CSS background url http请求服务器绝对路径的图片

css 代码

background: url("http://<%=request.getHeader("host")%>/image/showBgImage") no-repeat 0 0;

controller 代码

    @RequestMapping("/image/showBgImage")
	public void showBgImage(HttpServletRequest request, HttpServletResponse response) {

        ServletOutputStream outputStream = null;
		FileInputStream inputStream = null;
		InputStream inputStreamTmp = null;
        

        //读取配置文件中配置的路径
        String path= WebConfigUtil.getConfiguration().getProperty("imageName");


		try {
			File picFile = new File(path);
			
			response.setContentType("image/jpeg; charset=UTF-8");
			outputStream = response.getOutputStream();
			inputStream = new FileInputStream(picFile);
			byte[] buffer = new byte[1024];
			int i = -1;
			while ((i = inputStream.read(buffer)) != -1) {
				outputStream.write(buffer, 0, i);
			}
			outputStream.flush();
			outputStream.close();
			inputStream.close();
			outputStream = null;
			
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (outputStream != null) {
				try {
					outputStream.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (inputStream != null) {
				try {
					inputStream.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (null != inputStreamTmp) {
				try {
					inputStreamTmp.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
    }