easyPoi 导出word文档内存变大

前言，其实这个功能已经实现好久了，但是由于现场图片太大一张差不多4M，一个word一共5张图片，搞得导出的word120多M，下载缓慢，且占用内存大！到现在也不知道为为什么图片被导入到word中会变成17M。但总归找到了解决的办法！也很nice

贴上我的代码，主要是在构造ImageEntity实例的时候做了一下处理，之前是直接给url去获取图片，现在先获取图片，然后通过流的形式构造ImageEntity

     public ImageEntity getImageEntity(String type, Map<String, Object> photoes) {
        ImageEntity image = new ImageEntity();
        float height = 0;
        if (photoes.get(type) != null) {
            //拿到图片，并且获取图片大小
            String url = (String) photoes.get(type);
            File picture = new File(url);
            InputStream in = null;
            try {
                BufferedImage sourceImg = ImageIO.read(new FileInputStream(picture));
                float proportion = (float) sourceImg.getHeight() / sourceImg.getWidth();
                height = proportion * 85;

            //将图片转化为流
                in = new BufferedInputStream(new FileInputStream(new File(url)));
                int len = 0;
                byte[] buffer = new byte[1024];

                ByteArrayOutputStream output = new ByteArrayOutputStream();
                while((len = in.read(buffer)) > 0) {
                    output.write(buffer, 0, len);
                }
                image.setData(output.toByteArray());
                in.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

        }

        image.setHeight((int) height);
        image.setWidth(85);
        image.setUrl((String) photoes.get(type));
        image.setType(ImageEntity.Data);


        return image;
    }

下面是demo

  Map<String, Object> map = new HashMap<String, Object>();
            map.put("department", "Easypoi");
            map.put("person", "JueYue");
            ImageEntity image = new ImageEntity();
            image.setHeight(119);
            image.setWidth(89);
            image.setUrl("C:\\Users\\ThinkPad\\Pictures\\1_20191008_014856_35b6ebca8c85472f82f4f0b2354e3107.png");
            image.setType(ImageEntity.URL);
            map.put("testCode", image);
            map.put("testCode1", image);
            map.put("testCode2", image);
            map.put("testCode3", image);
            map.put("testCode4", image);


            try {
                XWPFDocument doc = WordExportUtil.exportWord07(
                        "E:\\dsmFile/111.docx", map);// 模板相对路径，可放到resource下
                FileOutputStream fos = new FileOutputStream("E:\\dsmFile\\image.docx");
                doc.write(fos);
                fos.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

后续 ，谁知道这是为啥啊