1.xls一个sheet只能装65536行,多余则报错
poi包导出或写入excel超出65536报错:
java.lang.IllegalArgumentException: Invalid row number (65536) outside allow
解决:每6w分一个sheet,关键代码红色部分
import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFDataFormat; 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.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.Font; import org.apache.poi.ss.util.CellRangeAddress; import com.google.gson.JsonArray; import com.google.gson.JsonObject; public class ExcelUtil { public static HSSFWorkbook getHSSFWorkbook(String sheetName, JsonArray title, String[][] values, HSSFWorkbook wb) { // 第一步,创建一个HSSFWorkbook,对应一个Excel文件 if (wb == null) { wb = new HSSFWorkbook(); } // -个sheet限制存65536条,此处仅存60000 System.out.println(values.length); final int sheetNum = (int) Math.ceil((float) values.length / 60000); for (int n = 1; n <= sheetNum; n++) { // 第二步,在workbook中添加一个sheet,对应Excel文件中的sheet final HSSFSheet sheet = wb.createSheet(sheetName + "_" + n); System.out.println("sheetName" + sheetName + "_" + n); sheet.setDefaultColumnWidth(12); // 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; // 第四步,创建单元格,并设置值表头样式 final HSSFCellStyle headerStyle = wb.createCellStyle(); headerStyle.setAlignment(CellStyle.ALIGN_CENTER); // 水平居中 headerStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);// 垂直居中 final Font fontStyle = wb.createFont(); // 字体样式 fontStyle.setBoldweight(Font.BOLDWEIGHT_BOLD); // 加粗 fontStyle.setFontName("黑体"); // 字体 fontStyle.setFontHeightInPoints((short) 11); // 大小 // 将字体样式添加到单元格样式中 headerStyle.setFont(fontStyle); // 边框 headerStyle.setBorderBottom(CellStyle.BORDER_THIN); headerStyle.setBorderLeft(CellStyle.BORDER_THIN); headerStyle.setBorderRight(CellStyle.BORDER_THIN); headerStyle.setBorderTop(CellStyle.BORDER_THIN); // 普通单元格样式,边框,水平居中 final HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setAlignment(CellStyle.ALIGN_CENTER); // 水平居中 cellStyle.setBorderBottom(CellStyle.BORDER_THIN); cellStyle.setBorderLeft(CellStyle.BORDER_THIN); cellStyle.setBorderRight(CellStyle.BORDER_THIN); // cellStyle.setBorderTop(HSSFCellStyle.BORDER_THIN); final HSSFDataFormat df = wb.createDataFormat(); // 此处设置数据格式 cellStyle.setDataFormat(df.getFormat("#,#0.0")); // 小数点后保留两位,可以写contentStyle.setDataFormat(df.getFormat("#,#0.00")); // 声明列对象 HSSFCell cell = null; // 创建标题 JsonArray cellArray = new JsonArray(); JsonObject object = new JsonObject(); JsonObject temobj = new JsonObject(); int rowSkip = 0, cellSkip = 0; String tempCell = ""; for (int rowId = 0; rowId < title.size(); rowId++) { row = sheet.createRow(rowId); object = title.get(rowId).getAsJsonObject(); cellArray = object.get("row").getAsJsonArray(); // colId为excel列索引,cellId为行标题值的数组索引,cellId遇到当前单元格已使用时,填充至下一个可使用的单元格 for (int colId = 0, cellId = 0; cellId < cellArray.size(); colId++) { cell = row.createCell(colId); cell.setCellStyle(headerStyle); if (isMergedRegion(sheet, rowId, colId)) { continue; } temobj = cellArray.get(cellId).getAsJsonObject(); tempCell = temobj.get("cellvalue").toString().replace(""", ""); try { // System.out.println(tempCell); tempCell = new String(tempCell.getBytes("UTF-8"), "ISO-8859-1"); // System.out.println(tempCell); tempCell = new String(tempCell.getBytes("ISO-8859-1"), "UTF-8"); // System.out.println(tempCell); } catch (final Exception e) { e.printStackTrace(); } cell.setCellValue(tempCell); // System.out.println(cell); // System.out.println(cell.getStringCellValue()); cell.setCellStyle(headerStyle); cellId++; // 合并单元格 rowSkip = temobj.get("rowspan").getAsInt(); cellSkip = temobj.get("colspan").getAsInt(); // System.out.println(rowSkip + "=skip==" + cellSkip); if (rowSkip > 1 && rowSkip-- > 0 || cellSkip > 1 && cellSkip-- > 0) {// 用于起始行列计算时需减1 final CellRangeAddress cra = new CellRangeAddress(rowId, rowId + rowSkip, colId, colId + cellSkip); // 起始行, 终止行, 起始列, 终止列 // 终止行, sheet.addMergedRegion(cra); } } } // 创建内容 -个sheet只能存65536条 for (int i = 0; i < 60000 && i < values.length - (n - 1) * 60000; i++) { row = sheet.createRow(title.size() + i); for (int j = 0; j < values[i].length; j++) { // 将内容按顺序赋给对应的列对象 cell = row.createCell(j); cell.setCellValue(values[(n - 1) * 60000 + i][j]); cell.setCellStyle(cellStyle); } } } return wb; } public static boolean isMergedRegion(HSSFSheet sheet, int row, int column) { final int sheetMergeCount = sheet.getNumMergedRegions(); for (int i = 0; i < sheetMergeCount; i++) { final CellRangeAddress range = sheet.getMergedRegion(i); final int firstColumn = range.getFirstColumn(); final int lastColumn = range.getLastColumn(); final int firstRow = range.getFirstRow(); final int lastRow = range.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { return true; } } } return false; } }