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：
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package com.book.model;// Generated 2015-11-2 9:07:06 by Hibernate Tools 4.0.0.Finalimport 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：
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package com.book.model;// Generated 2015-10-30 14:56:21 by Hibernate Tools 4.0.0.Finalimport 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：
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<?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：
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<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：
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<?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：
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<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> |
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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。
