场景：

有时在servlet中需要使用Spring bean，如上传图片等

处理方法：

重写Servlet的init方法，通过WebApplicationContextUtils获得，代码如下：

public void init() throws ServletException {                  super.init();        ServletContext servletContext = this.getServletContext();          WebApplicationContext ctx =    WebApplicationContextUtils.getWebApplicationContext(servletContext);        bean = (TestBean)ctx.getBean("beanid");    }	protected void doPost(HttpServletRequest request, HttpServletResponse response)	   throws ServletException, IOException {	   ......	   bean.save(signpic);	   ......	}}