以前一直接觸.net相關(guān)的web開發(fā)，現(xiàn)在猛然使用javaWeb還是很不習(xí)慣，就連搭個(gè)框架也是第一次。
一、談?wù)勴?xiàng)目架構(gòu)
一開始接觸.net相關(guān)的開發(fā)所以對(duì)于.net相關(guān)的開發(fā)還是比較熟悉的，但我在學(xué)校學(xué)的java方向的開發(fā)，而我打算把這兩種平臺(tái)結(jié)合起來，使用java做后臺(tái)也就是服務(wù)提供者，將所有業(yè)務(wù)邏輯在java平臺(tái)完成并使用我比較熟悉的.net做Web端的開發(fā)。這樣一來安卓app，web端就都有了。客戶端統(tǒng)一通過分布式框架調(diào)用服務(wù)。找了很久最終選擇了Hprose，這一輕量級(jí)、跨語言、跨平臺(tái)、無侵入式、高性能動(dòng)態(tài)遠(yuǎn)程對(duì)象調(diào)用引擎庫。之所以選擇它一方面是因?yàn)閷W(xué)習(xí)成本低，另一方面是它的跨平臺(tái)調(diào)用非常輕松高效，因?yàn)槲覀円褂?net做web需要調(diào)用java發(fā)布的服務(wù)！大概看了一下Hprose的文檔，發(fā)現(xiàn)使用內(nèi)置的HproseServlet發(fā)布服務(wù)開發(fā)速度比較快也比較簡(jiǎn)單，所以準(zhǔn)備使用這種方式發(fā)布服務(wù)。可問題來了，傳統(tǒng)的ssh架構(gòu)感覺有點(diǎn)重了，準(zhǔn)備使用.net開發(fā)web端所以感覺沒有必要整合Struts，于是就是hibernate+spring+hprose這種架構(gòu)。
二、數(shù)據(jù)庫設(shè)計(jì)
一個(gè)小網(wǎng)上書城，所以設(shè)計(jì)的還有欠缺，以實(shí)用為主，主要是練手java開發(fā)~~。所以使用了navicat簡(jiǎn)單設(shè)計(jì)了一下，不過沒有設(shè)計(jì)表關(guān)聯(lián)，取而代之的是后來一個(gè)一個(gè)添加關(guān)系的，發(fā)現(xiàn)這個(gè)設(shè)計(jì)工具有點(diǎn)問題，圖示：
其實(shí)表關(guān)聯(lián)一看就能看出來~~，接下來就是hibernate一些映射了，同樣也是使用插件生成model和映射文件
稍作修改就是這樣--
三、spring3+hibernate4配置
因?yàn)閙odel和映射文件是自動(dòng)生成所以稍加配置就好，需要注意的是復(fù)合主鍵的設(shè)置，自動(dòng)生成的會(huì)把復(fù)合主鍵對(duì)應(yīng)一個(gè)復(fù)合模型。如商品評(píng)論表的復(fù)合主鍵類型：
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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; }} |
商品評(píng)論表模型：
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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; } } |
相應(yīng)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?yàn)樯唐吩u(píng)論表有兩個(gè)是外鍵所以使用了key-many-to-one標(biāo)簽。
由于采用spring3.2+hibernate4.1所以得到sessionFactory的方式只限于sessionFactory.getCurrentSession();但是必須開啟事物：
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<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 事務(wù)的傳播特性 --> <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必須配置為開啟事務(wù) 否則 getCurrentSession()獲取不到--> <tx:method name="*" propagation="REQUIRED" read-only="true" /> </tx:attributes> </tx:advice> |
以上都是我配置的時(shí)候出現(xiàn)問題的地方。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"> <!-- 啟用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> <!-- 可追加配置二級(jí)緩存 --> <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> <!-- 配置事務(wù)管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 事務(wù)的傳播特性 --> <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必須配置為開啟事務(wù) 否則 getCurrentSession()獲取不到--> <tx:method name="*" propagation="REQUIRED" read-only="true" /> </tx:attributes> </tx:advice> <!-- 那些類那些方法使用事務(wù) --> <aop:config> <!-- 只對(duì)業(yè)務(wù)邏輯層實(shí)施事務(wù) --> <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> |
一切就緒之后我們使用servlet測(cè)試：
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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?yàn)闆]有使用structs我們需要自己查找spring的BeanFactory來獲得dao bean 這也是需要注意的地方，糾結(jié)好久。
運(yùn)行結(jié)果：
成功加載訂單表訂單1項(xiàng)目訂購數(shù)量。
畢竟第一次使用java開發(fā)這類項(xiàng)目，慢慢學(xué)習(xí)吧，希望大家可以喜歡JavaWeb搭建的網(wǎng)上圖書商城框架，對(duì)大家的學(xué)習(xí)有所幫助。
