用一个类来存放applicationContext：
public class ContextHolder {
private final static ContextHolder instance =
new ContextHolder();
private ApplicationContext ac;
private ContextHolder() { }
public static ContextHolder getInstance() {
return instance; }
public synchronized void setApplicationContext(ApplicationContext ac) {
this.ac = ac; }
public ApplicationContext getApplicationContext() {
return ac; } }
然后写一个servlet，继承自org.springframework.web.context.ContextLoaderServlet，并配置web.xml，让它在tomcat启动时自动运行。然后在它的init方法中，加入如下的代码：
WebApplicationContext context = WebApplicationContextUtils. getWebApplicationContext(
this.getServletContext()); ContextHolder.getInstance().setApplicationContext(context);
