01淘淘商城项目：项目Maven工程搭建

Posted 2020-09-07

最近在学习淘淘商城项目的搭建，使用maven做管理

 

后台管理系统工程搭建：

使用maven的好处：

1.依赖管理、jar包、工程之间依赖

2.项目构建：实现项目的一步构建

3.工程聚合、继承、依赖

 

maven工程分为三种类型：

pom工程：用在父级工程，聚合工程中

war包工程：主要用作网站

jar包工程：就是当作jar使用的，可以用来打包

 

先给出总的项目结构，然后再解释是如何实现这些结构的

解释如下：

1.taotao-parent

taotao-parent公司级别的maven工程。主要功能是统一公司做各种项目时用的jar包的版本。

比如我们做淘淘商城，或者别的什么项目都要去继承这个项目。

首先安装本地仓库：

把该文件拷贝到自己机子的对应.m2目录下覆盖本地仓库的内容

下面开始创建maven工程

new-->选择maven project

然后修改pom.xml文件，如下：

配置所有jar包的版本信息

<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.taotao</groupId>      <artifactId>taotao-parent</artifactId>      <version>0.0.1-SNAPSHOT</version>      <packaging>pom</packaging>      <!-- 集中定义依赖版本号 -->      <properties>          <junit.version>4.12</junit.version>          <spring.version>4.1.3.RELEASE</spring.version>          <mybatis.version>3.2.8</mybatis.version>          <mybatis.spring.version>1.2.2</mybatis.spring.version>          <mybatis.paginator.version>1.2.15</mybatis.paginator.version>          <mysql.version>5.1.32</mysql.version>          <slf4j.version>1.6.4</slf4j.version>          <jackson.version>2.4.2</jackson.version>          <druid.version>1.0.9</druid.version>          <httpclient.version>4.3.5</httpclient.version>          <jstl.version>1.2</jstl.version>          <servlet-api.version>2.5</servlet-api.version>          <jsp-api.version>2.0</jsp-api.version>          <joda-time.version>2.5</joda-time.version>          <commons-lang3.version>3.3.2</commons-lang3.version>          <commons-io.version>1.3.2</commons-io.version>          <commons-net.version>3.3</commons-net.version>          <pagehelper.version>3.4.2-fix</pagehelper.version>          <jsqlparser.version>0.9.1</jsqlparser.version>          <commons-fileupload.version>1.3.1</commons-fileupload.version>          <jedis.version>2.7.2</jedis.version>           <solrj.version>4.10.3</solrj.version>      </properties>      <!-- 只定义依赖的版本，并不实际依赖 -->      <dependencyManagement>          <dependencies>               <!-- 时间操作组件 -->               <dependency>                    <groupId>joda-time</groupId>                    <artifactId>joda-time</artifactId>                    <version>${joda-time.version}</version>               </dependency>               <!-- Apache工具组件 -->               <dependency>                    <groupId>org.apache.commons</groupId>                    <artifactId>commons-lang3</artifactId>                    <version>${commons-lang3.version}</version>               </dependency>               <dependency>                    <groupId>org.apache.commons</groupId>                    <artifactId>commons-io</artifactId>                    <version>${commons-io.version}</version>               </dependency>               <dependency>                    <groupId>commons-net</groupId>                    <artifactId>commons-net</artifactId>                    <version>${commons-net.version}</version>               </dependency>               <!-- Jackson Json处理工具包 -->               <dependency>                    <groupId>com.fasterxml.jackson.core</groupId>                    <artifactId>jackson-databind</artifactId>                    <version>${jackson.version}</version>               </dependency>               <!-- httpclient调用服务用的客户端 -->               <dependency>                    <groupId>org.apache.httpcomponents</groupId>                    <artifactId>httpclient</artifactId>                    <version>${httpclient.version}</version>               </dependency>               <!-- 单元测试 -->               <dependency>                    <groupId>junit</groupId>                    <artifactId>junit</artifactId>                    <version>${junit.version}</version>                    <scope>test</scope>               </dependency>               <!-- 日志处理 -->               <dependency>                    <groupId>org.slf4j</groupId>                    <artifactId>slf4j-log4j12</artifactId>                    <version>${slf4j.version}</version>               </dependency>               <!-- Mybatis -->               <dependency>                    <groupId>org.mybatis</groupId>                    <artifactId>mybatis</artifactId>                    <version>${mybatis.version}</version>               </dependency>               <dependency>                    <groupId>org.mybatis</groupId>                    <artifactId>mybatis-spring</artifactId>                    <version>${mybatis.spring.version}</version>               </dependency>               <dependency>                    <groupId>com.github.miemiedev</groupId>                    <artifactId>mybatis-paginator</artifactId>                    <version>${mybatis.paginator.version}</version>               </dependency>               <dependency>                    <groupId>com.github.pagehelper</groupId>                    <artifactId>pagehelper</artifactId>                    <version>${pagehelper.version}</version>               </dependency>               <!-- MySql -->               <dependency>                    <groupId>mysql</groupId>                    <artifactId>mysql-connector-java</artifactId>                    <version>${mysql.version}</version>               </dependency>               <!-- 连接池 -->               <dependency>                    <groupId>com.alibaba</groupId>                    <artifactId>druid</artifactId>                    <version>${druid.version}</version>               </dependency>               <!-- Spring -->               <dependency>                    <groupId>org.springframework</groupId>                    <artifactId>spring-context</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-webmvc</artifactId>                    <version>${spring.version}</version>               </dependency>               <dependency>                    <groupId>org.springframework</groupId>                    <artifactId>spring-jdbc</artifactId>                    <version>${spring.version}</version>               </dependency>               <dependency>                    <groupId>org.springframework</groupId>                    <artifactId>spring-aspects</artifactId>                    <version>${spring.version}</version>               </dependency>               <!-- JSP相关 -->               <dependency>                    <groupId>jstl</groupId>                    <artifactId>jstl</artifactId>                    <version>${jstl.version}</version>               </dependency>               <dependency>                    <groupId>javax.servlet</groupId>                    <artifactId>servlet-api</artifactId>                    <version>${servlet-api.version}</version>                    <scope>provided</scope>               </dependency>               <dependency>                    <groupId>javax.servlet</groupId>                    <artifactId>jsp-api</artifactId>                    <version>${jsp-api.version}</version>                    <scope>provided</scope>               </dependency>               <!-- 文件上传组件 -->               <dependency>                    <groupId>commons-fileupload</groupId>                    <artifactId>commons-fileupload</artifactId>                    <version>${commons-fileupload.version}</version>               </dependency>               <!-- Redis客户端 -->               <dependency>                    <groupId>redis.clients</groupId>                    <artifactId>jedis</artifactId>                    <version>${jedis.version}</version>               </dependency>               <!-- solr客户端 -->               <dependency>                    <groupId>org.apache.solr</groupId>                    <artifactId>solr-solrj</artifactId>                    <version>${solrj.version}</version>               </dependency>          </dependencies>      </dependencyManagement>      <build>          <finalName>${project.artifactId}</finalName>          <plugins>               <!-- 资源文件拷贝插件 -->               <plugin>                    <groupId>org.apache.maven.plugins</groupId>                    <artifactId>maven-resources-plugin</artifactId>                    <version>2.7</version>                    <configuration>                        <encoding>UTF-8</encoding>                    </configuration>               </plugin>               <!-- java编译插件 -->               <plugin>                    <groupId>org.apache.maven.plugins</groupId>                    <artifactId>maven-compiler-plugin</artifactId>                    <version>3.2</version>                    <configuration>                        <source>1.7</source>                        <target>1.7</target>                        <encoding>UTF-8</encoding>                    </configuration>               </plugin>          </plugins>          <pluginManagement>               <plugins>                    <!-- 配置Tomcat插件 -->                    <plugin>                        <groupId>org.apache.tomcat.maven</groupId>                        <artifactId>tomcat7-maven-plugin</artifactId>                        <version>2.2</version>                    </plugin>               </plugins>          </pluginManagement>      </build> </project>

上面用的就是我们公司用的所有的jar包，注意这个taotao-parent的maven的工程的意义在于统一公司所有项目用的jar包的版本。

所以他的特点就是不实现具体的jar包依赖，

只实现版本的控制：

 <!-- 只定义版本，并不实际依赖-->
   <dependencyManagement>

加了这句话，我们就可以只控制版本，不实现具体的依赖。我们知道Maven的依赖需要三个坐标：

<groupId></groupId>
<artifactId></artifactId>
<version></version>

继承这个taotao-parent工程的项目，只需要两个坐标：

<groupId></groupId>
<artifactId></artifactId>
此时就不需要版本了，因为已经从继承中得到了版本号，所以不需要在定义


2.taotao-common

这个工程是存放公用的工具类：比如什么单元测试啊，json包什么的。因为公司的项目不会只有我们这么一个taotao项目用这些工具类，
别的项目也会有用的，所以我们呢把这些工具类统一出来。
建立过程如下：注意我们用的是jar.而且继承之前的taotao-parent工程。