springboot+poi匯出和匯入
阿新 • • 發佈：2018-11-19
1.匯入座標
<!-- excel2003使用的包 --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.11</version> </dependency> <!-- excel2007+使用的包 --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.11</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>3.11</version> </dependency>
2 poi 匯出的controller
package com.czxy.web.reportform; import com.czxy.common.DownloadUtil; import com.czxy.domain.teke_delivery.WayBill; import com.czxy.service.take_delivery.WayBillService; import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletResponse; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.Date; import java.util.List; @RestController @RequestMapping("/poi") public class PoiController { @Autowired private WayBillService wayBillService; @GetMapping("/exportXls") public void exportXls(HttpServletResponse response) throws Exception{ // 匯出 運單資訊 List<WayBill> wayBillList = wayBillService.findAll(); //1 建立工作簿 HSSFWorkbook 2003 XSSFWorkbook 2007 Workbook wb = new XSSFWorkbook(); //2 建立工作表 Sheet sheet = wb.createSheet(); // 設定列寬 sheet.setColumnWidth(0,10*256); sheet.setColumnWidth(1,10*256); sheet.setColumnWidth(2,10*256); sheet.setColumnWidth(3,20*256); sheet.setColumnWidth(4,20*256); sheet.setColumnWidth(5,20*256); sheet.setColumnWidth(6,20*256); sheet.setColumnWidth(7,20*256); sheet.setColumnWidth(8,20*256); /*** * 定義公共變數 */ int rowNo = 0,cellNo = 0; Row nRow = null; Cell nCell = null; /**************大標題*************/ //3 建立行 nRow = sheet.createRow(rowNo); // 設定行高 nRow.setHeightInPoints(36); //4 建立單元格 nCell = nRow.createCell(cellNo); //5 設定內容 nCell.setCellValue("bos系統運單資訊"+new Date().toLocaleString()); //6 設定內容格式 // 合併單元格 //引數1：起始行 引數2：終止行 引數3：起始列 引數4：終止列 sheet.addMergedRegion(new CellRangeAddress(0, 0, (short) 0, (short) 9)); // 橫向居中 + 水平居中 + 紅色宋體22號 nCell.setCellStyle(bigTitleCellStyle(wb)); /*************小標題輸出**************/ // 行號rowNo需要變化嗎 列需要變化嗎？ rowNo++; String[] titles = {"id","運單號","訂單號","寄件人姓名","寄件人電話","寄件人地址","收件人姓名","收件人電話","收件人地址"}; //3 建立行 nRow = sheet.createRow(rowNo); for (String title:titles){ //4 建立單元格 nCell = nRow.createCell(cellNo++);// 先建立cell單元格，然後在自增 //5 設定內容 nCell.setCellValue(title); //6 設定內容格式 nCell.setCellStyle(titleCellStyle(wb)); } /**************內容*************/ // 行號和列號需要變化？ rowNo++; for(WayBill wayBill:wayBillList){ cellNo=0; //3 建立行 nRow = sheet.createRow(rowNo++); //4 建立單元格 nCell = nRow.createCell(cellNo++); //5 設定內容 nCell.setCellValue(wayBill.getId()+""); //6 設定內容格式 nCell.setCellStyle(contentCellStyle(wb)); // wayBillNum nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getWayBillNum()); nCell.setCellStyle(contentCellStyle(wb)); //訂單號 nCell = nRow.createCell(cellNo++); nCell.setCellStyle(contentCellStyle(wb)); //發件人姓名 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getSendName()); nCell.setCellStyle(contentCellStyle(wb)); //發件人電話 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getSendMobile()); nCell.setCellStyle(contentCellStyle(wb)); //發件人地址 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getSendAddress()); nCell.setCellStyle(contentCellStyle(wb)); //收件人姓名 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getRecName()); nCell.setCellStyle(contentCellStyle(wb)); //收件人電話 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getRecMobile()); nCell.setCellStyle(contentCellStyle(wb)); //收件人地址 nCell = nRow.createCell(cellNo++); nCell.setCellValue(wayBill.getRecAddress()); nCell.setCellStyle(contentCellStyle(wb)); } /*************7 下載**********************/ DownloadUtil downloadUtil = new DownloadUtil(); ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); // 將wb寫入流 wb.write(byteArrayOutputStream); /** byteArrayOutputStream 將檔案內容寫入ByteArrayOutputStream response HttpServletResponse 寫入response returnName 返回的檔名 */ downloadUtil.download(byteArrayOutputStream,response,"bos運單表.xlsx"); } public CellStyle bigTitleCellStyle(Workbook wb){ // 橫向居中 + 水平居中 + 紅色宋體22號 CellStyle cellStyle = wb.createCellStyle(); // 橫向居中 cellStyle.setAlignment(CellStyle.ALIGN_CENTER); // 垂直居中 cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER); Font font = wb.createFont(); font.setFontHeight((short) 440); font.setColor(Font.COLOR_RED); font.setFontName("宋體"); cellStyle.setFont(font); return cellStyle; } public CellStyle titleCellStyle(Workbook wb){ // 宋體16號 傾斜 邊框線 水平垂直居中 Font font = wb.createFont(); font.setFontName("宋體"); font.setItalic(true); font.setBold(true); CellStyle cellStyle = wb.createCellStyle(); cellStyle.setFont(font); // 邊框線 cellStyle.setBorderTop(CellStyle.BORDER_THIN);// 細線 cellStyle.setBorderRight(CellStyle.BORDER_DASHED);//圓點.... cellStyle.setBorderBottom(CellStyle.BORDER_DOTTED);// 矩形的虛線_ _ _ _ _ cellStyle.setBorderLeft(CellStyle.BORDER_DOUBLE);// 雙線 // 橫向居中 cellStyle.setAlignment(CellStyle.ALIGN_CENTER); // 垂直居中 cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER); return cellStyle; } public CellStyle contentCellStyle(Workbook wb){ // 邊框線 水平垂直居中 CellStyle cellStyle = wb.createCellStyle(); // 邊框線 cellStyle.setBorderTop(CellStyle.BORDER_THIN);// 細線 cellStyle.setBorderRight(CellStyle.BORDER_THIN);// cellStyle.setBorderBottom(CellStyle.BORDER_THIN);// cellStyle.setBorderLeft(CellStyle.BORDER_THIN);// return cellStyle; } }
3.下載檔案的utils
package com.czxy.common; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; public class DownloadUtil { /** * @param filePath 要下載的檔案路徑 * @param returnName 返回的檔名 * @param response HttpServletResponse * @param delFlag 是否刪除檔案 */ protected void download(String filePath,String returnName,HttpServletResponse response,boolean delFlag){ this.prototypeDownload(new File(filePath), returnName, response, delFlag); } /** * @param file 要下載的檔案 * @param returnName 返回的檔名 * @param response HttpServletResponse * @param delFlag 是否刪除檔案 */ protected void download(File file,String returnName,HttpServletResponse response,boolean delFlag){ this.prototypeDownload(file, returnName, response, delFlag); } /** * @param file 要下載的檔案 * @param returnName 返回的檔名 * @param response HttpServletResponse * @param delFlag 是否刪除檔案 */ public void prototypeDownload(File file,String returnName,HttpServletResponse response,boolean delFlag){ // 下載檔案 FileInputStream inputStream = null; ServletOutputStream outputStream = null; try { if(!file.exists()) return; response.reset(); //設定響應型別 PDF檔案為"application/pdf"，WORD檔案為："application/msword"， EXCEL檔案為："application/vnd.ms-excel"。 response.setContentType("application/octet-stream;charset=utf-8"); //設定響應的檔名稱,並轉換成中文編碼 //returnName = URLEncoder.encode(returnName,"UTF-8"); returnName = response.encodeURL(new String(returnName.getBytes(),"iso8859-1")); //儲存的檔名,必須和頁面編碼一致,否則亂碼 //attachment作為附件下載；inline客戶端機器有安裝匹配程式，則直接開啟；注意改變配置，清除快取，否則可能不能看到效果 response.addHeader("Content-Disposition", "attachment;filename="+returnName); //將檔案讀入響應流 inputStream = new FileInputStream(file); outputStream = response.getOutputStream(); int length = 1024; int readLength=0; byte buf[] = new byte[1024]; readLength = inputStream.read(buf, 0, length); while (readLength != -1) { outputStream.write(buf, 0, readLength); readLength = inputStream.read(buf, 0, length); } } catch (Exception e) { e.printStackTrace(); } finally { try { outputStream.flush(); } catch (IOException e) { e.printStackTrace(); } try { outputStream.close(); } catch (IOException e) { e.printStackTrace(); } try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } //刪除原檔案 if(delFlag) { file.delete(); } } } /** * by tony 2013-10-17 * @param byteArrayOutputStream 將檔案內容寫入ByteArrayOutputStream * @param response HttpServletResponse 寫入response * @param returnName 返回的檔名 */ public void download(ByteArrayOutputStream byteArrayOutputStream, HttpServletResponse response, String returnName) throws IOException{ response.setContentType("application/octet-stream;charset=utf-8"); returnName = response.encodeURL(new String(returnName.getBytes(),"iso8859-1")); //儲存的檔名,必須和頁面編碼一致,否則亂碼 response.addHeader("Content-Disposition", "attachment;filename=" + returnName); response.setContentLength(byteArrayOutputStream.size()); ServletOutputStream outputstream = response.getOutputStream(); //取得輸出流 byteArrayOutputStream.writeTo(outputstream); //寫到輸出流 byteArrayOutputStream.close(); //關閉 outputstream.flush(); //刷資料 } }
4 匯入Excel檔案
public static void main(String[] args) throws Exception{
// 流讀取檔案
FileInputStream is = new FileInputStream(new File("d:\\area.xls"));
// 根據流建立檔案
Workbook wb = new HSSFWorkbook(is);
// 獲取sheet
Sheet sheet = wb.getSheetAt(0);
// 遍歷row
for(Row row:sheet){
// 第一行是標題，不需要讀取
if(row.getRowNum()==0){
continue;
}
// 當遇到空行，跳過
if(row.getCell(0)==null || StringUtils.isBlank(row.getCell(1).getStringCellValue())){
continue;
}
// 列印內容
System.out.print(row.getCell(0).getStringCellValue()+":");
System.out.print(row.getCell(1).getStringCellValue()+":");
System.out.print(row.getCell(2).getStringCellValue()+":");
System.out.print(row.getCell(3).getStringCellValue()+":");
System.out.println(row.getCell(4).getStringCellValue());
}
}