JavaWeb搭建网上图书商城毕业设计

  以前一直接触.net相关的web开发,现在猛然使用javaWeb还是很不习惯,就连搭个框架也是第一次。

一、谈谈项目架构

  一开始接触.net相关的开发所以对于.net相关的开发还是比较熟悉的,但我在学校学的java方向的开发,而我打算把这两种平台结合起来,使用java做后台也就是服务提供者,将所有业务逻辑在java平台完成并使用我比较熟悉的.net做Web端的开发。这样一来安卓app,web端就都有了。客户端统一通过分布式框架调用服务。找了很久最终选择了Hprose,这一轻量级、跨语言、跨平台、无侵入式、高性能动态远程对象调用引擎库。之所以选择它一方面是因为学习成本低,另一方面是它的跨平台调用非常轻松高效,因为我们要使用.net做web需要调用java发布的服务!大概看了一下Hprose的文档,发现使用内置的HproseServlet发布服务开发速度比较快也比较简单,所以准备使用这种方式发布服务。可问题来了,传统的ssh架构感觉有点重了,准备使用.net开发web端所以感觉没有必要整合Struts,于是就是hibernate+spring+hprose这种架构。

二、数据库设计

  一个小网上书城,所以设计的还有欠缺,以实用为主,主要是练手java开发~~。所以使用了navicat简单设计了一下,不过没有设计表关联,取而代之的是后来一个一个添加关系的,发现这个设计工具有点问题,图示:

其实表关联一看就能看出来~~,接下来就是hibernate一些映射了,同样也是使用插件生成model和映射文件

稍作修改就是这样--

三、spring3+hibernate4配置

  因为model和映射文件是自动生成所以稍加配置就好,需要注意的是复合主键的设置,自动生成的会把复合主键对应一个复合模型。如商品评论表的复合主键类型

package com.book.model;

// Generated 2015-11-2 9:07:06 by Hibernate Tools 4.0.0.Final

import java.util.Date;

/**

* CommentsId generated by hbm2java

*/

public class CommentsPk implements java.io.Serializable {

private Book book;

private User user;

private Date commentsDate;

public CommentsPk() {

}

public CommentsPk(Book book, User user, Date commentsDate) {

this.book = book;

this.user = user;

this.commentsDate = commentsDate;

}

public Book getBook() {

return this.book;

}

public void setBook(Book book) {

this.book = book;

}

public User getUser() {

return this.user;

}

public void setUser(User user) {

this.user = user;

}

public Date getCommentsDate() {

return this.commentsDate;

}

public void setCommentsDate(Date commentsDate) {

this.commentsDate = commentsDate;

}

public boolean equals(Object other) {

if ((this == other))

return true;

if ((other == null))

return false;

if (!(other instanceof CommentsPk))

return false;

CommentsPk castOther = (CommentsPk) other;

return ((this.getBook() == castOther.getBook()) || (this.getBook() != null && castOther.getBook() != null

&& this.getBook().equals(castOther.getBook())))

&& ((this.getUser() == castOther.getUser()) || (this.getUser() != null && castOther.getUser() != null

&& this.getUser().equals(castOther.getUser())))

&& ((this.getCommentsDate() == castOther.getCommentsDate())

|| (this.getCommentsDate() != null && castOther.getCommentsDate() != null

&& this.getCommentsDate().equals(castOther.getCommentsDate())));

}

public int hashCode() {

int result = 17;

result = 37 * result + (getBook() == null ? 0 : this.getBook().hashCode());

result = 37 * result + (getUser() == null ? 0 : this.getUser().hashCode());

result = 37 * result + (getCommentsDate() == null ? 0 : this.getCommentsDate().hashCode());

return result;

}

}

商品评论表模型

package com.book.model;

// Generated 2015-10-30 14:56:21 by Hibernate Tools 4.0.0.Final

import java.sql.Date;

/**

* Comments generated by hbm2java

*/

public class Comments implements java.io.Serializable {

private String content;

private String pic;

private Integer client;

private CommentsPk id;

public Comments()

{

}

public String getContent() {

return content;

}

public void setContent(String content) {

this.content = content;

}

public String getPic() {

return pic;

}

public void setPic(String pic) {

this.pic = pic;

}

public Integer getClient() {

return client;

}

public void setClient(Integer client) {

this.client = client;

}

public CommentsPk getId() {

return id;

}

public void setId(CommentsPk id) {

this.id = id;

}

public Comments(String content, String pic, Integer client, CommentsPk id) {

super();

this.content = content;

this.pic = pic;

this.client = client;

this.id = id;

}

}

相应的Hibernate 映射文件:

<?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">

<!-- Generated 2015-10-30 14:56:21 by Hibernate Tools 4.0.0.Final -->

<hibernate-mapping>

<class name="com.book.model.Comments" table="comments" catalog="bookstore">

<composite-id name="id" class="com.book.model.CommentsPk">

<key-many-to-one name="book" class="com.book.model.Book">

<column name="BookID" />

</key-many-to-one>

<key-many-to-one name="user" class="com.book.model.User">

<column name="UserID" />

</key-many-to-one>

<key-property name="commentsDate" type="timestamp">

<column name="CommentsDate" length="19" />

</key-property>

</composite-id>

<property name="content" type="string">

<column name="Content" length="65535" />

</property>

<property name="pic" type="string">

<column name="Pic" length="65535" />

</property>

<property name="client" type="java.lang.Integer">

<column name="Client" />

</property>

</class>

</hibernate-mapping>

因为商品评论表有两个是外键所以使用了key-many-to-one标签。

由于采用spring3.2+hibernate4.1所以得到sessionFactory的方式只限于sessionFactory.getCurrentSession();但是必须开启事物:   

<bean id="transactionManager"

class="org.springframework.orm.hibernate4.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 事务的传播特性 -->

<tx:advice id="txadvice" transaction-manager="transactionManager">

<tx:attributes>

<tx:method name="add*" propagation="REQUIRED" />

<tx:method name="delete*" propagation="REQUIRED" />

<tx:method name="modify*" propagation="REQUIRED" />

<!--hibernate4必须配置为开启事务 否则 getCurrentSession()获取不到-->

<tx:method name="*" propagation="REQUIRED" read-only="true" />

</tx:attributes>

</tx:advice>

以上都是我配置的时候出现问题的地方。下面是spring配置文件:

<?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-3.2.xsd

http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

<!-- 启用spring注解支持 -->

<context:annotation-config />

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

<property name="driverClassName" value="com.mysql.jdbc.Driver" />

<property name="url"

value="jdbc:mysql://127.0.0.1/bookstore?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="yangyang" />

</bean>

<!-- 可追加配置二级缓存 -->

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" >

<property name="dataSource" ref="dataSource"/>

<property name="mappingDirectoryLocations">

<list>

<value>classpath:config</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.hbm2ddl.auto">update</prop>

<prop key="hibernate.temp.use_jdbc_metadata_defaults">false</prop>

<prop key="current_session_context_class">thread</prop>

</props>

</property>

</bean>

<!-- 配置事务管理器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate4.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 事务的传播特性 -->

<tx:advice id="txadvice" transaction-manager="transactionManager">

<tx:attributes>

<tx:method name="add*" propagation="REQUIRED" />

<tx:method name="delete*" propagation="REQUIRED" />

<tx:method name="modify*" propagation="REQUIRED" />

<!--hibernate4必须配置为开启事务 否则 getCurrentSession()获取不到-->

<tx:method name="*" propagation="REQUIRED" read-only="true" />

</tx:attributes>

</tx:advice>

<!-- 那些类那些方法使用事务 -->

<aop:config>

<!-- 只对业务逻辑层实施事务 -->

<aop:pointcut id="allManagerMethod"

expression="execution(* com.book.test.*.*(..))" />

<aop:advisor pointcut-ref="allManagerMethod" advice-ref="txadvice" />

</aop:config>

<bean name="basedao" class="com.book.dao.impl.AdressDao" />

<bean name="orderdao" class="com.book.dao.impl.OrderDao" />

</beans>

一切就绪之后我们使用servlet测试:

<servlet>

<servlet-name>test</servlet-name>

<servlet-class>com.book.test.Test</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>test</servlet-name>

<url-pattern>/index</url-pattern>

</servlet-mapping>

   

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// TODO Auto-generated method stub

BeanFactory factor = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext());

OrderDao dao= factor.getBean(OrderDao.class);

Object[] list= dao.get(1).getOrderitems().toArray();

System.out.println(((Orderitem)list[0]).getOrdercount());

}

因为没有使用structs我们需要自己查找spring的BeanFactory来获得dao bean 这也是需要注意的地方,纠结好久。

运行结果:

 成功加载订单表订单1项目订购数量。

 毕竟第一次使用java开发这类项目,慢慢学习吧,希望大家可以喜欢JavaWeb搭建的网上图书商城框架,对大家的学习有所帮助。

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