SpringMVC-HelloWorld (XML)

Spring2.5.6开启了Spring的注解时代，简化了的xml配置，提高了开发效率；但是，对于Spring的初学者，xml配置更容易理解的Spring的Ioc特性，aop特性；本文使用Maven构建工具，构建了基于XML配置的SpringMVC示例；

使用的技术

1. Spring 3.0.5.RELEASE
2. Maven 3
3. JDK 1.7
4. eclipse Kepler

Maven的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.gogo</groupId>
  <artifactId>springmvc-xml</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <spring>3.0.5.RELEASE</spring>
  </properties>

  <dependencies>
    <!-- springmvc配置 -->
	<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-context</artifactId>
		<version>${spring}</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-webmvc</artifactId>
		<version>${spring}</version>
	</dependency>

    <!-- spring-jdbc 配置-->
	<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-jdbc</artifactId>
		<version>${spring}</version>
	</dependency>

	<!-- JSTL -->
	<dependency>
		<groupId>javax.servlet</groupId>
		<artifactId>jstl</artifactId>
		<version>1.1.2</version>
	</dependency>

	<dependency>
		<groupId>taglibs</groupId>
		<artifactId>standard</artifactId>
		<version>1.1.2</version>
	</dependency>
  </dependencies>
</project>

Servlet的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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc-xml</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

  <!-- Servlet配置  -->
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/SpringMVC-servlet.xml</param-value>
            <!-- 默认是/WEB-INF/[servlet名字]-servlet.xml -->
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

    <!-- 编码处理过滤器 -->
	<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>/*</url-pattern>
	</filter-mapping>
</web-app>

SpringMVC-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:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- Scan the JavaConfig -->
	<!-- <context:component-scan base-package="com.cjt.springjdbc" /> -->
	<!-- controller配置 -->
	<bean name="/welcome.htm" class="com.cjt.springmvc_xml.controller.HelloController">
	  <property name="messageService">
	    <ref bean="messageService"></ref>
	  </property>
	</bean>

	<!-- service配置 -->
	<bean name="messageService" class="com.cjt.springmvc_xml.service.MessageService">
	  <!-- <property name="message" ref="message" /> -->
	</bean>

	<!-- <bean name="message" class="com.cjt.springmvc_xml.model.Message">
	  <property name="content" value="你好，世界！" />
	</bean> -->

	<!-- 视图解析配置 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix">
			<value>/WEB-INF/jsp/</value>
		</property>
		<property name="suffix">
			<value>.jsp</value>
		</property>
		<!-- <property name="order" value="0" /> -->
	</bean>

	<!-- 数据库配置 -->
	<!-- <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="${jdbc.driverClassName}" />
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>

	<context:property-placeholder location="classpath:jdbc.properties" /> -->

</beans>

Controller层

package com.cjt.springmvc_xml.controller;

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

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

import com.cjt.springmvc_xml.service.MessageService;

public class HelloController extends AbstractController{

	private MessageService messageService;

	public MessageService getMessageService() {
		return messageService;
	}

	public void setMessageService(MessageService messageService) {
		this.messageService = messageService;
	}

	@Override
	protected ModelAndView handleRequestInternal(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		// TODO Auto-generated method stub
		ModelAndView model = new ModelAndView("HelloPage");
		model.addObject("msg", messageService.getMessage().getContent());
		return model;
	}

}

Service层

package com.cjt.springmvc_xml.service;

import com.cjt.springmvc_xml.model.Message;

public class MessageService {
/*	private Message message;

	public Message getMessage() {
		return message;
	}

	public void setMessage(Message message) {
		this.message = message;
	}	*/

	public Message getMessage() {
		Message message = new Message();
		message.setContent("你好，世界！");
		return message;
	}

}

Mode层

package com.cjt.springmvc_xml.model;

public class Message {
	private String content;

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

}