servlet 的action如果调spring注入Dao

想写一个简单的页面来测试接口,但我又不想麻烦的去配springmvc,就用了比较老的servlet

在web.xml是这样配置的

      <servlet>
        <description></description>
        <display-name>newDataQuery</display-name>
        <servlet-name>newDataQuery</servlet-name>
        <servlet-class>com.new.newDataQuery</servlet-class>
      </servlet>
      <servlet-mapping>
        <servlet-name>newDataQuery</servlet-name>
        <url-pattern>/newDataQuery</url-pattern>
      </servlet-mapping>

applicationContext-dao.xml下dao的配置

<bean id="newResultDao" class="com.new.impl.NewResultImpl">
        <property name="dataSource">
            <ref bean="dynamicJdbc" />
        </property>
</bean>

在action下可以这样访问dao

    private NewResultDao cr;
    
    public NewResultDao getCr() {
        return cr;
    }

    public void setCr(NewResultDao cr) {
        
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        ServletContext servletContext = this.getServletContext();  
        WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);  
        cr = (NewResultDao)ctx.getBean("newResultDao");
    }