项目管理工具maven（二）

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

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

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);
}

}

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）

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

3.4 创建Action子模块

1、选择war的打包方式

5、 拷贝属于action的代码和配置文件

6、 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