服务器上图片的存储

来源：互联网发布：视频剪辑配音软件编辑：程序博客网时间：2024/05/01 03:32

1、图片再服务器上的存储形式：图片存在磁盘文件中，数据库保存图片的存储路径

String bitmapStr = request.getParameter("bitmap");String bitmapPath = null;<span style="white-space:pre"></span>//对客户端传的图片字符串进行解码<span style="white-space:pre"></span>try{

<span style="white-space:pre"></span>byte[] picture = new BASE64Decoder().decodeBuffer(bitmapStr);for(int i=0; i<picture.length; i++){<span style="white-space:pre"></span>if(picture[i] < 0){picture[i] += 256;}}//将图片存入文件中String filePath = "E:\\picture\\test\\";String pictureName = "p" + idStr +".png";File pictureFile = new File(filePath,pictureName);bitmapPath = filePath + pictureName;//数据库保存图片路径FileOutputStream fileStream = new FileOutputStream(pictureFile);fileStream.write(picture);fileStream.flush();fileStream.close();}catch(Exception e){<span style="white-space:pre"></span>e.printStackTrace();}

2、从服务器返回数据到客户端

list = pDao.findAll();//获取数据库中的数据Person2 person = null;String filePath = null;String bitmapStr = null;for(int i=0; i<list.size(); i++){person = (Person2)list.get(i);filePath = person.getPicture();File file = new File(filePath);//从数据库中保存的图片路径读取图片到ByteArrayOutputStream,再转换成字节数组FileInputStream fileStream = new FileInputStream(file);ByteArrayOutputStream baos = new ByteArrayOutputStream();int b;while((b = fileStream.read()) != -1){baos.write(b);}byte[] buffer = baos.toByteArray(); bitmapStr = Base64.encode(buffer, buffer.length);//将图片的字节数组转换成字符串，传回客户端          person.setPicture(bitmapStr);<span style="font-family: Arial, Helvetica, sans-serif;">//设置传回去的person图片字符串</span>

<span style="font-family: Arial, Helvetica, sans-serif;">}</span>

3、删除文件中的图片

String pictureStr = person.getPicture();     //获取person中图片的路径File file = new File(pictureStr);file.delete();      //直接删除路径对应的文件

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