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体验Spring3 MVC,调换Struts2
添加时间:2013-7-15 点击量:体验Spring3 MVC,调换Struts2
我俩之间有着强烈的吸引力。短短几个小时后,我俩已经明白:我们的心是一个整体的两半,我俩的心灵是孪生兄妹,是知己。她让我感到更有活力,更完美,更幸福。即使她不在我身边,我依然还是感到幸福,因为她总是以这样或者那样的方式出现在我心头。——恩里克·巴里奥斯《爱的文明》
2013-01-26 10:32:20 我来说两句
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Java的WEB框架中,Struts2应当是最有名的,不过比来试了试Spring3 MVC,感触感染啊,几乎像ASP.Net MVC3一样舒畅,今后就用它了。简单记录一下过程,没有技巧含量。
1、筹办包
的是spring framework 3.2.0,从中抽取以下jar到的WEB-INF/lib下:
spring-beans-3.2.0.RELEASE.jar
spring-context-3.2.0.RELEASE.jar
spring-core-3.2.0.RELEASE.jar
spring-expression-3.2.0.RELEASE.jar
spring-web-3.2.0.RELEASE.jar
spring-webmvc-3.2.0.RELEASE.jar
别的还须要几个第三方jar包,记录日记和处理惩罚json:
commons-logging-1.1.1.jar
jackson-core-als-1.9.11.jar
jackson-mapper-asl-1.9.11.jar
2、WEB-INF/web.xml
<?xml version=1.0 encoding=UTF-8?>
<web-app xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
xmlns=http://java.sun.com/xml/ns/javaee
xmlns:web=http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
xsi:schemaLocation=http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
id=WebApp_ID version=2.5>
<!--站点名-->
<display-name>mvc</display-name>
<!--指定spring设备文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<!--servlet名字,随便-->
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<!--servlet名字-->
<servlet-name>spring</servlet-name>
<!--阻碍所有恳求,对静态文件会有题目,在spring-servlet.xml中解决-->
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
3、WEB-INF/spring-servlet.xml
<?xml version=1.0 encoding=UTF-8?>
<beans xmlns=http://www.springframework.org/schema/beans
xmlns:context=http://www.springframework.org/schema/context
xmlns:p=http://www.springframework.org/schema/p
xmlns:mvc=http://www.springframework.org/schema/mvc
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
xsi:schemaLocation=http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd>
<!-- 启动注解驱动的Spring MVC功能,注册恳求url和注解POJO类办法的映射-->
<mvc:annotation-driven />
<!-- 启动包扫描功能,以便注册带有@Controller、@Service、@repository、@Component等注解的类成为spring的bean -->
<context:component-scan base-package=com.test.mvc.web />
<!-- 对模型视图名称的解析,在WEB-INF/jsp目次下找对应的jsp文件 -->
<bean class=org.springframework.web.servlet.view.InternalResourceViewResolver p:prefix=/WEB-INF/jsp/ p:suffix=.jsp />
<!--放过/scripts下的静态文件-->
<mvc:resources mapping=/scripts/ location=/scripts/ />
</beans>
4、WEB-INF/applicationContext.xml
spring的设备文件,因为我们不应用它的其它功能,临时放个空的就好了。
<?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:util=http://www.springframework.org/schema/util
xsi:schemaLocation=http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd>
</beans>
5、写Controller
package com.test.mvc.web;
import org.springframework.stereotype.;
import org.springframework.web.bind.annotation.;
import org.springframework.web.servlet.;
/
把握器,用Controller注解
/
@Controller
public class HomeController {
/
映射到/welcome
/
@RequestMapping(value = /welcome)
public ModelAndView welcome(){
ModelAndView mv = new ModelAndView(welcome); //应用welcome.jsp,若是不写,按照url默认也是welcome.jsp
mv.addObject(hello, Hello); //model中增长一个名为hello的字符串
Client client = new Client();
client.setName(User);
mv.addObject(client, client); //再增长一个名为client的自定义对象
return mv;
}
/
若是不须要Model,直接返String更简单,对应的view为login_page.jsp
/
@RequestMapping(value = /login)
public String login(){
return login_page;
}
/
一个返回json的办法,用ResponseBody标识
可以在url中定义参数中,实现RESTful真是太简单了
传参很灵活,可以从url中取,也可以定义通俗的
/
@RequestMapping(value=/client/{name}, method = RequestMethod.GET)
@ResponseBody
public Client getClient(@PathVariable String name, String title){
Client client = new Client();
client.setName(title+ + name);
return client;
}
}
里面用到了Client,很简单的POJO:
package com.test.mvc.web;
/
自定义一个POJO
/
public class Client {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
6、写视图
按照spring-servlet.xml中的设备,视图要放到WEB-INF/jsp下,新建welcome.jsp:
<%@ page language=java contentType=text/html; charset=UTF-8 pageEncoding=UTF-8%>
<!DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/loose.dtd>
<html>
<head>
<meta http-equiv=Content-Type content=text/html; charset=UTF-8>
<title>Spring MVC</title>
<script src=scripts/jquery-1.4.2.js></script>
<script>
¥(function(){
¥(#btnGet).click(function(){
¥.ajax({
type: GET,
url : client/Tian, //经由过程url传递name参数
dataType : json,
data: {title: Mr}, //经由过程data传递title参数
success : function(data) {
alert(data.name);
},
error : function(data) {
alert(data.responseText);
}
});
});
});
</script>
</head>
<body>
<!-- 显示model中的hello字符串和client对象的name -->
¥{hello}
¥{client.name}
<br/>
<input id=btnGet type=button value=get client />
</body>
</html>
一切伏贴,把Tomcat跑起来吧,用浏览器接见 localhost:8080/mvc/welcome 就能看到页面了。