maven+Spring简单web项目demo

1.右键新建项目（没有maven项目时，点击other）,如下图所示，选择Maven Progect



2.设置项目存储位置



3.选择maven-archetype-webapp



4、输入项目组id和本项目id，点击finish完成



5、项目完成后，右键项目属性properties，选择deploymentAssembly，将不需要发布的目录remove移除掉



6、最终项目目录如下所示



7、修改maven的pom.xml文件，增加jar包的依赖描述，maven会自动下载相关jar包及其依赖包

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>exam</groupId>
<artifactId>exam_2</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>Maven Webapp Archetype</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.0.7.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.0.7.RELEASE</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>

</dependencies>
<build>
<finalName>exam_2</finalName>
</build>
</project>

8、修改web.xml，配置spring和servlet

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> 
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:conf/applicationContext.xml</param-value>
</context-param>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
<servlet-name>exam</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>exam</param-name>
<!-- 默认路径在WebConte下面，默认名称就是spring-servlet.xml，我们这里就不使用默认值 -->
<param-value>classpath:conf/exam-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>exam</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

</web-app>

9、资源文件applicationContext.xml，因为我们只是简单的使用spring，暂时没有配其他的，但也要有该文件，内容可以不填，基本的如下

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
</beans>

10、exam-servlet.xml配置对servlet的处理，文件内容如下

<?xml version="1.0" encoding="UTF-8"?>
<!-- Bean头部 -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
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/context http://www.springframework.org/schema/context/spring-context-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/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> 
<!-- 激活@Controller模式 -->
<mvc:annotation-driven />
<!-- 对包中的所有类进行扫描，以完成Bean创建和自动依赖注入的功能 需要更改 -->
<context:component-scan base-package="com.xiaoma.action" />

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix"><!-- 视图文件的前缀 -->
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix"><!-- 视图文件的后缀 -->
<value>.jsp</value>
</property>
</bean>
</beans>

11、现在我们可以新建一个action来测试一下，我们的spring是否可以正常使用，根据之前的前缀及后缀配置，我们在WEB-INF下新建jsp/demo目录，在demo目录下新建 demo.jsp页面

新建包com.xiaoma.action,在该包下新建TestAction.java类，

package com.xiaoma.action;

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

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestAction {

@RequestMapping("/test.do")
public ModelAndView test(HttpServletRequest request,HttpServletResponse response){
System.out.println("1234");
return  new ModelAndView("/demo/demo","message","abc");
}

}

访问test.do 时，即可返回demo.jsp页面，并将message对象带过去