java 生成excel文件和pdf 保存本地或者返回http二进制流

java 生成Excel及pdf 返回http和保存本地实例记录

先看效果图

1.生成效果图

2.excel maven包配置

      
        org.apache.poi
        poi
        3.11
     

3.pdf maven包

	`
        com.lowagie
        itext
        2.1.7
    `

4.exce生成：

4.1核心方法如下，

/**
     * 创建excel表格
     *
     * @param tableName sheet表名
     * @return HSSFWorkbook
     */
    public static HSSFWorkbook getExcel(Map resultMap, String tableName) {

        //创建HSSFWorkbook对象(excel的文档对象)
        HSSFWorkbook wb = new HSSFWorkbook();
        //建立新的sheet对象（excel的表单）
        HSSFSheet sheet = wb.createSheet(tableName);
        //设置表头
        //创建第一行，参数为行索引(excel的行)，可以是0～65535之间的任何一个
        HSSFRow row = sheet.createRow(0);
        //创建单元格并设置单元格内容

        List rowList = resultMap.get("rowList");
        List dataList = resultMap.get("dataList");
        System.out.println("数据条数："+dataList.size());

        //插入表头单元格内容,表头数据
        for (int i = 0; i < rowList.size(); i++) {
            row.createCell(i).setCellValue(rowList.get(i).toString().trim());
        }
        //插入行数据
        for (int i = 0; i < dataList.size(); i++) {
            HSSFRow row1 = sheet.createRow(i + 1);
            Map map2 = (Map) dataList.get(i);
            for (Map.Entry en : map2.entrySet()) {
                for (int j = 0; j < rowList.size(); j++) {
                    if (rowList.get(j).equals(en.getKey())) {
                        if (en.getValue() == "" || en.getValue() == null) {
                            row1.createCell(j).setCellValue("");
                        } else {
                            row1.createCell(j).setCellValue(en.getValue());
                        }
                    }
                }

            }
        }
        return wb;
    }

4.2 测试主方法：

public static void main(String[] args) {
        //模拟数据
        List> list = new ArrayList>();
        Map excl = new HashMap<>();
        List rowlist = new ArrayList<>();
        rowlist.add("code");
        rowlist.add("name");
        excl.put("rowList", rowlist);
        excl.put("dataList", list);
        for (int i=0;i<5;i++){
            HashMap map=new HashMap<>();
            map.put("code",5000+i+" ");
            map.put("name","探"+i);
            list.add(map);
        }
        
        //生成文件
        HSSFWorkbook excel = getExcel(excl, "sheet_name");
        
        //保存在本地
        File file = new File("D:\\");
        OutputStream stream = null;
        try {
            stream = new FileOutputStream(new File(file, "filName.xls"));
            excel.write(stream);
            stream.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

4.3返回二进制流

public static void excelOutToHttpResponse(HttpServletResponse response, String tableName, HSSFWorkbook dataExp) throws IOException {
        String fileName = tableName + "__DataExp";
        OutputStream output = response.getOutputStream();
        response.reset();
        response.setHeader("Content-disposition", "attachment; filename=" + fileName + ".xls");
        response.setContentType("application/msexcel");
        dataExp.write(output);
        output.close();
    }

5.pdf生成

DisplayData是我这边的数据实体类，也是创建table的时候也是根据导出数据多少列，列名是什么来创建的。根据自己需要调整即可。UserInfo是这边接口调用的时候带的参数，可以删。itext这边中文比较麻烦，

5.1核心方法生成数据table：

/**
     * 编辑pdf的数据
     *
     * @return
     */
    public static Table getPdfDate(List dataList) {

        Table table = null;
        try {

            table = new Table(5);//构造一个size列的表格
            table.setBorderWidth(1);//边框线
            table.setPadding(2);

            int width11[] = {18, 18, 28, 18, 18};
            table.setWidths(width11);
            table.setWidth(560);
            table.setLocked(true);


            //创建字体,用于支持中文,一定要下载到字体的ttf文件放在,文件地址为fontAddress.
            BaseFont bfChinese = BaseFont.createFont(fontAddress, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
          //  BaseFont bfChinese = BaseFont.createFont("苹方 中等", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            Font fontChineseTitle = new Font(bfChinese, 10);

            Paragraph paragraph0 = new Paragraph("采集编号 ", fontChineseTitle);
            Phrase phrase = new Phrase(paragraph0);
            Cell header1 = new Cell(phrase);
            header1.setUseAscender(true);
            header1.setVerticalAlignment(Cell.ALIGN_MIDDLE);
            header1.setHorizontalAlignment(Cell.ALIGN_CENTER);
            table.addCell(header1);

            Cell header2 = new Cell(new Phrase(new Paragraph("显示名称", fontChineseTitle)));
            header2.setUseAscender(true);
            header2.setVerticalAlignment(Cell.ALIGN_MIDDLE);
            header2.setHorizontalAlignment(Cell.ALIGN_CENTER);
            table.addCell(header2);

            Cell header3 = new Cell(new Phrase(new Paragraph("采集时间", fontChineseTitle)));
            header3.setUseAscender(true);
            header3.setWidth(150);
            header3.setMaxLines(20);
            header3.setVerticalAlignment(Cell.ALIGN_MIDDLE);
            header3.setHorizontalAlignment(Cell.ALIGN_CENTER);
            table.addCell(header3);

            Cell header4 = new Cell(new Phrase(new Paragraph("采集温度", fontChineseTitle)));
            header4.setUseAscender(true);
            header4.setVerticalAlignment(Cell.ALIGN_MIDDLE);
            header4.setHorizontalAlignment(Cell.ALIGN_CENTER);
            table.addCell(header4);

            Cell header5 = new Cell(new Phrase(new Paragraph("采集湿度", fontChineseTitle)));
            header5.setUseAscender(true);
            header5.setVerticalAlignment(Cell.ALIGN_MIDDLE);
            header5.setHorizontalAlignment(Cell.ALIGN_CENTER);
            table.addCell(header5);
            // 一定要调用endHeaders方法结束表头，不然翻页的时候不会带过去。
            table.endHeaders();

            for (DisplayData dis : dataList) {
                //添加对应每一列的数值

                Cell c1 = new Cell(new Phrase(new Paragraph(dis.getInputName(), fontChineseTitle)));
                c1.setUseAscender(true);
                c1.setVerticalAlignment(Cell.ALIGN_MIDDLE);
                c1.setHorizontalAlignment(Cell.ALIGN_CENTER);
                table.addCell(c1);

                Cell c2 = new Cell(new Phrase(new Paragraph(dis.getDisplayName(), fontChineseTitle)));
                c2.setUseAscender(true);
                c2.setVerticalAlignment(Cell.ALIGN_MIDDLE);
                c2.setHorizontalAlignment(Cell.ALIGN_CENTER);
                table.addCell(c2);

                Cell c3 = new Cell(new Phrase(new Paragraph(sd.format(dis.getDataTime()), fontChineseTitle)));
                c3.setUseAscender(true);
                c3.setVerticalAlignment(Cell.ALIGN_MIDDLE);
                c3.setHorizontalAlignment(Cell.ALIGN_CENTER);
                table.addCell(c3);

                Cell c4 = new Cell(new Phrase(new Paragraph(dis.getTemperature() + "", fontChineseTitle)));
                c4.setUseAscender(true);
                c4.setVerticalAlignment(Cell.ALIGN_MIDDLE);
                c4.setHorizontalAlignment(Cell.ALIGN_CENTER);
                table.addCell(c4);

                Cell c5 = new Cell(new Phrase(new Paragraph(dis.getHumidity() + "", fontChineseTitle)));
                c5.setUseAscender(true);
                c5.setVerticalAlignment(Cell.ALIGN_MIDDLE);
                c5.setHorizontalAlignment(Cell.ALIGN_CENTER);
                table.addCell(c5);
            }
        } catch (BadElementException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return table;
    }

5.2 创建pdf文件及添加table数据

private static String pdfImport(UserInfo userInfo, String pageId, String inputName, String sTime, String eTime, HttpServletResponse response) throws Exception {
        //时间验证
        sTime = checkStart(sTime);
        eTime = checkEnd(eTime);
        ProbeMsg ProbeMsg = StaticDataContainer.getProbeMsg(inputName);
        //这里从数据库中获取数据list，根据自己的需要调整，前面table也是
        List dataList = commonService.getExpPdfData((getPagSql(pageId, ProbeMsg.getSrcTabName(), sTime, eTime)));

        Document document = new Document();

        try {
            java.util.Date date = new java.util.Date();
            SimpleDateFormat sd1 = new SimpleDateFormat("yyyy-MM-dd_HH_mm_ss");

            //保存在本地
            String file_name = inputName + sd1.format(date);
            String bakaddress = null;
            String adrees = "D:\\csr-auth\\";
            bakaddress = adrees + file_name + ".pdf";
            PdfWriter.getInstance(document, new FileOutputStream(bakaddress));
            System.out.println("ZZZ:::" + bakaddress);

           /* 返回http流
           response.setContentType("application/pdf");
            PdfWriter.getInstance(document, response.getOutputStream());*/
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式

            BaseFont bfChinese = BaseFont.createFont(fontAddress, BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);
            Font yourFont = new Font(bfChinese, 10);
            HeaderFooter footer = new HeaderFooter(new Phrase(2f,"页数-", yourFont),true);
            footer.setBorder(Rectangle.NO_BORDER);
            document.setFooter(footer);

            document.open();
            document.add(new Paragraph(" data export On: " + df.format(new Date())));
            document.add(new Paragraph(" export person: " + userInfo.getLoginName()));
            //添加table数据表
            Table table = getPdfDate(dataList);
            document.add(table);
        } catch (DocumentException de) {
            System.err.println(de.getMessage());
        } catch (IOException ioe) {
            System.err.println(ioe.getMessage());
        }
        document.close(); 
        return null;
    }

5.3 测试主方法

public static void main(String[] args) {
        HttpServletResponse response = null;
        StaticDataContainer.getInstance().loadStaticPobeMag();
        UserInfo user = new UserInfo();
        user.setLoginName("yizhimei");
        user.setUserName("一枝梅");
        user.setDeptId("66610b02-3c8f-432a-a334-fb74327adf25");
        user.setRoleId("palyer");
        try {

            // dataExp(user,"history_data_page","8AD0000101","2018-01-01 00:00:00","2018-11-20 00:00:00",response);
            pdfImport(user, "history_data_page", "8AD0000101", "2018-01-01 00:00:00", "2018-11-20 00:00:00", response);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

6 以上，部分地方根据项目情况微调即可。