代码如下：

//读取本地图片输入流
FileInputStream inStream = new FileInputStream("D:/image/123.jpg");//byte数组用于存放图片字节数据
byte[] buff = new byte[inSteam.available()];inStream.read(buff);
inStream.close();//设置发送到客户端的响应内容类型
response.setContentType("image/*");OutputStream outStream = response.getOutputStream();
out.write(buff);
out.close();