Maven02——回顾、整合ssh框架、分模块开发、私服
1 回顾
1.1 Maven的好处
节省空间 对jar包做了统一管理 依赖管理
一键构建
可跨平台
应用在大型项目可提高开发效率
1.2 Maven安装部署配置
1.3 Maven的仓库
本地仓库
远程仓库（私服）
中央仓库
1.4 添加依赖
从网络上搜索：
http://mvnrepository.com/（推荐）
在本地重建索引，以索引的方式搜索
1.5 项目构建
1.6 依赖范围
Compile struts2 框架jar
Provided jsp-api.jar 重点（因为他会和tomcat的包相冲突）
Runtime 数据库驱动包
Test junit.jar
1.7 总结
<modelVersion>
坐标 GAV
<groupId>cn.itcast</groupId>
<artifactId>ssh</artifactId>
<version>0.0.1-SNAPSHOT</version>
Packaging 打包方式
Jar war pom
<dependencies>
<dependency>
<build> 里面放的是插件
<plugins>
<plugin>
2 整合ssh框架
2.1 依赖传递
只添加了一个struts2-core依赖，发现项目中出现了很多jar，
这种情况 叫 依赖传递
2.2 依赖版本冲突的解决
1、 第一声明优先原则
<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>
2、 路径近者优先原则
自己添加jar包
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.2.4.RELEASE</version> </dependency>
3、 排除原则
<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>
4、 版本锁定原则
<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> <!-- 锁定版本，struts2-2.3.24、spring4.2.4、hibernate5.0.7 --> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> </dependencies> </dependencyManagement>
需求：
传客户ID 页面上显示客户信息
准备数据库
2.3 构建项目
1、 创建数据库，
2、 执行准备好的sql脚本
Sql脚本的位置：
3、 完善pom.xml文件，把ssh相关的依赖都添加上去
<!-- 属性 --> <properties> <spring.version>4.2.4.RELEASE</spring.version> <hibernate.version>5.0.7.Final</hibernate.version> <struts.version>2.3.24</struts.version> </properties> <!-- 锁定版本，struts2-2.3.24、spring4.2.4、hibernate5.0.7 --> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${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> <!-- 依赖管理 --> <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> <!-- 数据库驱动 --> <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> <!-- 导入 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> <!-- 日志 --> <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> <!-- 设置编译版本为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内置 的tomcat6插件 --> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>tomcat-maven-plugin</artifactId> <version>1.1</version> <configuration> <!-- 可以灵活配置工程路径 --> <path>/ssh</path> <!-- 可以灵活配置端口号 --> <port>8080</port> </configuration> </plugin> </plugins> </build>
4、 完成实体类代码
public class Customer { private Long custId; private String custName; private Long custUserId; private Long custCreateId; private String custIndustry; private String custLevel; private String custLinkman; private String custPhone; private String custMobile; public Long getCustId() { return custId; } ..省略get set方法
5、 完成dao代码
接口 package cn.itcast.dao; import cn.itcast.entity.Customer; public interface CustomerDao { public Customer getById(Long id); } 实现类 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); } }
配置好spring，添加customer的bean注入sessionFactory，然后右键java文件进行junit测试
6、 完成service代码
接口 package com.itcast.service; import cn.itcast.entity.Customer; public interface CustomerService { public Customer getById(Long id); } 实现类 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); } }
7、 完成action代码
package cn.itcast.action; import com.itcast.service.CustomerService; import com.opensymphony.xwork2.ActionSupport; import cn.itcast.entity.Customer; public class CutomerAction extends ActionSupport { //两个成员变量 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; } }
8、 拷贝配置文件并修改
从如下图位置拿到配置文件
放入到 src/main/resources目录中
修改内容 略
9、 修改web.xml 添加spring的监听
<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>
10、 运行项目
3 分模块开发
依赖范围对依赖传递造成的影响（了解）
Service直接依赖dao（默认是compile） 而从dao传递过来的junit依赖范围是test的 所以service里面不会收到junit
父工程来管理 聚合
3.1 创建父工程：
1、
2、创建出的父工程如下
3、在pom.Xml中添加以下信息：
<!-- 属性 --> <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> <!-- 锁定版本，struts2-2.3.24、spring4.2.4、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> <!-- 依赖管理 --> <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> <!-- 数据库驱动 --> <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> <!-- 导入 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> <!-- 日志 --> <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> <!-- 设置编译版本为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内置 的tomcat6插件 --> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>tomcat-maven-plugin</artifactId> <version>1.1</version> <configuration> <!-- 可以灵活配置工程路径 --> <path>/ssh</path> <!-- 可以灵活配置端口号 --> <port>8080</port> </configuration> </plugin> </plugins> </build>
4、发布到本地仓库
dao service web
3.2 创建dao子模块
1、在ssh-parent项目上右击 ，创建时选择 Maven Module
2、填写子模块名称ssh-dao
3、把属于dao的代码拷贝到 该模块中：
4、完成后发布到本地仓库中
3.3 创建service子模块
1、创建方式如上：
2、把属于service的代码拷贝到该工程中
3、发布到本地仓库中
Service的Junit测试 //@ContextConfiguration(locations={"classpath*:applicationContext-*.xml"}) 第一个*是为了在jar包里面查找 @ContextConfiguration(locations={"classpath:applicationContext-dao.xml","classpath:applicationContext-service.xml"}) @RunWith(SpringJUnit4ClassRunner.class) public class CustomerServiceImplTest { // @Test // public void test() { // ApplicationContext app = new ClassPathXmlApplicationContext("classpath:applicationContext-dao.xml"); // CustomerDao customerDao = (CustomerDao) app.getBean("customerDao"); // Customer customer = customerDao.findById(23L); // System.out.println("********************"+customer.getCustName()); // } @Autowired private CustomerService customerService; @Test public void test() { // Customer customer = customerService.findById(1L); // System.out.println("********************"+customer.getCustName()); } }
3.4 创建Action子模块
1、选择war的打包方式
2、 拷贝属于action的代码和配置文件
3、 修改web.xml 添加spring监听
<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>
4、添加页面：
4 私服 nexus
安装nexus
启动服务
启动失败的解决方法：
登录nexus
用户名/密码 admin/admin123
仓库类型
Virtual 虚拟仓库
Proxy 代理仓库
Hosted 宿主仓库 本地仓库
Group 组
需求：
把dao放到私服上，然后service从私服上下载
需求 ：将ssh_dao的这个工程打成jar包，并放入到私服上去.
4.1 上传dao
第一步： 需要在客户端即部署dao工程的电脑上配置 maven环境，并修改 settings.xml 文件，配置连接私服的用户和密码 。
此用户名和密码用于私服校验，因为私服需要知道上传都 的账号和密码 是否和私服中的账号和密码 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： 配置项目pom.xml
配置私服仓库的地址，本公司的自己的jar包会上传到私服的宿主仓库，根据工程的版本号决定上传到哪个宿主仓库，如果版本为release则上传到私服的release仓库，如果版本为snapshot则上传到私服的snapshot仓库
<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这里<id> 和 settings.xml 配置 <id> 对应！
第三步：执行deploy命令发布到私服
4.2 下载dao
第一步 修改settings.xml
<profile> <!--profile的id--> <id>dev</id> <repositories> <repository> <!--仓库id，repositories可以配置多个仓库，保证id不重复--> <id>nexus</id> <!--仓库地址，即nexus仓库组的地址--> <url>http://localhost:8081/nexus/content/groups/public/</url> <!--是否下载releases构件--> <releases> <enabled>true</enabled> </releases> <!--是否下载snapshots构件--> <snapshots> <enabled>true</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <!-- 插件仓库，maven的运行依赖插件，也需要从私服下载插件 --> <pluginRepository> <!-- 插件仓库的id不允许重复，如果重复后边配置会覆盖前边 --> <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 删除本地仓库中的dao
第三步 update service工程，出现以下信息说明已经成功
如果项目开发途中dao修改了内容，那么重新上传的时候记得要改版本号，不然service这边是下载不了的，因为maven不会对比用一个版本的不同文件的大小。
版权声明：本文为xieyupeng原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。