maven的聚合和繼承，maven的依賴

1.maven如果沒有看過系統的視頻其實是不好理解的，但是當你看了maven的完整使用以后你就會覺得maven很好用

*一個完整的maven工程應該有多個工程組成

*創建一個父類工程，此工程為所有工程的父類工程，只解決jar包的版本控制，這個工程沒有任何代碼。

也就是只需要對maven的pom文件進行修改，且package類型為pom

父類工程的示例pom文件

<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>
<!-- 集中定義依賴版本號 -->
<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</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>
<dependencyManagement>
<dependencies>
<!-- 時間操作組件 -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>${joda-time.version}</version>
</dependency>
<!-- Apache工具組件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${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處理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>${httpclient.version}</version>
</dependency>
<!-- 單元測試 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- 日志處理 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${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>${mysql.version}</version>
</dependency>
<!-- 連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${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>${spring.version}</version>
</dependency>
<!-- JSP相關 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${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>
<!-- 文件上傳組件 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload.version}</version>
</dependency>
<!-- Redis客戶端 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>${jedis.version}</version>
</dependency>
<!-- solr客戶端 -->
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>${solrj.version}</version>
</dependency>
</dependencies>
</dependencyManagement>

<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<!-- 資源文件拷貝插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- java編譯插件 -->
<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>

 

*然后我們需要創建一個工具類的工程，這個工程向項目中提供需要的工具類，當然這個工程是父類工程的子類工程，這個工程會被當成工具使用，所以他

的package應該是jar

父類工程的示例pom文件

 

<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- jar包的依賴 -->
<dependencies>
<!-- 時間操作組件 -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
</dependency>
<!-- Apache工具組件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
</dependency>
<!-- Jackson Json處理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
<!-- 單元測試 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!-- 日志處理 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
</project>

這個工程需要下載所需要的jar包，后面所有工程都需要下載jar包，父類沒有下載，只是定義了版本號，所以這兒的工程依賴都只有groupId和

artifactId，不需要定義版本

*創建一個工程的管理工程，這個工程只是一個管理工程，沒有實際的代碼，由於工程中需要使用到工具工程，所以必須依賴工具工程，當然他必須繼承

父類工程

 

管理工程的示例pom文件

<?xml version="1.0" encoding="UTF-8"?>
<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>

<dependencies>
<dependency>
<groupId>com.taotao</groupId>
<artifactId>taotao-common</artifactId>
<version>0.0.1-SNAPSHOT</version>

</dependency>

</dependencies>

 

<modules>
<module>taotao-manager-pojo</module>
<module>taotao-manager-mapper</module>
<module>taotao-manager-service</module>
<module>taotao-manager-web</module>
</modules>

<build>
<!-- 配置插件 -->
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<port>8080</port>
<path>/</path>
<url>http://192.168.25.135:8080/manager/text</url>
<username>tomcat</username>
<password>tomcat</password>
</configuration>
</plugin>
</plugins>
</build>
</project>

由於最后是通過tomcat運行此工程，所以在此工程的pom中添加tomcat插件，而modules就是我們在下面需要建立的模塊，是這些模塊共同構成了這個管理工程

 

*建立pojo模塊，此模塊只是實體類，所以沒有任何依賴

pojo模塊的示例pom

<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>taotao-manager-pojo</artifactId>
</project>

由於是管理工程的模塊，由於管理工程繼承了父類工程，所以他也繼承了父類工程，此模塊只書寫實體類的代碼

 

 

*建立mapper模塊，此模塊是mapper借口和mybatis的xml文件，所以他依賴實體類和mybatis的相關jar包

mapper模塊的示例pom

<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>taotao-manager-mapper</artifactId>
<!-- 依賴管理 -->
<dependencies>
<!-- 依賴taotao-manager-pojo -->
<dependency>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager-pojo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
<dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- 連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
</dependencies>
<!-- 如果不添加此節點mybatis的mapper.xml文件都會被漏掉。 -->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
</project>

 

依賴pojo模塊和使用mybatis需要的jar包

 

 

*建立service模塊，此模塊是業務邏輯層模塊，主要處理邏輯方面，需要調用mapper，所以對mapper依賴，用到spring注入，所以需要spring的一些jar包

service模塊的示例pom

<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>taotao-manager-service</artifactId>
<!-- 依賴管理 -->
<dependencies>
<dependency>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager-mapper</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
</dependencies>
</project>

依賴spring的注入和mapper借口，所以需要這兩種依賴

 

*建立web模塊，也就是controller層模塊，需要特別注意此模塊的package為war，需要依賴service和spring mvc等，所以是需要的依賴較多的模塊

web模塊的示例pom

<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>
<parent>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>taotao-manager-web</artifactId>
<packaging>war</packaging>
<!-- 依賴管理 -->
<dependencies>
<dependency>
<groupId>com.taotao</groupId>
<artifactId>taotao-manager-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- JSP相關 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- 文件上傳組件 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
</dependency>
</dependencies>
</project>

 

看了這個我有一些奇怪，為什么會沒有spring的依賴呢，，，，，，仔細看，以為他依賴了service，由於service有spring的依賴，所以他自然也有了spring的依賴

 

*****工程就創建好了，我們運行的時候是運行管理聚合的那個工程，這個工程需要到父類工程和工具工程，所以在運行管理工程之前我們要將父類工程和工具類

工程加入到本地倉庫，選中需要加入的工程，使用命令  mvn install ，加入本地倉庫以后，我們在選中管理工程，通過 tomcat7：run，就可以啟動此聚合工程。

可以通過tomcat：run啟動，但是這樣是默認的tomcat6，我們安裝的是tomcat7的插件