ssh_maven的搭建之dao层的开发

Posted 2020-10-30 wh-share

　　之前都是使用我们传统的方式进行引入jar包，现在我们使用maven进行管理依赖，这样，我们的jar就不需要我们进行管理，而且，我们的maven还可以进行项目构建，一个项目从编写源代码到编译，测试，运行，打包，部署的过程，只需要对应的一个命令即可以了，方便了很多

　　这里，我们直接进入主题，像eclipse中怎么配置maven等这里我们暂时不说，直接从创建项目开始，而且我们采用的是纯配置文件的方式

　　我们可以看一下我们的目录结构

　　这咯我们的ssh_parent是父工程，而剩下的都是它的子模块

　　

　　这里我们的ssh_parent是父工程，是pom类型，主要作用，就是聚合我们的子模块

　　这里我们的子模块ssh_dao,ssh_service,是jar类型，

　　这里我们的子模块ssh_controller,是war类型

　　1.我们先把我们的父工程搭建好

　　这是我们父工程的pom.xml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.itheima</groupId>
  <artifactId>ssh_parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
      <module>ssh_dao</module>
      <module>ssh_service</module>
      <module>ssh_controller</module>
  </modules>
  <!-- 为了确定每个框架的版本号 -->
  <!-- 锁定版本 -->
   <properties>
        <spring.version>4.2.4.RELEASE</spring.version>
        <struts2.version>2.3.24</struts2.version>
        <hibernate.version>5.0.7.Final</hibernate.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <shiro.version>1.2.3</shiro.version>
        <cxf.version>3.0.1</cxf.version>
        <c3p0.version>0.9.1.2</c3p0.version> 
        <mysql.version>5.1.6</mysql.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>${struts2.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.struts</groupId>
                <artifactId>struts2-spring-plugin</artifactId>
                <version>${struts2.version}</version>
            </dependency>

        </dependencies>
    </dependencyManagement>
  
  <dependencies>
      <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.4</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.37</version>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.1</version>
        </dependency>
        <!-- <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.2.1</version>
        </dependency> -->
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
    
        <!-- jstl -->
         <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
        </dependency>
        
        <!-- shiro -->
         <!-- apache shiro dependencies -->
         <!-- <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-all</artifactId>
            <version>${shiro.version}</version>
         </dependency> -->

      
       <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>
        
         <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>${spring.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context-support</artifactId>
          <version>${spring.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</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-beans</artifactId>
          <version>${spring.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>${spring.version}</version>
        </dependency>
        
    
        
        <!-- struts2  begin -->
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>${struts2.version}</version>
            <exclusions>
                <exclusion>
                    <artifactId>javassist</artifactId>
                    <groupId>javassist</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-spring-plugin</artifactId>
            <version>${struts2.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-json-plugin</artifactId>
            <version>${struts2.version}</version>
        </dependency>
        <dependency>
              <groupId>org.apache.struts</groupId>
              <artifactId>struts2-convention-plugin</artifactId>
              <version>${struts2.version}</version>
          </dependency>
        <!-- struts2  end -->
        
        <!-- hibernate begin -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.2.1.Final</version>
        </dependency>
        <!-- hibernate end -->
        
        <dependency>
              <groupId>c3p0</groupId>
              <artifactId>c3p0</artifactId>
              <version>${c3p0.version}</version>
          </dependency>
        
        <!-- <dependency> 
            <groupId>org.apache.cxf</groupId> 
            <artifactId>cxf-rt-frontend-jaxws</artifactId> 
            <version>${cxf.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.apache.cxf</groupId> 
            <artifactId>cxf-rt-transports-http</artifactId> 
            <version>${cxf.version}</version> 
        </dependency> -->
        
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        
        <!-- Javamail -->
    <!--     <dependency>
          <groupId>javax.mail</groupId>
          <artifactId>mail</artifactId>
          <version>1.4.4</version>
        </dependency> -->
        
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
    
        <!-- <dependency>
            <groupId>org.codehaus.xfire</groupId>
            <artifactId>xfire-core</artifactId>
            <version>1.2.6</version>
        </dependency>  -->
        
        <dependency>
           <groupId>dom4j</groupId>
           <artifactId>dom4j</artifactId>
           <version>1.6</version>
        </dependency>
    
        <!-- <dependency> 
            <groupId>org.apache.poi</groupId> 
            <artifactId>poi</artifactId> 
            <version>3.11</version> 
        </dependency>
        <dependency> 
            <groupId>org.apache.poi</groupId> 
            <artifactId>poi-ooxml</artifactId> 
            <version>3.11</version> 
        </dependency>
        <dependency> 
            <groupId>org.apache.poi</groupId> 
            <artifactId>poi-ooxml-schemas</artifactId> 
            <version>3.11</version> 
        </dependency> -->
    
       
       
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
       <!--  <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc14</artifactId>
            <version>10.2.0.4.0</version>
        </dependency> -->
       <!--  <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency> -->
        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache-core</artifactId>
            <version>2.6.6</version>
        </dependency>
        
        <!-- <dependency>
               <groupId>javax.el</groupId>
              <artifactId>javax.el-api</artifactId>
            <version>2.2.4</version>
        </dependency> -->
        <!-- <dependency>
               <groupId>org.glassfish.web</groupId>
               <artifactId>javax.el</artifactId>
               <version>2.2.4</version>
        </dependency> -->
  </dependencies>
  
   <build>
    <pluginManagement>
        <plugins>
            <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>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>
</project>

　　2.我们开发我们的dao层的开发，这是我们的目录结构

　　

　　dao层我们需要创建我们的实体类，dao层接口，dao层实现类，需要我们的applicationContext-dao.xml文件

　　Customer实体类

package com.itheima.entity;
public class Customer {
    private Long custId;
    private String custName;
    private String custSource;
    private String custIndustry;
    private String custLevel;
    private String custAddress;
    private String custPhone;
    
    public Long getCustId() {
        return custId;
    }
    public void setCustId(Long custId) {
        this.custId = custId;
    }
    public String getCustName() {
        return custName;
    }
    public void setCustName(String custName) {
        this.custName = custName;
    }
    public String getCustSource() {
        return custSource;
    }
    public void setCustSource(String custSource) {
        this.custSource = custSource;
    }
    public String getCustIndustry() {
        return custIndustry;
    }
    public void setCustIndustry(String custIndustry) {
        this.custIndustry = custIndustry;
    }
    public String getCustLevel() {
        return custLevel;
    }
    public void setCustLevel(String custLevel) {
        this.custLevel = custLevel;
    }
    public String getCustAddress() {
        return custAddress;
    }
    public void setCustAddress(String custAddress) {
        this.custAddress = custAddress;
    }
    public String getCustPhone() {
        return custPhone;
    }
    public void setCustPhone(String custPhone) {
        this.custPhone = custPhone;
    }
    @Override
    public String toString() {
        return "Customer [custId=" + custId + ", custName=" + custName + ", custSource=" + custSource
                + ", custIndustry=" + custIndustry + ", custLevel=" + custLevel + ", custAddress=" + custAddress
                + ", custPhone=" + custPhone + "]";
    }
    
}

　　CustomerDao代码

package com.itheima.dao;

import java.util.List;

import org.springframework.orm.hibernate5.support.HibernateDaoSupport;

import com.itheima.entity.Customer;

public interface CustomerDao {
    /**
     * 添加一个客户
     */
    public void saveCustomer(Customer customer);
    /**
     * 插叙所有的客户信息
     */
    public List<Customer> findAllCustomer();
}

　　CustomerDaoImpl实现类

　　注：这里我们直接继承我们的HibernateDaoSupport的话，要注入sessionFactory,完了会返回给你一个hibernateTemplate

package com.itheima.dao.impl;

import java.util.List;

import org.springframework.orm.hibernate5.support.HibernateDaoSupport;

import com.itheima.dao.CustomerDao;
import com.itheima.entity.Customer;

public class CustomerDaoImpl extends HibernateDaoSupport implements CustomerDao{

    public void saveCustomer(Customer customer) {
        this.getHibernateTemplate().save(customer);
    }

    public List<Customer> findAllCustomer() {
        return (List<Customer>) this.getHibernateTemplate().find("from Customer");
    }
}

　　我们的applicationContext-dao.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 数据源的配置 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql:///ssh_280"></property>
        <property name="user" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    <!-- sessionFactory的配置 -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <!-- 配置数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 配置hibernate配置文件 -->
        <property name="configLocations" value="classpath:hibernate.cfg.xml"></property>
    </bean>
    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!-- 配置事务的通知 -->
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED" read-only="false" />
            <tx:method name="update*" propagation="REQUIRED" read-only="false" />
            <tx:method name="delete*" propagation="REQUIRED" read-only="false" />
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- 配置切面 -->
    <aop:config>
        <aop:pointcut expression="execution(* com.itheima.service.*.*(..))" id="pt"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
    </aop:config>
    
    <bean id="customerDao" class="com.itheima.dao.impl.CustomerDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
</beans>

　　hibernate.cfg.xml文件

<?xml version=‘1.0‘ encoding=‘utf-8‘?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <!-- 会话工厂 -->
    <session-factory>
        <!-- 数据库方言，根据数据库选择 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <!--为了方便调试是否在运行hibernate时在日志中输出sql语句 -->
        <property name="hibernate.show_sql">true</property>
        <!-- 是否对日志中输出的sql语句进行格式化 -->
        <property name="hibernate.format_sql">true</property>
        <property name="hibernate.hbm2ddl.auto">none</property>
  
        <!-- 加载映射文件 -->
        <mapping resource="com/itheima/entity/Customer.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

　　Customer.hbm.xml对象关系映射文件（我们这个文件要放到跟我们的Customer同级目录，我们可以在我们的resource中创建一个同样的实体类的路径）

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.itheima.entity.Customer" table="cst_customer">
        <id name="custId" column="cust_id">
            <generator class="native"></generator>
        </id>
        <property name="custName" column="cust_name"></property>
        <property name="custSource" column="cust_source"></property>
        <property name="custIndustry" column="cust_industry"></property>
        <property name="custLevel" column="cust_level"></property>
        <property name="custAddress" column="cust_address"></property>
        <property name="custPhone" column="cust_phone"></property>
    </class>
</hibernate-mapping>

　　在测试之前，我们加入我们测试的jar(这里的jar包只需要在仓库中搜索就行)

　　pom.xml　

<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.itheima</groupId>
    <artifactId>ssh_parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>ssh_dao</artifactId>
  <dependencies>
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.10</version>
      </dependency>
  </dependencies>
</project>

 

　这样，我们可以先来测试一下我们的dao层

package com.itheima.test;

import java.util.List;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.itheima.dao.CustomerDao;
import com.itheima.entity.Customer;

public class CustomerDaoTest {
    @Test
    public void findAllCustomerTest(){
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext-dao.xml");
        CustomerDao customerDao = (CustomerDao) ac.getBean("customerDao");
        List<Customer> list = customerDao.findAllCustomer();
        for (Customer customer : list) {
            System.out.println(customer.getCustName());
        }
    }
}

　　　测试一下我们的dao层

　　　

　　这样的话，我们的dao层的开发就完成了！