以流的方式在html页面上显示图片

  以流的形式显示图片主要把图片转换成字符流然后传入ServletOutputStream

java代码

public static void writeImage(String path, HttpServletResponse response) throws IOException {
		File file = new File(path);
		if (!file.exists())
			return;
		BufferedInputStream buf = null;
		ServletOutputStream out = null;
		try{
			buf = new BufferedInputStream(new FileInputStream(file));
			out = response.getOutputStream();
			byte[] buffer = new byte[10000];
			while(buf.read(buffer) != -1){
				out.write(buffer);
			}
			out.flush();
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			if(null != buf)
				buf.close();
			if(null != out)
				out.close();
		}
	}

html代码

<img src="<%=request.getContextPath%>/user/image.do"/>