问一下spring的问题

Question

 这是spring的配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"

 xsi:schemaLocation="http://www.springframework.org/schema/beans
                     http://www.springframework.org/schema/beans/spring-beans.xsd
                     http://www.springframework.org/schema/context
                     http://www.springframework.org/schema/context/spring-context.xsd
                     http://www.springframework.org/schema/tx
                     http://www.springframework.org/schema/tx/spring-tx.xsd
                     http://www.springframework.org/schema/aop
                     http://www.springframework.org/schema/aop/spring-aop.xsd">

 <!-- 给FACTORY 提供数据源的配置 -->
 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
  <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
  <property name="url" value="jdbc:mysql://localhost:3306/newsystem"></property>
  <property name="username" value="root"></property>
  <property name="password" value="123456"></property>
  
 </bean>
 
 <!-- 将MYBATIS的SqlSessionFactory 交给SPRING IOC容器管理，factory的生命周期受容器的控制 -->
 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
  <property name="dataSource" ref="dataSource"></property>
  <!-- <property name="configLocation" value="classpath:MyBatis-Configuration.xml"></property>-->
  
 </bean>
 <!-- 配置dao -->
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
  <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
  <property name="basePackage" value="com.news.mapper"></property>
 </bean>
 
 <!-- Service -->
 <bean id="commentsService" class="service.CommentsService"/>
 <bean id="newsService" class="service.NewsService"/>
 <bean id="newsUsersService" class="service.NewsUsersService"/>
 <bean id="topicService" class="service.TopicService"/>
 
 <!-- 该 BeanPostProcessor 将自动起作用，对标注 @Autowired 的 Bean 进行自动注入 -->
    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
 
</beans>

我是用注解方式是用spring创建对象

这里的两个对象topicService和newsService调试出都是空的，这是为什么？

package jsp;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;

import com.news.pojo.News;
import com.news.pojo.Topic;

import service.NewsService;
import service.TopicService;
import yewu.Execute;

public class indexJsp implements Execute{
 @Autowired
 private TopicService topicService;
 @Autowired
 private NewsService newsService;
 
 
 public void setTopicService(TopicService topicService) {
  this.topicService = topicService;
 }
 
 public void setNewsService(NewsService newsService) {
  this.newsService = newsService;
 }

 @Override
 public void execute(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  request.setCharacterEncoding("UTF-8");
  HttpSession session=request.getSession();
  if(request.getParameter("login")==null){  
  }else if(request.getParameter("login").equals("0")){
   session.removeAttribute("name");
  }
  List<News> list5;
  List<News> list6;
  
  int limit1;
  if(request.getParameter("page")!=null){
   limit1=Integer.parseInt(request.getParameter("page"));
  }else{
   limit1=0;
  }
  int limit2=10;
  if(request.getParameter("ntid")!=null){
   list5=newsService.jingqueNews(Integer.parseInt(request.getParameter("ntid")),limit1,limit2);
   list6=newsService.jingqueNews(Integer.parseInt(request.getParameter("ntid")));
  }else{
   list5=newsService.jingqueNews(1,limit1,limit2);
   list6=newsService.jingqueNews(1);
  }
  int limitMax=list6.size();
  List<News> list1=newsService.guoleiNews();
  List<News> list3=newsService.yuleNews();
  List<News> list2=newsService.guojiNews();
  List<Topic> list=topicService.chaxun(); 
  request.setAttribute("list1", list1);
  request.setAttribute("list2", list2);
  request.setAttribute("list3", list3);
  request.setAttribute("list", list);
  request.setAttribute("list5", list5);
  request.setAttribute("limit1", limit1);
  request.setAttribute("limitMax", limitMax);
  request.getRequestDispatcher("index.jsp").forward(request, response); 
 } 
}

spring的框架日志显示是启动成功的

九月 20, 2017 6:15:05 下午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Answer 1

看下这个对象  indexJsp  是否交由Spring管理