Maven创建Web项目（idea）

web项目创建

Web项目开发需要导入许多的第三方jar包，用Maven创建web项目就可以将这一操作免去。

本项目是在idea下创建的，idea自带Maven，如果还未了解Maven的同学可以看上一篇Maven入门。

首先在idea下新建新的项目，并选择web-app模式

然后就是和创建普通java项目一样的步骤了（请查看Maven入门篇）

项目建好后，目录结构如下：（会发现目录很简单，没有java目录，也没有text目录）

所以我们需要自己创建其他目录，这里只创建java目即可。可以看到java文件夹和webapp，还有resources目录

都是有特定颜色和图标的，直接创建的目录是默认为普通目录，需要我们将改Maven项目jar包导入方式设为自动

导入（查看Maven入门篇）。值得注意的是，创建过程中，我是先设置的自动导包，然后创建的文件，导致这些

目录的颜色都没有变化，从新设置也没用用。这时可以使用手动设置（推荐从新创建项目）。

GAV坐标

新建的Maven项目都会有一个pom.xml的配置文件。

该文件用于管理：源代码、配置文件、开发者的信息和角色、问题追踪系统、组织信息、项目授权、项目的url、项目的依赖关系等等

最常用的操作就是配置Jar包的坐标，Maven则会根据该GAV坐标导入该坐标下的Jar包。

pom目录的主要组成

groupId

这是项目组的编号，这在组织或项目中通常是独一无二的。例如，一家银行集团com.company.bank拥有所有银行相关项目
artifactId

　　　项目名称

version

　　　项目的当前版本号

packaging

　　　项目的打包方式，最常见的是jar（接口调用）和war（项目部署）两种

scope

　　　用来控制依赖和编译，测试，运行classpath的关系。有一些属性可选

　　　　　compile：默认编译依赖范围。对编译，测试，运行三种都有效

　　　　　test：测试依赖范围。对测试的classpath有效

　　　　　provided：对于编译，测试的classpath都有效，但对于运行无效。例如servlet-api，Tomcat提供，Junit只需在测试的时候使用。

一些常用的GAV坐标

<!--junit-->

<dependency>

    <groupId>junit</groupId>

    <artifactId>junit</artifactId>

    <version>4.11</version>

    <scope>test</scope>

</dependency>

<!-- spring-->

<!--全部导入-->

<dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>4.0.2.RELEASE</version>

</dependency>

<!--指定导入-->

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-test</artifactId>

    <version>4.0.2.RELEASE</version>

    <scope>test</scope>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-core</artifactId>

    <version>4.0.2.RELEASE</version>

    <exclusions>

        <exclusion>

            <groupId>commons-logging</groupId>

            <artifactId>commons-logging</artifactId>

        </exclusion>

    </exclusions>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-context</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-beans</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-expression</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-aop</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-aspects</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-messaging</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-instrument</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-instrument-tomcat</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-oxm</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-jdbc</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-orm</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-tx</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-jms</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-web</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-webmvc</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-webmvc-portlet</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>org.springframework</groupId>

    <artifactId>spring-websocket</artifactId>

    <version>4.0.2.RELEASE</version>

</dependency>

<dependency>

    <groupId>aopalliance</groupId>

    <artifactId>aopalliance</artifactId>

    <version>1.0</version>

</dependency>

<dependency>

    <groupId>org.aspectj</groupId>

    <artifactId>aspectjweaver</artifactId>

    <version>1.7.4</version>

</dependency>  

<!-- JPA 2.0 -->

<dependency>

    <groupId>org.hibernate</groupId>

    <artifactId>hibernate-entitymanager</artifactId>

    <version>4.3.3.Final</version>

</dependency> 

<!--hibernate5.x -->

<dependency>

    <groupId>org.hibernate</groupId>

    <artifactId>hibernate-core</artifactId>

    <version>5.2.1.Final</version>

</dependency>

<!-- 添加Log4J依赖 -->

<dependency>

    <groupId>log4j</groupId>

    <artifactId>log4j</artifactId>

    <version>1.2.16</version>

</dependency>

<!--mybatis-->

<dependency>

    <groupId>org.mybatis</groupId>

    <artifactId>mybatis</artifactId>

    <version>3.2.5</version>

</dependency>

<dependency>

    <groupId>org.mybatis</groupId>

    <artifactId>mybatis-spring</artifactId>

    <version>1.2.2</version>

    <exclusions>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-asm</artifactId>

        </exclusion>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-tx</artifactId>

        </exclusion>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

        </exclusion>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aop</artifactId>

        </exclusion>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

        </exclusion>

        <exclusion>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

        </exclusion>

    </exclusions>

</dependency>

<!--dom4j-->

<dependency>

    <groupId>com.alibaba</groupId>

    <artifactId>druid</artifactId>

    <version>1.0.3</version>

</dependency> 

<!--c3p0-->

<dependency>

    <groupId>c3p0</groupId>

    <artifactId>c3p0</artifactId>

    <version>0.9.1.2</version>

</dependency> 

<!-- mysql数据库的驱动包 -->

<dependency>

    <groupId>mysql</groupId>

    <artifactId>mysql-connector-java</artifactId>

    <version>5.1.6</version>

</dependency>  

<!--web项目-->

<dependency>

    <groupId>javax.servlet</groupId>

    <artifactId>javax.servlet-api</artifactId>

    <version>3.0.1</version>

    <scope>provided</scope>

</dependency>

<dependency>

    <groupId>javax.servlet</groupId>

    <artifactId>jstl</artifactId>

    <version>1.2</version>

    <scope>provided</scope>

</dependency>

<dependency>

    <groupId>taglibs</groupId>

    <artifactId>standard</artifactId>

    <version>1.1.2</version>

    <scope>provided</scope>

</dependency>

<dependency>

    <groupId>javax.servlet.jsp</groupId>

    <artifactId>javax.servlet.jsp-api</artifactId>

    <version>2.3.1</version>

    <scope>provided</scope>

</dependency>  

<!--apache-commons-->

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-lang3</artifactId>

    <version>3.2.1</version>

</dependency>

<dependency>

    <groupId>commons-io</groupId>

    <artifactId>commons-io</artifactId>

    <version>2.4</version>

</dependency>

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-collections4</artifactId>

    <version>4.0</version>

</dependency>

<dependency>

    <groupId>commons-logging</groupId>

    <artifactId>commons-logging</artifactId>

    <version>1.1.3</version>

</dependency>

<dependency>

    <groupId>commons-codec</groupId>

    <artifactId>commons-codec</artifactId>

    <version>1.8</version>

</dependency>

<dependency>

    <groupId>commons-beanutils</groupId>

    <artifactId>commons-beanutils</artifactId>

    <version>1.8.3</version>

</dependency>

<dependency>

    <groupId>commons-chain</groupId>

    <artifactId>commons-chain</artifactId>

    <version>1.2</version>

</dependency>

<dependency>

    <groupId>commons-fileupload</groupId>

    <artifactId>commons-fileupload</artifactId>

    <version>1.3.1</version>

</dependency>

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-math3</artifactId>

    <version>3.2</version>

</dependency>

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-pool2</artifactId>

    <version>2.2</version>

</dependency>

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-digester3</artifactId>

    <version>3.2</version>

</dependency>

<dependency>

    <groupId>commons-net</groupId>

    <artifactId>commons-net</artifactId>

    <version>3.3</version>

</dependency>

<dependency>

    <groupId>commons-dbutils</groupId>

    <artifactId>commons-dbutils</artifactId>

    <version>1.5</version>

</dependency>

<dependency>

    <groupId>org.apache.commons</groupId>

    <artifactId>commons-email</artifactId>

    <version>1.3.2</version>

</dependency> 


<!--Struts-->

<dependency>

    <groupId>org.apache.struts</groupId>

    <artifactId>struts2-core</artifactId>

    <version>2.5.13</version>

</dependency>

<!-- Oracle Jdbc Driver -->

<dependency>

    <groupId>com.oracle</groupId>

    <artifactId>ojdbc14</artifactId>

    <version>10.2.0.4.0</version>

</dependency>

<!--Gson-->

<dependency>

    <groupId>com.google.code.gson</groupId>

    <artifactId>gson</artifactId>

    <version>2.8.2</version>

</dependency>