web启动@Autowired不能自动注入

使用struts2,下面为action代码
Java代码

package com.edar.web.platform;   
  
import org.apache.struts2.convention.annotation.InterceptorRef;   
import org.apache.struts2.convention.annotation.InterceptorRefs;   
import org.apache.struts2.convention.annotation.Namespace;   
import org.apache.struts2.convention.annotation.Result;   
import org.apache.struts2.convention.annotation.Results;   
import org.springframework.beans.factory.annotation.Autowired;   
import org.springframework.beans.factory.annotation.Qualifier;   
import org.springframework.stereotype.Component;   
  
import com.edar.components.AccountBean;   
import com.edar.dao.util.Page;   
import com.edar.model.Account;   
import com.edar.service.platform.AccountService;   
import com.edar.web.struts2.GenericAction;   
@Component  
@Namespace("/platform")   
@InterceptorRefs( { @InterceptorRef("paramsPrepareParamsStack") })   
@Results( { @Result(name = GenericAction.RELOAD, location = "account.action", type = "redirect") })   
public class AccountAction extends GenericAction<AccountBean> {   
    private static final long serialVersionUID = 1900042912756344244L;   
    @Autowired  
    @Qualifier("accountServiceImpl")   
    private AccountService accountService;   
    private AccountBean accountBean;   
    private Page<AccountBean> page = new Page<AccountBean>(16,true);   
    public AccountBean getAccountBean() {   
        return accountBean;   
    }   
  
    public void setAccountBean(final AccountBean accountBean) {   
        this.accountBean = accountBean;   
    }   
  
    public Page<AccountBean> getPage() {   
        return page;   
    }   
  
    public void setPage(final Page<AccountBean> page) {   
        this.page = page;   
    }   
    @Override  
    public String delete(){   
        accountService.delete((Account) dozer.map(accountBean, Account.class));   
        return SUCCESS;   
    }   
  
    @Override  
    public String list(){   
        page = accountService.getPage(accountBean);   
        return SUCCESS;   
    }   
  
    @Override  
    protected void prepareModel(){   
        if(accountBean==null){   
            accountBean = new AccountBean();   
        }else{   
            if(accountBean.getAccountId()!=null){   
                accountBean = (AccountBean)dozer.map(accountService.getAccount(accountBean.getAccountId()),   
                        AccountBean.class);   
            }   
        }   
           
    }   
  
    @Override  
    public String save(){   
        Account account = (Account) dozer.map(accountBean, Account.class);   
        accountService.save(account);   
        accountBean.setAccountId(account.getAccountId());   
        return SUCCESS;   
    }   
  
    public AccountBean getModel() {   
        return accountBean;   
    }   
  
}  

此action的junit测试代码

package com.edar.web.platform;   
  
import org.junit.After;   
import org.junit.AfterClass;   
import org.junit.Assert;   
import org.junit.Before;   
import org.junit.BeforeClass;   
import org.junit.Test;   
import org.springframework.beans.factory.annotation.Autowired;   
  
import com.edar.components.AccountBean;   
import com.edar.test.SpringContextTestCase;   
  
public class AccountActionTest extends SpringContextTestCase{   
       
  
    private static Long accountId;   
    @Autowired  
    private AccountAction accountAction;   
    @BeforeClass  
    public static void setUpBeforeClass() throws Exception {   
    }   
  
    @AfterClass  
    public static void tearDownAfterClass() throws Exception {   
    }   
  
    @Before  
    public void setUp() throws Exception {   
        AccountBean bean = new AccountBean();   
        bean.setName("ysheng53");   
        bean.setMobile("13819181747");   
        bean.setEmail("[email protected]");   
        bean.setPasswd("321");   
        accountAction.setAccountBean(bean);   
    }   
  
    @After  
    public void tearDown() throws Exception {   
    }   
    @Test  
    public void testSave() {   
        String result = accountAction.save();   
        accountId = accountAction.getAccountBean().getAccountId();   
        Assert.assertEquals(AccountAction.SUCCESS, result);   
    }   
    @Test  
    public void testList() {   
        String result = accountAction.list();   
        Assert.assertEquals(AccountAction.SUCCESS, result);   
        Assert.assertTrue(" 结果数小于0了 ",accountAction.getPage().getTotal()>0);   
    }   
  
    @Test(timeout=5000)   
    public void testDelete() {   
        accountAction.getAccountBean().setAccountId(accountId);   
        String result = accountAction.delete();   
        Assert.assertEquals(AccountAction.SUCCESS, result);   
        Assert.assertTrue("<=0",accountAction.getPage().getTotal()<=0);   
    }   
  
}  

注意到action中的代码:
Java代码

@Autowired
@Qualifier("accountServiceImpl")
private AccountService accountService;

现象时，在junit测试代码执行时，accountService能够被注入，但是用tomcat6，在eclipse，wtp中启动时，accountService没有被注入,为null！

问题在查，谁遇到过类似问题;
问题补充
经过测试分析发现:
AccountAction在junit测试时用spring注入进去，而且只有唯一一个;
而在struts2中，每次请求都会有一个AccountAction的实例；

现在的问题是，struts2中新建实例时，那个private AccountService accountService;自动注入无效;


注：使用了Conventian Plugin