UserAction中通过@Autowired注入UserServiceImpl无效，得到对象为空
UserAction.java

@Namespace("/")
@ParentPackage("struts-default")
@Controller
public class UserAction extends ActionSupport implements ModelDriven {
    private User user = new User();

    public User getModel() {
        return this.user;
    }

    // *****************************
    @Autowired
    private UserService userService;

    @Action(value = "userAction_add", results = { @Result(name = "add", location = "/success.jsp") })
    public String add() {
        this.userService.saveUser(user);
        return "add";
    }
}

UserServiceImpl.java

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;

    @Transactional
    public void saveUser(User user) {
        this.userDao.save(user);
    }

    @Transactional
    public void updateUser(User user) {
        this.userDao.update(user);
    }

    @Transactional
    public void deleteUser(User user) {
        this.userDao.delete(user);
    }

    @Transactional(readOnly = true)
    public User findUserById(Integer id) {
        return this.userDao.findById(id);
    }

    @Transactional(readOnly = true)
    public List findAllUser() {
        return this.userDao.findAll();
    }
}

配置文件

    
    
    
    
    
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
            
                
                    org.hibernate.dialect.MySQL5Dialect
                 
                true
                true
                update
                none
                thread
                
            
        
        
        
        
            
                com.entity