1.打开eclipse，文件-新建-其他，选择Maven Project
2.第一个打上勾，并输入存储目录
3.下一步，这里的Packing 选择 war的形式
4.由于packing是war包，那么下面也就多出了webapp的目录
5.由于我们的项目要使用eclipse发布到tomcat下面，这里我们需要先把项目转成dynamic web project
在我们的项目上点击右键，选择properties 并找到 Project Facets ，并点击Convert to faceted form… 然后勾选Dynamic Web Module 并点击ok 如下图：(3.0只有tomcat7才支持)
6.自己在webapp文件夹下新建两个目录 META-INF ，WEB-INF
7.然后我们要修改发布规则，右键点击项目， 选择 Deployment Assembly
应该是这个样子
8.至此一个基于maven的webapp就建立好了，并可以直接从eclipse中发布到tomcat中
补充：我们需要在src/main/webapp/WEB-INF下面创建一个web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>test</display-name>
<!-- 加载spring的xml配置文件到 spring的上下文容器中 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/applicationContext.xml</param-value>
</context-param>
<!--将session绑定至当前(current)请求的线程上并通过事务管理器自动检测-->
<filter>
<filter-name>SpringOpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SpringOpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 编码过滤器 -->
<filter>
<filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置Spring监听 -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 配置SpringMVC -->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
在src/main/java/下新建config目录
新建applicationContext.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" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:jms="http://www.springframework.org/schema/jms"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-jms-4.2.xsd">
<!-- 当前Spring支持注解 -->
<context:annotation-config />
<!-- 设置当前项目的根包 -->
<context:component-scan base-package="com.nit.test" />
<!-- spring获取c3p0数据库连接池配置 -->
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>classpath:config/config.properties</value>
</property>
</bean>
<!-- 配置c3p0数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driverClassName}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialPoolSize" value="${connection.initialPoolSize}" />
<property name="minPoolSize" value="${connection.minPoolSize}" />
<property name="maxPoolSize" value="${connection.maxPoolSize}" />
<property name="acquireIncrement" value="${connection.acquireIncrement}" />
<property name="acquireRetryAttempts" value="${connection.acquireRetryAttempts}" />
<property name="acquireRetryDelay" value="${connection.acquireRetryDelay}" />
<property name="maxIdleTime" value="${connection.maxIdleTime}" />
<property name="idleConnectionTestPeriod" value="${connection.idleConnectionTestPeriod}" />
<property name="maxStatements" value="${connection.maxStatements}" />
<property name="maxStatementsPerConnection" value="${connection.maxStatementsPerConnection}" />
<property name="preferredTestQuery" value="select 1" />
<property name="breakAfterAcquireFailure" value="true" />
<property name="testConnectionOnCheckout" value="false" />
</bean>
<!-- 配置Hibernate的session工厂 -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.format_sql">false</prop>
</props>
</property>
<!-- 注解扫描的包 -->
<property name="packagesToScan">
<list>
<value>com.nit.test.model</value>
</list>
</property>
</bean>
<!-- 配置事务管理 -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--启动spring事务注解功能 -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
在src/main/java/下新建config目录
新建config.properties
###### C3P0 MySQL CONFIG ####### jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=1234 connection.initialPoolSize=1 connection.minPoolSize=1 connection.maxPoolSize=5 connection.acquireIncrement=2 connection.acquireRetryAttempts=10 connection.acquireRetryDelay=1000 connection.maxIdleTime=3600 connection.idleConnectionTestPeriod=1800 connection.maxStatements=0 connection.maxStatementsPerConnection=0
在src/main/java/下新建config目录
新建spring-mvc.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" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd"> <context:component-scan base-package="com.nit.test.controller" /> <!-- 开启mvc注解 --> <mvc:annotation-driven /> <!-- 允许对静态资源文件的访问 --> <mvc:default-servlet-handler /> </beans>
在pom.xml修改为（导入包）
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.nit</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.2.5.RELEASE</spring.version>
<hibernate.version>5.0.8.Final</hibernate.version>
<jackson.version>2.7.5</jackson.version>
<activemq.version>2.7.5</activemq.version>
<quartz.version>2.2.1</quartz.version>
<fastjson.version>1.1.41</fastjson.version>
</properties>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc-portlet</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
</dependencies>
</project>
至此，项目生成完成
