初探SpringMVC框架：首日入门指南

1.     搭建环境

2.     如何完成Controller和Viewer的映射

3.     如何把值传递给Controller

4.     Controller如何把值传递给Viewer

5.     异常处理

6.     页面标签

7.     文件上传

8.     深入一下源代码

Spring MVC流程图&＃xff1a;

1.     环境搭建

web.xml


SpringMvc spring org.springframework.web.servlet.DispatcherServlet 1 spring /


spring-servlet.xml

WelcomeController

package controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class WelcomeController extends AbstractController
{&＃64;Overrideprotected ModelAndView handleRequestInternal(HttpServletRequest request ,HttpServletResponse response) throws Exception {System. out.println("welcome" );return new ModelAndView("welcome");}
}

HelloController

package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
&＃64;Controller
public class HelloController
{//RequestMapping表示用哪個url 來對應&＃64;RequestMapping({ "/hello","/" })public String hello(){System. out.println("hello" );return "hello" ;}&＃64;RequestMapping( "/welcome")public String welcome(){return "welcome" ;}
}

源码&＃xff1a;http://pan.baidu.com/s/1eQtgvfW

2.     如何完成Controller和Viewer的映射

注意:

package controller;
import org.springframework.stereotype.Controller ;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
&＃64;Controller
public class HelloController
{//RequestMapping表示用哪個url 來對應// &＃64;RequestParam ("userName" )如果你不传userName值过来的话会报错,可以省略&＃xff0c;不传值为null&＃64;RequestMapping({ "/hello","/" })public String hello( &＃64;RequestParam("userName" ) String userName){System. out.println("hello" );System. out.println(userName );return "hello" ;}&＃64;RequestMapping( "/welcome")public String welcome(){return "welcome" ;}
}

HelloController

package controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
&＃64;Controller
public class HelloController
{  //RequestMapping表示用哪個url 來對應&＃64;RequestMapping({ "/hello" ,"/" })public String hello(String userName ,Model model ){System. out .println("hello" );model .addAttribute("userName" , userName );//此时用哪个作变key?它是默认使用的对象的类型作为 key -->model.addAttribute("string", userName);//model.addAttribute(new user());   -->model.addAttribute("user", new user());model .addAttribute(userName );System. out .println(userName );return "hello" ;}&＃64;RequestMapping( "/welcome" )public String welcome(){return "welcome" ;}
}

hello.jsp

<%&＃64; page language&＃61; "java" contentType &＃61; "text/html; charset&＃61;utf-8"pageEncoding &＃61;"utf-8" %>

< html>
< head>
< meta http-equiv &＃61;"Content-Type" content&＃61; "text/html; charset&＃61;utf-8">
< title> Insert title here 

< body> Hello&＃xff01;${userName }${string }



spring-servlet.xml


< beans xmlns &＃61;"http://www.springframework.org/schema/beans"xmlns:xsi &＃61;"http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc &＃61;"http://www.springframework.org/schema/mvc"xmlns:context &＃61;"http://www.springframework.org/schema/context"xsi:schemaLocation &＃61;"http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc.xsd">


源码&＃xff1a; http://pan.baidu.com/s/1o6A0YpG