poi 導出Excel
阿新 • • 發佈：2018-10-08
建行 合並 -s org vertica pad reat 工具類 int
報表的導出是功能實現的重要的一個環節，我們今天就探究如何用poi 實現報表的導出Excel
1引入poi
<!--poi begin--> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>${poi.version}</version> </dependency><dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>${poi.version}</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>${poi.version}</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId><version>${poi.version}</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-excelant</artifactId> <version>${poi.version}</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-examples</artifactId> <version>${poi.version}</version> </dependency> <!--end-->
2 選擇導出的Excel 是什麽格式的，這裏我們選擇Excel 2003 的（Poi解析2003時使用的是HSSFCell，而2007的則是 XSSFCell）
2.1 創建文檔
HSSFWorkbook wb = new HSSFWorkbook();
2.2 創建文檔的樣式
//創建樣式對象
HSSFCellStyle style=wb.createCellStyle(); //創建字體對象 HSSFFont font=wb.createFont(); //設置為宋體 font.setFontName("宋體"); //設置字體大小 font.setFontHeightInPoints((short)10); //左邊框 style.setBorderLeft(BorderStyle.THIN); //右邊框 style.setBorderRight(BorderStyle.THIN); //上邊框 style.setBorderTop(BorderStyle.THIN); //下邊框 style.setBorderBottom(BorderStyle.THIN); //垂直居中 style.setVerticalAlignment(VerticalAlignment.CENTER); //字體居中 註：//style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//左右居中--廢棄
style.setAlignment(HorizontalAlignment.CENTER);
//樣式字體
style.setFont(font);
//自動換行
style.setWrapText(true);
//單元格不鎖定
style.setLocked(false);
2.3 創建表格 註意 行列從0 開始
//創建sheet
HSSFSheet sheet = wb.createSheet();
//合並單元格
//合並單元格（必須先合並在創建行列） 參數 --開始行，結束行，開始列，結束列
sheet.addMergedRegion(new CellRangeAddress(2, 3, 0, 4)); sheet.addMergedRegion(new CellRangeAddress(4, 4, 0, 1));
//設置行列（合並的單元格只用創建賦值第一個單元格就可以了）
（合並的單元格只用創建賦值第一個單元格就可以了）
//創建第三行
HSSFRow row2 = sheet.createRow(2);
//創建第三行第一列 HSSFCell cell2q0 = row2.createCell(0);
//賦值 cell2q0.setCellValue("報表");
//為這個單元格設置樣式
cell2q0.setCellStyle(style);
//設置行高寬
//設置第0 行列的高寬
sheet.setColumnWidth(0, 20*256); row=sheet.getRow(0); row.setHeight((short) (20*20));
//打印
HSSFPrintSetup print = sheet.getPrintSetup(); print.setLandscape(true); print.setScale((short) 80); print.setFitHeight((short) 4); print.setPaperSize(HSSFPrintSetup.A4_PAPERSIZE); String filename = 報表.xls"; ExeclUtils.getFile(response, wb, filename);
3 ExeclUtils 工具類
package com.prison.common.poi; import com.prison.common.util.ImageHelper; import org.apache.poi.hssf.usermodel.*; import org.apache.poi.ss.usermodel.BorderStyle; import org.apache.poi.ss.usermodel.HorizontalAlignment; import org.apache.poi.ss.usermodel.VerticalAlignment; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.usermodel.XSSFCellStyle; import org.apache.poi.xssf.usermodel.XSSFFont; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.util.HashMap; public class ExeclUtils { public static HSSFCellStyle getStyle(HSSFWorkbook wb) { HSSFCellStyle style=wb.createCellStyle(); HSSFFont font=wb.createFont(); font.setFontName("宋體"); font.setFontHeightInPoints((short)10); style.setBorderLeft(BorderStyle.THIN); style.setBorderRight(BorderStyle.THIN); style.setBorderTop(BorderStyle.THIN); style.setBorderBottom(BorderStyle.THIN); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setAlignment(HorizontalAlignment.CENTER); style.setFont(font); style.setWrapText(true); style.setLocked(false); return style; } public static HSSFCellStyle getCellStyle(HSSFWorkbook wb, int fontSize, int align, int verticalAlign) { HSSFCellStyle style=wb.createCellStyle(); HSSFFont font=wb.createFont(); font.setFontName("宋體"); font.setFontHeightInPoints((short)10); style.setBorderLeft(BorderStyle.THIN); style.setBorderRight(BorderStyle.THIN); style.setBorderTop(BorderStyle.THIN); style.setBorderBottom(BorderStyle.THIN); switch (align) { case 1: style.setAlignment(HorizontalAlignment.LEFT); break; case 2: style.setAlignment(HorizontalAlignment.CENTER); break; default: style.setAlignment(HorizontalAlignment.RIGHT); break; } switch (align) { case 1: style.setVerticalAlignment(VerticalAlignment.TOP); break; case 2: style.setVerticalAlignment(VerticalAlignment.CENTER); break; default: style.setVerticalAlignment(VerticalAlignment.BOTTOM); break; } style.setFont(font); style.setWrapText(true); style.setLocked(false); return style; } public static void setcellStyle(HSSFCellStyle style, int endColNum, HSSFSheet sheet, int beginRowNum, int endRowNum, HashMap<Integer, String[]> map) { String[] str; HSSFCell cell; HSSFRow row; for (int i=beginRowNum;i<endRowNum;i++) { row=sheet.createRow(i); str=map.get(i); for(int j=0;j<endColNum;j++) { cell=row.createCell(j); cell.setCellStyle(style); if (str!=null&&str.length>j) { cell.setCellValue(str[j]); }else { cell.setCellValue(""); } } } } public static void setSpecialCellStyle(HSSFCellStyle style, int rowNum, HSSFSheet sheet, int colNum) { HSSFCell cell; HSSFRow row; row =sheet.getRow(rowNum); cell=row.getCell(colNum); cell.setCellStyle(style); cell.setCellValue(cell.getStringCellValue()); } public static void setWidth(HSSFSheet sheet, int colNum, int width) { for(int i=0;i<colNum;i++) { sheet.setColumnWidth(i, width*256); } } public static void setCellMerge(HSSFSheet sheet, String[] str) { for(int i=0;i<str.length;i++) { sheet.addMergedRegion(CellRangeAddress.valueOf(str[i])); } } public static void setRowHeight(HSSFSheet sheet, int beginRowNum, int endRowNum, int height) { HSSFRow row ; for(int i=beginRowNum;i<endRowNum;i++) { row=sheet.getRow(i); row.setHeight((short) (height*20)); } } public static void setCellWidth(HSSFSheet sheet, int beginCelNum, int endCelNum, int width) { for(int i=beginCelNum;i<endCelNum;i++) { sheet.setColumnWidth(i, width*256); } } public static void getFile(HttpServletResponse response, HSSFWorkbook wb , String fileName) { BufferedInputStream bis = null; BufferedOutputStream bos = null; ServletOutputStream out=null; InputStream is=null; ByteArrayOutputStream os=null; try { String filename=fileName; response.setContentType("application/vnd.ms-excel;charset=utf-8"); response.addHeader("Content-Disposition", "attachment;filename=" + new String((filename).getBytes(), "iso-8859-1") ); os= new ByteArrayOutputStream(); wb.write(os); byte[] content = os.toByteArray(); is = new ByteArrayInputStream(content); out = response.getOutputStream(); bis = new BufferedInputStream(is); bos = new BufferedOutputStream(out); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff, 0, bytesRead); } } catch (Exception e) { e.printStackTrace(); }finally { ImageHelper.closeIO(bis,bos); ImageHelper.closeIO(is,os); ImageHelper.closeIO(null,out); } } public static XSSFCellStyle getXSSFStyle(XSSFWorkbook wb) { XSSFCellStyle style=wb.createCellStyle(); XSSFFont font=wb.createFont(); font.setFontName("宋體"); font.setFontHeightInPoints((short)12); style.setBorderLeft(BorderStyle.THIN); style.setBorderRight(BorderStyle.THIN); style.setBorderTop(BorderStyle.THIN); style.setBorderBottom(BorderStyle.THIN); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setAlignment(HorizontalAlignment.CENTER); style.setFont(font); style.setWrapText(true); style.setLocked(false); return style; } }
poi 導出Excel