SSM框架 Excel导出(Spring+SpringMVC+Mybatis)

SSM框架 (Spring+SpringMVC+Mybatis) Excel导出

实现从数据库(MySql)查寻数据，写入excle中并导出

第一种方式（推荐）

<不会再项目下生成多于文件夹，代码更简便>

// 导出图书  
	@RequestMapping(value = "/outPutBook/{ids}", method = RequestMethod.GET)
	public void
	outPutBook(@PathVariable(value = "ids") String ids1,HttpServletResponse response) throws IOException {
		 
		List<BookAndFenlei> list = null;
		String key = "";
		if (ids1.equals("a")) {//传入a 表示导出全部
			
			list = this.bookService.outPutBookAll();
			key = "全部";

		}else{ 
			//System.out.println(ids1);
			list = this.bookService.outPutBookIds(ids1);
			key = "勾选";

		}
		//创件一个工作蒲
		HSSFWorkbook Workbook = new HSSFWorkbook();
		//创建一个工作表
		HSSFSheet sheet = Workbook.createSheet(key + "图书信息表");
          
		sheet.setColumnWidth(7, 15 * 256); //设定列宽度
		//设置样式
		HSSFCellStyle style = Workbook.createCellStyle();
		style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
		HSSFFont font = Workbook.createFont();
		font.setBold(true);
		font.setColor(HSSFColor.DARK_RED.index);
		style.setFont(font);
		String[] title = { "编号", "分类编号", "图书名", "图书价格", "出版社", "作者", "库存" };
		HSSFRow row = sheet.createRow(0);//从0开始
		for (int i = 0; i < title.length; i++) {
			HSSFCell cell = row.createCell(i);
			cell.setCellStyle(style);
			cell.setCellValue(title[i]);
		}
		HSSFCellStyle style1 = Workbook.createCellStyle();
		style1.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 居中
		// 设置字体样式
		for (int i = 0; i < list.size(); i++) { 

			HSSFRow row1 = sheet.createRow(i + 1);
			BookAndFenlei book = list.get(i);

			HSSFCell cell1 = row1.createCell(0);
			cell1.setCellValue(book.getBid());

			HSSFCell cell2 = row1.createCell(1);
			cell2.setCellValue(book.getFenlei().getFname());

			HSSFCell cell3 = row1.createCell(2);
			cell3.setCellValue(book.getBname());

			HSSFCell cell4 = row1.createCell(3);
			cell4.setCellValue(book.getMoney());

			HSSFCell cell5 = row1.createCell(4);
			cell5.setCellValue(book.getPress());

			HSSFCell cell6 = row1.createCell(5);
			cell6.setCellValue(book.getAuthor());

			HSSFCell cell7 = row1.createCell(6);
			cell7.setCellValue(book.getStock());

			cell1.setCellStyle(style1);
			cell2.setCellStyle(style1);
			cell3.setCellStyle(style1);
			cell4.setCellStyle(style1);
			cell5.setCellStyle(style1);
			cell6.setCellStyle(style1);
			cell7.setCellStyle(style1);

		}
		 
		 String fname = key +"图书信息表.xls"; 
		response.setContentType("application/octet-stream");
		response.setHeader("Content-disposition", "attachment;filename="+new String(fname.getBytes("UTF-8"), "iso-8859-1"));
		// new String(fname.getBytes("UTF-8"), "iso-8859-1") 解决中文名称乱码问题
		response.flushBuffer();
		 Workbook.write(response.getOutputStream());
		 
	}

第二种方式

＜可能会在项目下生成多的文件夹＞

// 导出excle   Handler里代码
	@RequestMapping(value = "/outPutBook/{ids}", method = RequestMethod.GET)
	public  ResponseEntity<byte[]> 
	outPutBook(@PathVariable(value = "ids") String ids1, HttpServletRequest request,
			HttpSession session) throws IOException  {
		 
		List<BookAndFenlei> list = null;
		String key = "";
		if (ids1.equals("a")) {//传入a 表示导出全部
			
			list = this.bookService.outPutBookAll();
			key = "全部";

		}else{ 
			//System.out.println(ids1);
			list = this.bookService.outPutBookIds(ids1);
			key = "勾选";

		}
		//创件一个工作蒲
		HSSFWorkbook Workbook = new HSSFWorkbook();
		//创建一个工作表
		HSSFSheet sheet = Workbook.createSheet(key + "图书信息表");
          
		sheet.setColumnWidth(7, 15 * 256); //设定列宽度
		//设置样式
		HSSFCellStyle style = Workbook.createCellStyle();
		style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
		HSSFFont font = Workbook.createFont();
		font.setBold(true);
		font.setColor(HSSFColor.DARK_RED.index);
		style.setFont(font);
		String[] title = { "编号", "分类编号", "图书名", "图书价格", "出版社", "作者", "库存" };
		HSSFRow row = sheet.createRow(0);//从0开始
		for (int i = 0; i < title.length; i++) {
			HSSFCell cell = row.createCell(i);
			cell.setCellStyle(style);
			cell.setCellValue(title[i]);
		}
		HSSFCellStyle style1 = Workbook.createCellStyle();
		style1.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 居中
		// 设置字体样式
		for (int i = 0; i < list.size(); i++) { //把list数据放入

			HSSFRow row1 = sheet.createRow(i + 1);
			BookAndFenlei book = list.get(i);

			HSSFCell cell1 = row1.createCell(0);
			cell1.setCellValue(book.getBid());

			HSSFCell cell2 = row1.createCell(1);
			cell2.setCellValue(book.getFenlei().getFname());

			HSSFCell cell3 = row1.createCell(2);
			cell3.setCellValue(book.getBname());

			HSSFCell cell4 = row1.createCell(3);
			cell4.setCellValue(book.getMoney());

			HSSFCell cell5 = row1.createCell(4);
			cell5.setCellValue(book.getPress());

			HSSFCell cell6 = row1.createCell(5);
			cell6.setCellValue(book.getAuthor());

			HSSFCell cell7 = row1.createCell(6);
			cell7.setCellValue(book.getStock());

			cell1.setCellStyle(style1);
			cell2.setCellStyle(style1);
			cell3.setCellStyle(style1);
			cell4.setCellStyle(style1);
			cell5.setCellStyle(style1);
			cell6.setCellStyle(style1);
			cell7.setCellStyle(style1);

		}
		File f = new File(key +"图书信息表.xls");
		 
		OutputStream outputStream = new FileOutputStream(f);
		// 把工作蒲的内容写入文件
		Workbook.write(outputStream);
      
		 
		// 响应浏览器，
	        HttpHeaders headers = new HttpHeaders();
	        //下载显示的文件名，解决中文名称乱码问题
	        String downloadFilelName = new String(f.getName().getBytes("UTF-8"), "iso-8859-1");
	        //通知浏览器以attachment下载
	        headers.setContentDispositionFormData("attachment", downloadFilelName);
	        //application/octet-stream ： 二进制流数据 ,最常见的文件下载 
	        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
	        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(f),
	                headers, HttpStatus.CREATED);
      
		 
	}

//serviceImpl  @Service里代码
@Override
	@Transactional
	public List<BookAndFenlei> outPutBookIds(String ids1) {
		// TODO Auto-generated method stub
		String[] a = ids1.split(","); List<Integer> list =new ArrayList<Integer>();
	 for (int i = 0; i < a.length; i++) {
           
			list.add(Integer.parseInt(a[i]));
			 
		}
	return this.bookMapper.selectOutPutIds(list);
}

//xxx.xml 里代码
  <select id="selectOutPutIds"  parameterType="list" resultMap="BookAndFenlei">	
		select * from book,fenlei 
    
     <where>
		book.flid=fenlei.fid and bid in
		<foreach collection="list" item="id" open="(" separator="," close=")" >
		     #{id}
	 foreach>
	 
   where> 
		 order by book.bid desc
	select>