java 前三讲 汇总 9幅图

web.xml

<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
  version="3.1">
  
  
  <servlet>
    <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-name>spring</servlet-name>
	<url-pattern>*.do</url-pattern>
  </servlet-mapping>

	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.do</url-pattern>
	</filter-mapping> 
  
  
  </web-app>

spring-servlet.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

  <!-- the application context definition for the springapp DispatcherServlet -->


  <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>        
  </bean>

	<bean id="urlMapping"
		class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/index.do">IndexAction</prop>
			</props>
		</property>
	</bean>

	<bean id="IndexAction" class="com.myweb.IndexAction">
		<property name="view">
			<value>index</value>
		</property>
	</bean> 
  
</beans>

IndexAction.java

package com.myweb;

import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;

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

public class IndexAction implements Controller {
	
	public String view;
	public String getView() {
		return view;
	}
	public void setView(String view) {
		this.view = view;
	}
	@Override
	public ModelAndView handleRequest(HttpServletRequest arg0,
			HttpServletResponse arg1) throws Exception {
		// TODO Auto-generated method stub
        ModelAndView mv=new ModelAndView(view);
		
		mv.addObject("hello", "你好");
		
		mv.addObject("myname", "shenyi");
		return mv;
	} 
}

index.jsp

<%
	String get_hello = request.getAttribute("hello").toString();
    
    response.getWriter().write(get_hello);
%>
${hello} my name is ${myname}

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