idea使用maven创建java web项目
maven安装
顺序不太对，按自己的思路顺序搭建
1. 下载maven
2. 配置环境变量
3.配置本地仓库
在maven的安装目录中conf/settings.xml文件配置本地仓库
配置IntelliJ
在IntelliJ的设置中，可以设置maven的安装目录，settings.xml文件的位置，和本地仓库的位置等信息。
新建项目
创建父工程
file-maven-跳过原型选择-创建
子工程：
ctrl+shift+alt+s：添加子模块
原型选择：web层用war(web app),service层和dao层用jar（quickstart）
maven模板项目结构
每个module都需要创建五个目录
配置Tomcat容器
打开菜单Run -> 选择Edit Configuration
点击“+”号 -> 选择“Tomcat Server” -> 选择“Local”
在Tomcat中部署并运行项目
Run -> Edit Configurations，进入”Run/Debug Configurations”窗口 -> 选择刚刚建立的Tomcat容器 -> 选择Deployment -> 点击右边的“+”号 -> 选择Artifact
打开Project Structure（快捷键：Ctrl+Shift+Alt+s）
dao层的web.xml设置
默认的版本是2.3，更改为2.5
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring/applicationContext.xml,classpath:spring/applicationContext-*.xmlparam-value>
context-param>
<filter>
<filter-name>OpenSessionInViewfilter-name>
<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilterfilter-class>
filter>
<filter-mapping>
<filter-name>OpenSessionInViewfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<filter>
<filter-name>struts2filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilterfilter-class>
filter>
<filter-mapping>
<filter-name>struts2filter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<welcome-file-list>
<welcome-file>index.htmlwelcome-file>
<welcome-file>index.htmwelcome-file>
<welcome-file>index.jspwelcome-file>
<welcome-file>default.htmlwelcome-file>
<welcome-file>default.htmwelcome-file>
<welcome-file>default.jspwelcome-file>
welcome-file-list>
web-app>
问题
Description Resource Path Location Type
Cannot change version of project facet Dynamic Web Module to 2.5. maven-ssh0120 line 1 Maven Java EE Configuration Problem
找到工程目录：
修改：
pom.xml设置
基本配置：
每个maven都有一个pom.xml，pom.xml在工程根目录。
gropuid：项目名称
artifactid：模块名称(子项目名称)
version：版本
packaging：打包方式，jar(java工程)、war(web工程)、pom(作为父工程)
dependencies：依赖管理，配置本工程所依赖jar包（构件）
build：工程构建配置，配置插件
设置编译版本
或者让这三个地方一致
Project Structure里确认两个地方:Project sdk以及project language level
Project Structure->Modules里Sources里的Language level
Preferences->Java Compiler->Per-module bytecode Version
定义父工程的dom.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>4.0.0modelVersion>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-sshartifactId>
<packaging>warpackaging>
<version>0.0.1-SNAPSHOTversion>
<name>maven-ssh Maven Webappname>
<url>http://maven.apache.orgurl>
<properties>
<spring.version>4.2.4.RELEASEspring.version>
<hibernate.version>5.0.7.Finalhibernate.version>
<struts.version>2.3.24struts.version>
properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-ormartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.hibernategroupId>
<artifactId>hibernate-coreartifactId>
<version>${hibernate.version}version>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-coreartifactId>
<version>${struts.version}version>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-spring-pluginartifactId>
<version>${struts.version}version>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-json-pluginartifactId>
<version>${struts.version}version>
dependency>
dependencies>
dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-ormartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
dependency>
<dependency>
<groupId>org.hibernategroupId>
<artifactId>hibernate-coreartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.6version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>c3p0groupId>
<artifactId>c3p0artifactId>
<version>0.9.1.2version>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-coreartifactId>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-spring-pluginartifactId>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-json-pluginartifactId>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>servlet-apiartifactId>
<version>2.5version>
<scope>providedscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jsp-apiartifactId>
<version>2.0version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>1.7.2version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.9version>
<scope>testscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
dependencies>
<build>
<finalName>maven-sshfinalName>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<configuration>
<source>1.7source>
<target>1.7target>
<encoding>UTF-8encoding>
configuration>
plugin>
plugins>
build>
<properties>
<argLine>-Dfile.encoding=UTF-8argLine>
properties>
project>定义dao的dom.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>4.0.0modelVersion>
<parent>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-parentartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>maven-daoartifactId>
<packaging>jarpackaging>
<dependencies>
<dependency>
<groupId>org.hibernategroupId>
<artifactId>hibernate-coreartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-ormartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.6version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>c3p0groupId>
<artifactId>c3p0artifactId>
<version>0.9.1.2version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>1.7.2version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.9version>
<scope>testscope>
dependency>
dependencies>
project>定义service的dom.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>4.0.0modelVersion>
<parent>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-parentartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>maven-serviceartifactId>
<packaging>jarpackaging>
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.9version>
<scope>testscope>
dependency>
<dependency>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-daoartifactId>
<version>0.0.1-SNAPSHOTversion>
dependency>
dependencies>
project>定义web的dom.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>4.0.0modelVersion>
<parent>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-parentartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>maven-webartifactId>
<packaging>warpackaging>
<name>web工程name>
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.9version>
<scope>testscope>
dependency>
<dependency>
<groupId>cn.itcast.mavengroupId>
<artifactId>maven-serviceartifactId>
<version>0.0.1-SNAPSHOTversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-coreartifactId>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-spring-pluginartifactId>
dependency>
<dependency>
<groupId>org.apache.strutsgroupId>
<artifactId>struts2-json-pluginartifactId>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>servlet-apiartifactId>
<version>2.5version>
<scope>providedscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jsp-apiartifactId>
<version>2.0version>
<scope>providedscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
dependencies>
project>参考：
【java】intellij idea 超详细图解从0搭建SSM框架
Intellij Idea 创建Web项目并部署servlet
使用IntelliJ IDEA 配置Maven（入门）