Spring2.5 MVC annoation使用。Spring2.5比Spring2.0改善最大的亮点就在于annoation应用于MVC部分，大大减少了配置文件，刚刚完成一个小例子，用起来蛮舒服的。
运行环境 :JDK1.5 TOMCAT5.5
先来看看配置文件
1.applicationContext.xml
<?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:context=”http://www.springframework.org/schema/context” xsi:schemaLocation=”http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd“> <annotation-config /><!–annoation的配置,不写包名默认搜索全部–> </beans>
2.web.xml ,这个文件看起来似乎没有多大的变化，不过要注意模板～～
<?xml version=”1.0″ encoding=”UTF-8″?> <web-app version=”2.4″ xmlns=”http://java.sun.com/xml/ns/j2ee” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd“>
<display-name>springapp</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext*.xml</param-value> </context-param>
<!– Character Encoding filter –> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEnco dingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter>
<filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!–Spring ApplicationContext 载入 –> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
<servlet> <servlet-name>simple</servlet-name> <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class> </servlet>
<servlet-mapping> <servlet-name>simple</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
3.springapp-servlet.xml ,这个配置文件是不是看起来清爽了很多，不像2.0那么复杂了。
<?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:p=”http://www.springframework.org/schema/p” xmlns:context=”http://www.springframework.org/schema/context” xsi:schemaLocation=”http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd“>
<!– – The controllers are autodetected POJOs labeled with the @Controller annotation. –> <component-scan base-package=”test”/> <!–指定解析该包名下的controller–>
<bean p:prefix=”/WEB-INF/jsp/” p:suffix=”.jsp” /> </beans>
4.下边看看使用annoation风格的Controller: 这个相当于原来的simpleFormController
package test;
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@Controller @RequestMapping(“/person.do”) public class PersonForm { private static Person person = new Person();
@RequestMapping(method = RequestMethod.GET) public String setupForm(@RequestParam(“id”) long id, ModelMap model, HttpServletRequest request) { String s = request.getParameter(“id”); System.out.println(“getIdddddd ” + s); model.addAttribute(“person”, getPerson(id)); return “personForm”; }
@RequestMapping(method = RequestMethod.POST) public String processSubmit(@ModelAttribute(“person”) Person person, BindingResult result, SessionStatus status) { if (result.hasErrors()) { return “personForm”; } else { PersonForm.person = person; System.out.println(“person name set to:” + person.getName()); status.setComplete(); return “redirect:person.do?id=” + person.getId(); } }
private Person getPerson(long id) { return person; }
}
5.在来看个muliController的例子
package test;
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@Controller @RequestMapping(“/person.do”) public class PersonForm { private static Person person = new Person();
@RequestMapping(method = RequestMethod.GET) public String setupForm(@RequestParam(“id”) long id, ModelMap model, HttpServletRequest request) { String s = request.getParameter(“id”); System.out.println(“getId ” + s); model.addAttribute(“person”, getPerson(id)); return “personForm”;//直接返回view层名称 –>personForm.jsp }
@RequestMapping(method = RequestMethod.POST) public String processSubmit(@ModelAttribute(“person”) Person person, BindingResult result, SessionStatus status) { if (result.hasErrors()) { return “personForm”; } else { PersonForm.person = person; System.out.println(“person name set to:” + person.getName()); status.setComplete(); return “redirect:person.do?id=” + person.getId(); } }
private Person getPerson(long id) { return person; }
}
6.在看看view层:
personForm.jsp
test.jsp
7.所需要加载的jar包
spring.jar spring-agent.jar spring-aop.jar spring-aspects.jar spring-beans.jar spring-context.jar
spring-context-support.jar spring-core.jar spring-web.jar spring-webmvc.jar
8.如果页面使用了jstl，还需要使用两个额外的jar
jstl.jar standard.jar
http://ioio.javaeye.com/blog/344919