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

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原文地址：https://www.cnblogs.com/alexzhang92/p/10217267.html

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