Spring MVC的例子使用

 

  /**
 * @Component,@Service,@Controller,@Repository注解的类
 * 
 * @Service(逻辑层使用)rt.jar @Repository(Dao层使用) 
 * 
 * @Controller(View使用也就是action中的类) spring.jar夹包下
 * 
 *  @Autowired自动装配
 * @Component可以单独使用..spring.jar(Dao,Service层都使用.)
 * 
 * @Resource(用于注入使用.提供对象..的一个setXXX)在 javaee.jar夹包下
 * 
 */

--------------------------------------------------------------------------- Dao----------------------------------------------  
  @ Repository
 public class UserInfoDaoImpl implements UserInfoDao {
      @Resource
      private HibernateTemplate hibernateTemplate;

 }


@ Component ("userDao")
public class UserDaoImpl implements UserDao {
     private HibernateTemplate hibernateTemplate;
    @Resource
     public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
     this.hibernateTemplate = hibernateTemplate;
}
}
---------------------------------------------------------------------------Service  ----------------------------------------------   

 @Service 
public class UserServiceImpl implements UserInfoService {

@Resource
private UserInfoDao userInfoDao;
public boolean getUserExist(UserInfo u) throws Exception {
     return userInfoDao.getUserExist(u);
}

public void addUser(UserInfo u) throws Exception {
     this.userInfoDao.addUser(u);
}
}
---------------------------------------------------------------------------View---------------------------------------------- 
//方法一
@Controller
@RequestMapping("/user")
public class UserController {
 @Autowired
private UserService userService;

 @RequestMapping(value="/login")
 public String test(HttpServletRequest request,   
            HttpServletResponse response,User user){
String name = user.getName();
String password = user.getPassword();
User userinfo = userService.login(name, password);
if(userinfo!=null) {
request.setAttribute("user", userinfo); 
return "success";
}else {
return "error";
}
}
}

@Resource
private TreeService ts ;
@Override
public String execute() throws Exception {
/**
 * 切记不能用这样处理.在spring的mvc的注解不是这样去调用方法的.
 */
//TreeService ts = new TreeServiceImpl();
  }

方法二:

public class InventoryController implements Controller {
protected final Log logger = LogFactory.getLog(getClass());
      private ProductManager productManager;
      public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException {
        String now = (new java.util.Date()).toString();
        logger.info("returning hello view with " + now);
        Map<String, Object> myModel = new HashMap<String, Object>();
        myModel.put("now", now);
        myModel.put("products", this.productManager.getProducts());
        return new ModelAndView("hello", "model", myModel);
   }
    //提供一个set
    public void setProductManager(ProductManager productManager) {
           this.productManager = productManager;
 }
}

 

-------------------------------------------------------------------------Config------------------------------------------------ 

 

 spring配置注意事项

     

  <!--启用注解   定义组件查找规则 -->  


    <context:component-scan base-package="com.org">  
        <context:include-filter type="annotation"  
            expression="org.springframework.stereotype.Controller" />  
        <context:include-filter type="annotation"  
            expression="org.springframework.stereotype.Service" />  
        <context:include-filter type="annotation"  
            expression="org.springframework.stereotype.Repository" />  
    </context:component-scan>  

<!-- 对spring的View的Contrller的进行配置  视图查找器 -->
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WebRoot/jsp/" />
<property name="suffix" value=".jsp" />
</bean>

 

web.xml配置

 

<!-- ##################支持Spring MVC DispatcherServlet配置################################# -->
<servlet>
<!-- application与xml的前缀有关命名Eg:xx-context.xml. -->
<servlet-name>application</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>application</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

 

项目如下代码：

 

所需要的jarlib

 

 

 源代码：最新SpringMVC