) { FileInputStream in = new FileInputStream(srcfile[i]); out.putNextEntry(new ZipEntry(srcfile[i].getName())); int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } out.closeEntry(); in.close(); } out.close(); } catch (IOException e) { e.printStackTrace(); } } /** 設定響應頭 */ public void setResponseHeader(HttpServletResponse response,String fileName) { try { this.title=fileName; response.reset();// 清空輸出流 response.setContentType("application/octet-stream;charset=UTF-8"); response.setHeader("Content-Disposition", "attachment;filename=" +new String(this.title.getBytes("GB2312"), "8859_1") + ".zip"); response.addHeader("Pargam", "no-cache"); response.addHeader("Cache-Control", "no-cache"); } catch (Exception ex) { ex.printStackTrace(); } } }
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