有很COOL的界面了,而且flex总的来说基本东西不难学,有编程基础的人很快掌握,当然要精通就要时间了,因为库,API等很多.
下面就flex3+blazeds+spring+hibernate整合作个小结,是之前读外国好文的心得,而见国内这方面的文比较少,因此笔记之.
首先要知道,flex3是做前端的,其实就是view层的东西了,可以替换掉struts 2,如果项目中你喜欢的话.而blazeds是
adobe免费的转换网关(可以理解成转换网关),负责把后端的数据与actionscript进行转换,当然也可以用
收费的那个livecycle data services了.而spring+hiberate的组合很传统了.
1 准备好东西
A 下载blazeds,这里下载blazeds_turnkey_3-0-0-544的版本,因为自带了tomcat还有些好的例子
B FLEXBUILDER 3
C MYSQL 5
D SPRING+HIBERNATE,myeclipse,这些就不说了.
2 本文是根据http://www.adobe.com/cfusion/communityengine/index.cfm?event=showdetails&productId=2&postId=7923
去小结的.其中在http://www.adobe.com/devnet/livecycle/articles/blazeds_spring.html中,讨论了如何跟spring结合,如何跟
hsqldb结合.那么文中是举了blazeds自带的例子来做说明的,在它的基础上进行修改,变成hibernate+spring.
3 先从http://download.macromedia.com/pub/developer/flex_spring.zip下载例子文件,其中包括了例子和作者写的
用spring调用的组件.
解压flex-spring.zip
将/flex-spring/factory/bin/flex/samples/factories 目录下的class文件拷贝到/WEB-INF/classes/flex/samples/factories目录中
4 在/WEB-INF/flex/services-config.xml文件中注册spring factory
<factories>
<factory id="spring" class="flex.samples.factories.SpringFactory"/>
</factories>
5 配置web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener </listener-class>
</listener>
6 在下载的程序中,我们重点关注samples\store这个目录下的程序.
其中flex目录是写好了的flex界面了,大家可以用flexbuilder去看.
而java目录其实就是后端的目录.无非就是用spring来实现对product对象的增,删改.
7 我们先用mysql 5在建立数据库 flexhibernate,表结构如下:
CREATE TABLE `product` (
`productId` int(11) NOT NULL auto_increment,
`name` varchar(40) NOT NULL,
`category` varchar(40) NOT NULL,
`image` varchar(255) NOT NULL,
`price` double NOT NULL,
`description` varchar(255) NOT NULL,
`qtyInStock` int(20) NOT NULL,
KEY `productId` (`productId`)
)
8 ,我们编写一个product.hbm.xml如下,放在samples\store\java目录下
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"[]>
<hibernate-mapping package="flex.samples.spring.store">
<class name="Product" table="PRODUCT">
<id name="productId" type="long" column="PRODUCTID"
unsaved-value="0">
<generator class="identity" />
</id>
<property name="name" column="NAME" length="40" />
<property name="category" column="CATEGORY" length="40" />
<property name="image" column="IMAGE" length="40" />
<property name="price" column="PRICE" type="double" />
<property name="description" column="DESCRIPTION" length="255" />
<property name="qtyInStock" column="QTYINSTOCK"
type="integer" />
</class>
</hibernate-mapping>
9 编写applicationContext.xml,注意要放在blazeds_turnkey_3-0-0-544\tomcat\webapps\blazeds\WEB-INF下
内容如下
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<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://localhost:3306/flexhibernate" />
<property name="username" value="root" />
<property name="password" value="abc" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="mappingResources">
<list>
<value>flex/samples/spring/store/Product.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.HSQLDialect
</prop>
</props>
</property>
<property name="dataSource">
<ref bean="dataSource" />
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean>
<bean id="productDAOBeanTarget"
class="flex.samples.spring.store.HibernateProductDAO">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="productDAOBean"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager" ref="txManager" />
<property name="target" ref="productDAOBeanTarget" />
<property name="transactionAttributes">
<props>
<prop key="create*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
</beans>
很典型的传统spring+hibernate的配置了.
10 修改blazeds_turnkey_3-0-0-544\tomcat\webapps\blazeds\WEB-INF\flex目录下的
remoting-config.xml文件,增加如下部分:
<destination id="productService">
<properties>
<factory>spring</factory>
<source>productDAOBean</source>
</properties>
</destination>
11 准备spring,hibernate,mysqljdbc等驱动包,可以先放在blazeds_turnkey_3-0-0-544\tomcat\webapps\blazeds\WEB-INF\lib下,
当然也可以通过下面写ANT文件去指定,道理都是一样的.注意我用的是spring 1.2.8的包,2.0X的还没试过,各位可以试下.
12 可以看到,原文作者在sample\store目录下,有个build.xml,但其中因为我是windows下的,所以修改了路径符号为\,
如下
<?xml version="1.0" encoding="utf-8"?>
<project name="Store Application" basedir="." default="main">
<property name="FLEX_HOME" value="C:\Program Files\Adobe\Flex Builder 3\sdks\3.1.0"/>
<property name="DEPLOY_DIR" value="L:\blazeds_turnkey_3-0-0-544\tomcat\webapps\blazeds"/>
<property name="CONTEXT_ROOT" value="blazeds"/>
<property name="lib.dir" value="L:\blazeds_turnkey_3-0-0-544\tomcat\webapps\blazeds\WEB-INF\lib"/>
<path id="classpath">
<fileset dir="${lib.dir}">
<include name="*.jar"/>
</fileset>
</path>
<taskdef resource="flexTasks.tasks" classpath="${FLEX_HOME}\ant\flexTasks.jar" />
<target name="main" depends="compile-flex,html-wrapper,compile-java"/>
<target name="compile-flex">
<mxmlc file="flex/storeadmin.mxml"
services="${DEPLOY_DIR}\WEB-INF\flex\services-config.xml"
context-root="${CONTEXT_ROOT}"
output="${DEPLOY_DIR}\storeadmin\storeadmin.swf"/>
<mxmlc file="flex/store.mxml"
services="${DEPLOY_DIR}/WEB-INF\flex\services-config.xml"
context-root="${CONTEXT_ROOT}"
output="${DEPLOY_DIR}\store\store.swf"/>
<copy todir="${DEPLOY_DIR}\store\pic">
<fileset dir="flex\pic"/>
</copy>
</target>
<target name="compile-java">
<javac srcdir="java" destdir="${DEPLOY_DIR}\WEB-INF\classes">
<classpath refid="classpath"/>
</javac>
<copy todir="${DEPLOY_DIR}/WEB-INF/classes/flex/samples/spring/store">
<fileset dir="java" includes="**/*hbm.xml"/>
</copy>
</target>
<target name="html-wrapper">
<html-wrapper
application="app"
width="100%"
height="100%"
swf="storeadmin"
version-major="9"
version-minor="0"
version-revision="0"
history="true"
template="express-installation"
output="${DEPLOY_DIR}\storeadmin"/>
<html-wrapper
application="app"
width="100%"
height="100%"
swf="store"
version-major="9"
version-minor="0"
version-revision="0"
history="true"
template="express-installation"
output="${DEPLOY_DIR}\store"/>
</target>
</project>
要注意的是,因为flex 3的ant扩展了ant,因此,要保证Adobe\Flex Builder 3\sdks\3.1.0\ant下有文件flexTasks.jar,
也要把flexTasks.jar COPY到ant的目录下去.
之后就可以在sample\store根目录下,运行ant打包运行了.
13 之后启动tomcat,运行
http://localhost:8400/blazeds/store/index.html
和 http://localhost:8400/blazeds/storeadmin/index.html,
就可以看到效果了.
14 简单分析其调用过程
把其中一个flex文件打开,比如
<Product id="product"
name="{productName.text}"
category="{category.text}"
price="{Number(price.text)}"
qtyInStock="{int(qtyInStock.text)}"
image="{image.text}"
description="{description.text}"/>
<mx:RemoteObject id="srv" destination="productService"/>
<mx:Form width="100%">
<mx:FormItem label="Name">
<mx:TextInput id="productName" text="{product.name}"/>
</mx:FormItem>
<mx:FormItem label="Category">
<mx:TextInput id="category" text="{product.category}"/>
</mx:FormItem>
<mx:FormItem label="Image">
<mx:TextInput id="image" text="{product.image}"/>
</mx:FormItem>
<mx:FormItem label="Price">
<mx:TextInput id="price" text="{product.price}"/>
</mx:FormItem>
<mx:FormItem label="In Stock">
<mx:TextInput id="qtyInStock" text="{product.qtyInStock}"/>
</mx:FormItem>
<mx:FormItem label="Description" width="100%">
<mx:TextArea id="description" text="{product.description}" width="100%" height="100"/>
</mx:FormItem>
</mx:Form>
<mx:ControlBar>
<mx:Button label="Update" click="srv.updateProduct(product)"/>
</mx:ControlBar>
其中,关注<mx:Button label="Update" click="srv.updateProduct(product)"/>,这里,就是调用srv的updateProduct(product)了,
其中,srv是一个 <mx:RemoteObject id="srv" destination="productService"/>,destination="productService"是什么?
就是第10步中指定的那个productService了,呵呵,应该大致明白了吧?