核心類

canSpringmvc

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name></display-name>	
  <!-- 架構一個Spring,需要配置一個監聽器，配置檔案位置及名稱若想自己取，則需配置ContextConfigLocation引數 -->
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>
  		classpath:beans.xml
  	</param-value>
  </context-param>
  <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <!-- 架SpringMVC還需再配一個DispatcherServlet -->
  <servlet>
  	<servlet-name>hncu</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<!-- 讀取類似struts框架的配置檔案struts.xml，該配置檔案在springmvc的預設命名規則為：servlet的名字+" -servlet.xml " 
  		如想自己制定springmvc的配置檔案，則應進行以下配置：
  	-->
  	<init-param>
  		<param-name>namespace</param-name>
  		<param-value>hncu-servlet</param-value>
  	</init-param>
  	
  	<!-- 專案一啟動就載入SpringMVC的分發器 -->
  	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>hncu</servlet-name>
  	<url-pattern>/sp/*</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>
 

<?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"
		xmlns:tx="http://www.springframework.org/schema/tx"
		xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
				http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
				http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
	<!-- controller 的bean 可以用id或name標識，但id不能用"/"，而name可以("/hello"標明訪問路徑) -->
	<bean name="/hello" class="cn.hncu.one.HelloWorldController"></bean>
	<!-- 為了把前段的url請求轉換成訪問對應的bean,要配如下這個類() spring4以後則可省略-->
	<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
	
	<!-- 以轉發形式顯示的view必須配置下面這個的類以進行解析 -->
	<bean class="org.springframework.web.servlet.view.ResourceBundleViewResolver">
		<property name="basenames">
			<list>
				<value>hncu</value><!-- 資源配置檔案在classpath下：hncu.properties -->
			</list>
		</property>
		<property name="defaultParentView" value="hncu"></property><!-- 配置預設父View -->
	</bean>
	
	<!-- 配置方法動態呼叫核心類 -->
	<bean id="MethodResolver" class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
		<!-- 預設執行的方法名 -->
		<property name="defaultMethodName" value="execute"></property>
		<property name="paramName" value="method"></property>
	</bean>
	<!-- 第2個Controller,演示多方法動態呼叫核心類 -->
	<bean name="/muliti" class="cn.hncu.one.MulitiMethodController">
		<property name="methodNameResolver" ref="MethodResolver"></property>
	</bean>
	
</beans>

package cn.hncu.one;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.view.RedirectView;

//springmvc中的控制器要實現Controller介面，類似struts的action要實現Action介面一樣
public class HelloWorldController implements Controller{
/*	版本1
	@Override
	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		System.out.println("Hello  Contorller......");
		return null;//沒有導向結果頁面
	}
*/
/*	版本2導向一個重定向的結果頁面
	@Override
	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		System.out.println("Hello  Contorller......RedirectView");
		
		//讓控制器返回一個 重定向view
		View view=new RedirectView("/jsps/hello.jsp",true);//引數true表示訪問時帶專案名
		ModelAndView mv=new ModelAndView();//空參
		mv.setView(view);
		return mv;
	}
*/
	//版本3 導向一個轉發的結果頁面-----需要在配置檔案中載入ResourceBundleViewResolver類
	@Override
	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		System.out.println("Hello  Contorller.....轉發 ");
		//讓我們的控制器返回一個 轉發View
		ModelAndView mv=new ModelAndView("send","name","我的大城院");//導向 send 所對應的資源檢視，並且封裝引數：name="我的大城院"
		return mv;
	}
}

hncu.(class)=org.springframework.web.servlet.view.JstlView
hncu.url=/jsps/hello.jsp
send.url=/jsps/one.jsp
one.url=/jsps/one.jsp
two.url=/jsps/two.jsp
three.url=/jsps/three.jsp
four.url=/jsps/four.jsp

package cn.hncu.one;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

import cn.hncu.domain.User;

public class MulitiMethodController extends MultiActionController{
	//反模式：這種不帶req和resp兩個引數的方法不能被訪問(要求至少要兩個引數,多個也可以)
	public void one(){
		System.out.println("該方法訪問不到.......");
	}
	public String execute(HttpServletRequest req,HttpServletResponse resp){
		System.out.println("這是一個預設方法，可以被訪問到。。。。");
		return "one";
	}
	public String two(HttpServletRequest req,HttpServletResponse resp){
		System.out.println("two這個方法，可以被訪問到。。。。");
		return "two";
	}
	public ModelAndView three(HttpServletRequest req,HttpServletResponse resp){
		System.out.println("three這個方法，可以被訪問到。。。。");
		String name =req.getParameter("name");
		return new ModelAndView("three", "name", name);
	}
	//學習如何封裝複雜資料
	public ModelAndView four(HttpServletRequest req,HttpServletResponse resp,User user){
		System.out.println("four這個方法，可以被訪問到。。。。");
		ModelAndView mv=new ModelAndView();
		mv.setViewName("four");
		mv.addObject(user);
		return mv;
	}
}

package cn.hncu.domain;

public class User {
	private String name;
	private Integer age;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "User [name=" + name + ", age=" + age + "]";
	}
	
}