Flex的一点入门经验(1)--和BlazeDs的通信

最近公司项目要用到flex,所以进行了一段时间的学习.记录下从零开始的全过程.

安装了tomcat7在D:\work\tomcat-7.0.39,下载了blazeds的二进制版本.我下载的是Nightly Builds,因为Release Builds下载会报错.
解压blazeds-bin-4.0.1.18170.zip,得到了两个文件blazeds.war和blazeds-spring.war,将
blazeds.war copy到D:\work\tomcat-7.0.39\webapps,解压后改名为student
在eclipse里新建一个java工程barServer,用链接的方式把D:\work\tomcat-7.0.39\webapps\student文件夹链接到工程里,更改输出路径,把class文件生成到D:\work\tomcat-7.0.39\webapps\student\WEB-INF\classes里.
在barServer工程里建立了个简单的实体类Student,只有id和name两个属性,建立StudentDao在static的List中对Student增删查改,建立了个StudentService类作为remoteObject

package com.crap.service;

import java.util.List;

import com.crap.dao.StudentDao;
import com.crap.model.Student;

public class StudentService {

	private StudentDao studentDao = new StudentDao();

	public void createStudent(Student s) {
		studentDao.createStudent(s);
	}

	public void deleteStudentById(Integer id) {
		studentDao.deleteStudentById(id);
	}

	public Student getStudentById(Integer id) {
		return studentDao.getStudentById(id);
	}

	public void updateStudent(Student newOne) {
		studentDao.updateStudent(newOne);
	}

	public List<Student> findStudentList() {
		return this.studentDao.findStudentList();
	}

}

在D:\work\tomcat-7.0.39\webapps\student\WEB-INF\flex里的remoting-config.xml文件里添加

<destination id="student">
		<properties>
			<source>com.crap.service.StudentService</source>
		</properties>
	</destination>

就已经搭建好server环境了


现在开始弄flex client端.Flex Builder新建一个flex工程,记得flex服务器那页要选对


在mxml中代码如下

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
			   xmlns:s="library://ns.adobe.com/flex/spark"
			   xmlns:mx="library://ns.adobe.com/flex/mx"
			   minWidth="955" minHeight="600">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
		<s:RemoteObject id="studentRO" destination="student">
			<s:method name="findStudentList" result="studentList=event.result as ArrayCollection"/>
		</s:RemoteObject>
		
	</fx:Declarations>
	
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			[Bindable]
			private var studentList:ArrayCollection;
		]]>
	</fx:Script>
	
	
	<s:VGroup >
			<s:Button label="刷新" click="studentRO.findStudentList()"/>
		
		<s:DataGrid id="studentDG" width="100%" dataProvider="{studentList}">
			<s:columns>
				<s:ArrayList>
					<s:GridColumn dataField="id" headerText="ID"/>
					<s:GridColumn dataField="name" headerText="姓名"/>
				</s:ArrayList>
			</s:columns>
		</s:DataGrid>
	</s:VGroup>
	

	
	
</s:Application>

RemoteObject的destination要和remoting-config.xml里的保持一致.
效果如图