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
publicclassUserInfoDaoImplimplementsUserInfoDao{
@Resource
privateHibernateTemplatehibernateTemplate;

}


@Component("userDao")
publicclassUserDaoImplimplementsUserDao{
privateHibernateTemplatehibernateTemplate;
@Resource
publicvoidsetHibernateTemplate(HibernateTemplatehibernateTemplate){
this.hibernateTemplate=hibernateTemplate;
}
}
---------------------------------------------------------------------------Service----------------------------------------------

 @Service
publicclassUserServiceImplimplementsUserInfoService{

@Resource
privateUserInfoDaouserInfoDao;
publicbooleangetUserExist(UserInfou)throwsException{
returnuserInfoDao.getUserExist(u);
}

publicvoidaddUser(UserInfou)throwsException{
this.userInfoDao.addUser(u);
}
}
---------------------------------------------------------------------------View----------------------------------------------
//方法一
@Controller
@RequestMapping("/user")
publicclassUserController{
@Autowired
privateUserServiceuserService;

@RequestMapping(value="/login")
publicStringtest(HttpServletRequestrequest,
HttpServletResponseresponse,Useruser){
Stringname=user.getName();
Stringpassword=user.getPassword();
Useruserinfo=userService.login(name,password);
if(userinfo!=null){
request.setAttribute("user",userinfo);
return"success";
}else{
return"error";
}
}
}

@Resource
privateTreeServicets;
@Override
publicStringexecute()throwsException{
/**
*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.
*/
//TreeServicets=newTreeServiceImpl();
}

方法二:

publicclassInventoryControllerimplementsController{
protectedfinalLoglogger=LogFactory.getLog(getClass());
privateProductManagerproductManager;
publicModelAndViewhandleRequest(HttpServletRequestrequest,HttpServletResponseresponse)
throwsServletException,IOException{
Stringnow=(newjava.util.Date()).toString();
logger.info("returninghelloviewwith"+now);
Map<String,Object>myModel=newHashMap<String,Object>();
myModel.put("now",now);
myModel.put("products",this.productManager.getProducts());
returnnewModelAndView("hello","model",myModel);
}
//提供一个set
publicvoidsetProductManager(ProductManagerproductManager){
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-scanbase-package="com.org">
<context:include-filtertype="annotation"
expression="org.springframework.stereotype.Controller"/>
<context:include-filtertype="annotation"
expression="org.springframework.stereotype.Service"/>
<context:include-filtertype="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-->
<beanid="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<propertyname="viewClass"
value="org.springframework.web.servlet.view.JstlView"/>
<propertyname="prefix"value="/WebRoot/jsp/"/>
<propertyname="suffix"value=".jsp"/>
</bean>

web.xml配置

<!--##################支持SpringMVCDispatcherServlet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：SpringMVC