Maven的增強

時間 2019-12-17

標籤 maven 增強欄目 Maven 简体版

原文原文鏈接

在settings文件中增長阿里雲鏡像java

<mirrors>
	 <mirror>
        <id>nexus-aliyun</id>
        <mirrorOf>*</mirrorOf>
        <name>Nexus aliyun</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </mirror>
  </mirrors>

特別注意點（文件的加載）mysql

<!-- 表示把配置文件打包到jar包中  否則會加載不到配置文件 -->
  	<build>
  		<resources>
  			<resource>
  				<directory>src/main/resource</directory>
  				<includes>
  					<include>**/*.properties</include>
  					<include>**/*.xml</include>
  				</includes>
  				<filtering>false</filtering>
  			</resource>
  		</resources>
  	</build>

1 回顧

1.1Maven的好處web

節省空間對jar包作了統一管理依賴管理spring

一鍵構建sql

可跨平臺數據庫

應用在大型項目可提升開發效率apache

1.2Maven安裝部署配置api

1.3Maven的倉庫tomcat

本地倉庫服務器

遠程倉庫（私服）

中央倉庫

1.4添加依賴

從網絡上搜索

在本地重建索引，以索引的方式搜索

1.5項目構建

1.6依賴範圍

Compile struts2 框架jar

Provided jsp-api.jar 重點

Runtime 數據庫驅動包

Test junit.jar

1.7總結

<modelVersion> 自帶的xsd約束的版本

座標 GAV

<groupId>cn.itcast</groupId>
<artifactId>ssh</artifactId>
<version>0.0.1-SNAPSHOT</version>

Packaging 打包方式

Jar war pom

<dependencies>

 <dependency>  依賴

<build>  裏面放的是插件

<plugins>

 <plugin>

2 整合ssh框架

2.1依賴傳遞

只添加了一個struts2-core依賴，發現項目中出現了不少jar，這種狀況叫依賴傳遞

2.2依賴版本衝突的解決（1，2 爲調節原則，3 爲排除原則，4 爲版本鎖定原則）

一、第一聲明優先原則

<dependencies>
  <!--   spring-beans-4.2.4 -->
  	<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-context</artifactId>
  		<version>4.2.4.RELEASE</version>
  	</dependency>  
  
<!--   spring-beans-3.0.5 -->
  	<dependency>
  		<groupId>org.apache.struts</groupId>
  		<artifactId>struts2-spring-plugin</artifactId>
  		<version>2.3.24</version>
  	</dependency>

二、路徑近者優先原則本身添加jar包

<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-beans</artifactId>
  		<version>4.2.4.RELEASE</version>
  	</dependency>

三、排除原則

<dependency>
  		<groupId>org.apache.struts</groupId>
  		<artifactId>struts2-spring-plugin</artifactId>
  		<version>2.3.24</version>
  		<exclusions>
  		  <exclusion>
  		    <groupId>org.springframework</groupId>
  		    <artifactId>spring-beans</artifactId>
  		  </exclusion>
  		</exclusions>
  	</dependency>

四、版本鎖定原則

<properties>
		<spring.version>4.2.4.RELEASE</spring.version>
		<hibernate.version>5.0.7.Final</hibernate.version>
		<struts.version>2.3.24</struts.version>
	</properties>

	<!-- 鎖定版本，struts2-2.3.2四、spring4.2.四、hibernate5.0.7 -->
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-context</artifactId>
				<version>${spring.version}</version>
			</dependency>
</dependencies>
</dependencyManagement>

需求：

傳客戶ID 頁面上顯示客戶信息

準備數據庫

2.3構建項目

一、建立數據庫，

二、執行準備好的sql腳本

三、完善pom.xml文件，把ssh相關的依賴都添加上去

<!-- 屬性 -->
	<properties>
		<spring.version>4.2.4.RELEASE</spring.version>
		<hibernate.version>5.0.7.Final</hibernate.version>
		<struts.version>2.3.24</struts.version>
	</properties>

	<!-- 鎖定版本，struts2-2.3.2四、spring4.2.四、hibernate5.0.7 -->
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-context</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-aspects</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-orm</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-test</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-web</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.hibernate</groupId>
				<artifactId>hibernate-core</artifactId>
				<version>${hibernate.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.struts</groupId>
				<artifactId>struts2-core</artifactId>
				<version>${struts.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.struts</groupId>
				<artifactId>struts2-spring-plugin</artifactId>
				<version>${struts.version}</version>
			</dependency>
		</dependencies>
	</dependencyManagement>
	<!-- 依賴管理 -->
	<dependencies>
		<!-- spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
		</dependency>
		<!-- hibernate -->
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
		</dependency>

		<!-- 數據庫驅動 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.6</version>
			<scope>runtime</scope>
		</dependency>
		<!-- c3p0 -->

		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>


		<!-- 導入 struts2 -->
		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-core</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-spring-plugin</artifactId>
		</dependency>

		<!-- servlet jsp -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.0</version>
			<scope>provided</scope>
		</dependency>
		<!-- 日誌 -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.2</version>
		</dependency>
		<!-- junit -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>
		<!-- jstl -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<!-- 設置編譯版本爲1.7 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>

			<!-- maven內置 的tomcat6插件 -->
			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>tomcat-maven-plugin</artifactId>
				<version>1.1</version>
				<configuration>
					<!-- 能夠靈活配置工程路徑 -->
					<path>/ssh</path>
					<!-- 能夠靈活配置端口號 -->
					<port>8080</port>
				</configuration>
			</plugin>
		</plugins>
	</build>

四、完成實體類代碼

五、完成dao代碼接口

package cn.itcast.dao;

import cn.itcast.entity.Customer;

public interface CustomerDao {
	
	public Customer getById(Long id);

}

實現類

package com.itcast.dao.impl;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
import cn.itcast.dao.CustomerDao;
import cn.itcast.entity.Customer;
public class CustomerDaoImpl extends HibernateDaoSupport implements CustomerDao {
	@Override
	public Customer getById(Long id) {
		return this.getHibernateTemplate().get(Customer.class, id);
	}
}

六、完成service代碼接口

package com.itcast.service;
import cn.itcast.entity.Customer;
public interface CustomerService {
	public Customer getById(Long id);
}

實現類

package com.itcast.service.impl;

import com.itcast.service.CustomerService;

import cn.itcast.dao.CustomerDao;
import cn.itcast.entity.Customer;

public class CustomerServiceImpl implements CustomerService {
	private CustomerDao  customerDao;
	public void setCustomerDao(CustomerDao customerDao) {
		this.customerDao = customerDao;
	}
	@Override
	public Customer getById(Long id) {
		return customerDao.getById(id);
	}
}

七、完成action代碼

package cn.itcast.action;
import com.itcast.service.CustomerService;
import com.opensymphony.xwork2.ActionSupport;
import cn.itcast.entity.Customer;
public class CutomerAction extends ActionSupport {
	//兩個成員變量
	private Customer  customer;
	
	private Long custId;
	public Customer getCustomer() {
		return customer;
	}
	public void setCustomer(Customer customer) {
		this.customer = customer;
	}
	private CustomerService customerService;
	public void setCustomerService(CustomerService customerService) {
		this.customerService = customerService;
	}
	public Long getCustId() {
		return custId;
	}
	public void setCustId(Long custId) {
		this.custId = custId;
	}
	public String findById(){
		customer = customerService.getById(custId);
		return SUCCESS;
	}
}

八、拷貝配置文件並修改

從以下圖位置拿到配置文件

放入到 src/main/resources目錄中

修改內容略

九、修改web.xml 添加spring的監聽

<listener>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>	
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

十、運行項目

3 分模塊開發

依賴範圍對依賴傳遞形成的影響（瞭解）

父工程來管理聚合

3.1建立父工程：

三、在pom.Xml中添加如下信息：

<!-- 屬性 -->
	<properties>
		<spring.version>4.2.4.RELEASE</spring.version>
		<hibernate.version>5.0.7.Final</hibernate.version>
		<struts.version>2.3.24</struts.version>
	</properties>

	<!-- 鎖定版本，struts2-2.3.2四、spring4.2.四、hibernate5.0.7 -->
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-context</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-aspects</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-orm</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-test</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-web</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.hibernate</groupId>
				<artifactId>hibernate-core</artifactId>
				<version>${hibernate.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.struts</groupId>
				<artifactId>struts2-core</artifactId>
				<version>${struts.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.struts</groupId>
				<artifactId>struts2-spring-plugin</artifactId>
				<version>${struts.version}</version>
			</dependency>
		</dependencies>
	</dependencyManagement>
	<!-- 依賴管理 -->
	<dependencies>
		<!-- spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
		</dependency>
		<!-- hibernate -->
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
		</dependency>

		<!-- 數據庫驅動 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.6</version>
			<scope>runtime</scope>
		</dependency>
		<!-- c3p0 -->

		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>


		<!-- 導入 struts2 -->
		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-core</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-spring-plugin</artifactId>
		</dependency>

		<!-- servlet jsp -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.0</version>
			<scope>provided</scope>
		</dependency>
		<!-- 日誌 -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.2</version>
		</dependency>
		<!-- junit -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>
		<!-- jstl -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<!-- 設置編譯版本爲1.7 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>

			<!-- maven內置 的tomcat6插件 -->
			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>tomcat-maven-plugin</artifactId>
				<version>1.1</version>
				<configuration>
					<!-- 能夠靈活配置工程路徑 -->
					<path>/ssh</path>
					<!-- 能夠靈活配置端口號 -->
					<port>8080</port>
				</configuration>
			</plugin>

		</plugins>
	</build>

四、發佈到本地倉庫

dao service web 3.2建立dao子模塊一、在ssh-parent項目上右擊，建立時選擇 Maven Module

二、填寫子模塊名稱ssh-dao

三、把屬於dao的代碼拷貝到該模塊中：

四、完成後發佈到本地倉庫中

3.3建立service子模塊一、建立方式如上：二、把屬於service的代碼拷貝到該工程中

三、發佈到本地倉庫中

3.4建立Action子模塊一、選擇war的打包方式

五、拷貝屬於action的代碼和配置文件

六、修改web.xml 添加spring監聽

<listener>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>	
	
<context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath*:applicationContext-*.xml</param-value>
</context-param>

四、添加頁面：

四私服 nexus

啓動失敗的解決方法：

登陸nexus 用戶名/密碼 admin/admin123

倉庫類型

Virtual 虛擬倉庫

Proxy 代理倉庫

Hosted 宿主倉庫本地倉庫

Group 組

需求：

把dao放到私服上，而後service從私服上下載

需求：將ssh_dao的這個工程打成jar包，並放入到私服上去.

4.1上傳dao

第一步：須要在客戶端即部署dao工程的電腦上配置 maven環境，並修改 settings.xml 文件，配置鏈接私服的用戶和密碼。

此用戶名和密碼用於私服校驗，由於私服須要知道上傳都的帳號和密碼是否和私服中的帳號和密碼一致。

<server>
      <id>releases</id>
      <username>admin</username>
      <password>admin123</password>
    </server>
	<server>
      <id>snapshots</id>
      <username>admin</username>
      <password>admin123</password>
    </server>

第二步：配置項目pom.xml

配置私服倉庫的地址，本公司的本身的jar包會上傳到私服的宿主倉庫，根據工程的版本號決定上傳到哪一個宿主倉庫，若是版本爲release則上傳到私服的release倉庫，若是版本爲snapshot則上傳到私服的snapshot倉庫

<distributionManagement>
  	<repository>
  		<id>releases</id>
	<url>http://localhost:8081/nexus/content/repositories/releases/</url>
  	</repository> 
  	<snapshotRepository>
  		<id>snapshots</id>
	<url>http://localhost:8081/nexus/content/repositories/snapshots/</url>
  	</snapshotRepository> 
  </distributionManagement>

注意：pom.xml這裏<id> 和 settings.xml 配置 <id> 對應！

第三步：執行deploy命令發佈到私服

4.2下載dao

第一步修改settings.xml

<profile>   
	<!--profile的id-->
    <id>dev</id>   
    <repositories>   
      <repository>  
		<!--倉庫id，repositories能夠配置多個倉庫，保證id不重複-->
        <id>nexus</id>   
		<!--倉庫地址，即nexus倉庫組的地址-->
        <url>http://localhost:8081/nexus/content/groups/public/</url>   
		<!--是否下載releases構件-->
        <releases>   
          <enabled>true</enabled>   
        </releases>   
		<!--是否下載snapshots構件-->
        <snapshots>   
          <enabled>true</enabled>   
        </snapshots>   
      </repository>   
    </repositories>  
	 <pluginRepositories>  
    	<!-- 插件倉庫，maven的運行依賴插件，也須要從私服下載插件 -->
        <pluginRepository>  
        	<!-- 插件倉庫的id不容許重複，若是重複後邊配置會覆蓋前邊 -->
            <id>public</id>  
            <name>Public Repositories</name>  
            <url>http://localhost:8081/nexus/content/groups/public/</url>  
        </pluginRepository>  
    </pluginRepositories>  
  </profile>  

  <activeProfiles>
    <activeProfile>dev</activeProfile>
  </activeProfiles>

第二步刪除本地倉庫中的dao

第三步 update service工程，出現如下信息說明已經成功

maven Console

服務器上一些存儲文件的位置