三、數據服務(用RemoteObject與後臺交互)代碼編寫
這部分將完成FLEX與後臺JAVA代碼的通信(增刪改查),
首先在MyEclipse5.5 裏建立一個JAVA Web Project,項目名dataGridDemo,建立好工程之後,要想FLEX和JAVA通信,我們使用blazeds,下載blazeds-turnkey-4.0.0.14931.zip,解壓找到blazeds.war,然後再解壓,找到WEB-INF文件夾,用這個WEB-INF覆蓋JAVA web Project 的WEB-INF文件夾。
建立com.vo.Process.java
1)package com.vo;
public class Process {
private String id;
private String name;
private String gender;
private String email;
private String phone;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
2)com.test.ProcessInfo.java
package com.test;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import com.vo.Process;
public class ProcessInfo {
static Map map = new HashMap();
static { //靜態代碼塊模擬數據庫中的數據
Process emp = new Process();
emp.setId("22222");
emp.setName("aaaa");
emp.setGender("Fmale");
emp.setEmail("[email protected]");
emp.setPhone("7654321");
map.put(emp.getId(), emp);
emp = new Process();
emp.setId("222221");
emp.setName("aaaa1");
emp.setGender("Fmale1");
emp.setEmail("[email protected]");
emp.setPhone("76543211");
map.put(emp.getId(), emp);
}
public List<Process> query(Process empvo){ //查
List<Process> list = new ArrayList<Process>();
list.add((Process)map.get(empvo.getId()));
return list;
}
public void addProcess(Process empvo){ //增
map.put(empvo.getId(), empvo);
}
private void del(Process empvo){ //刪
map.remove(empvo.getId());
}
public List<Process> delProcess(Process empvo){ //刪
del(empvo);
return query(empvo);
}
}
3)修改工程中的 文件,增加destination節點
WebRoot/WEB-INF/flex/remoting-config.xml
<?xml version="1.0" encoding="UTF-8"?>
< service id="remoting-service"
class="flex.messaging.services.RemotingService">
<adapters>
<adapter-definition id="java-object" class="flex.messaging.services.remoting.adapters.JavaAdapter" default="true"/>
</adapters>
<default-channels>
<channel ref="my-amf"/>
</default-channels>
<destination id="ProcessInfoRemoting"> //重要
<properties>
<source>com.test.ProcessInfo</source>
</properties>
</destination>
<destination id="helloJavaFlex">
<properties>
<source>com.test.HelloJavaFlex</source>
</properties>
</destination>
< /service>
縱覽下最終的文件結構
四、啓動TOMCAT,並部署JAVA WEB項目
我的TOMCAT的配置如下:
點擊下面圖片上的那個部署小圖標,出現Project Deployments部署對話框,選擇要部署的工程和部署到的TOMCAT上,部署,Successfully deployed,OK
五、與JAVA通信FLEX部分的代碼
1)src/ui/dp/ro.mxml
<?xml version="1.0" encoding="utf-8"?>
< mx:Canvas xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:sf="http://www.spicefactory.org/parsley"
xmlns:mx="library://ns.adobe.com/flex/mx" width="100%" height="100%">
<fx:Script>
<![CDATA[
import model.*;
import model.vo.*;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.events.PropertyChangeEvent;
import mx.managers.PopUpManager;
import mx.rpc.AsyncToken;
import mx.rpc.events.ResultEvent;
[Bindable]
public var pDM:ProcessHandler = new ProcessHandler();//在ProcessHandler.as的類裏的構造函數裏聲明一個調用JAVA WEB 項目的遠程對象。
// public function queryProcess1():void{
// var nameText:String = nameInputText.text;
// var p:Process = new Process();
// p.id = nameText ;
// remoteQueryProcess.query(p);//另一種比較直觀的 調用JAVA WEB 項目的後臺方法。
// remoteQueryProcess.addEventListener(ResultEvent.RESULT,getRemoteMessage);//當後臺正確返回記錄的LIST智慧,調用的函數getRemoteMessage(),
// }
// private function getRemoteMessage(event:ResultEvent):void{
// dg.dataProvider= event.result;
//
// }
//
//
public function queryProcess():void{
var nameText:String = nameInputText.text;
var p:Process = new Process();
p.id = nameText ;
pDM.queryProcess(p);
}
public function addProcess():void{
var mywindow:Object ;
mywindow=PopUpManager.createPopUp(this,AddPopupWindow,false);//彈出增加窗口
}
public function updateProcess():void{
var mywindow:Object ;
var p:Process = new Process();
p.id = dg.selectedItem.id ;
p.name = dg.selectedItem.name;
p.gender = dg.selectedItem.gender;
p.email = dg.selectedItem.email;
p.phone = dg.selectedItem.phone;
var updateWin:AddPopupWindow = new AddPopupWindow();//聲明一個彈出窗口
updateWin.p = p;//把選中表格中的記錄的值初始化到修改窗口中的文本框中
PopUpManager.addPopUp(updateWin, this, true);
PopUpManager.centerPopUp(updateWin); //居中彈出一個修改窗口
// mywindow=PopUpManager.createPopUp(this,AddPopupWindow,false);
}
public function delProcess():void{
var p:Process = new Process();
p.id = dg.selectedItem.id ;
pDM.delProcess(p); //根據ID從後臺刪除記錄
}
]]>
</fx:Script>
<fx:Declarations>
<!-- 將非可視元素(例如服務、值對象)放在此處 -->
<mx:RemoteObject destination="ProcessInfoRemoting" id="remoteQueryProcess" endpoint="/dataGridDemo/messagebroker/amf">
</mx:RemoteObject> <!--另一種比較直觀的與JAVA後臺通信的聲明,聲明一個RemoteObject,destination和JAVA WEB project中的Remoting-Config.xml裏的destination節點一致-->
</fx:Declarations>
< mx:Panel title="數據服務" width="100%" height="100%">
<mx:VBox>
<mx:HBox>
<s:Label x="144" y="104" text="查詢流程:" width="47"/>
<s:TextInput x="218" y="99" id="nameInputText"/>
<mx:Button x="203" y="143" label="queryBtn" click="queryProcess();"/>
<mx:Button label="增加" click="addProcess()"/>
<mx:Button label="刪除" click="delProcess()"/>
<mx:Button label="修改" click="updateProcess()"/>
</mx:HBox>
<mx:DataGrid y="156" width="674" height="300" horizontalCenter="0" id="dg" dataProvider="{pDM.processArr}">
<mx:columns>
<mx:DataGridColumn headerText="ID" dataField="id"/>
<mx:DataGridColumn headerText="Name" dataField="name"/>
<mx:DataGridColumn headerText="Gender" dataField="gender"/>
<mx:DataGridColumn headerText="Email" dataField="email"/>
<mx:DataGridColumn headerText="Phone Number" dataField="phone"/>
</mx:columns>
</mx:DataGrid>
</mx:VBox>
< /mx:Panel>
< /mx:Canvas>
2)src/ui/dp/AddPopupWindow.mxml 彈出窗口
<?xml version="1.0" encoding="utf-8"?>
< s:TitleWindow xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300" close="closeMe()" creationComplete="init()" >
<fx:Declarations>
<!-- 將非可視元素(例如服務、值對象)放在此處 -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import model.*;
import model.vo.*;
import mx.managers.PopUpManager;
private function closeMe():void{
PopUpManager.removePopUp(this);
}
public var pDM:ProcessHandler = new ProcessHandler();
public var p:Process;
public function init():void{
id1.text =p.id;
name1.text = p.name;
gender1.text = p.gender;
email1.text = p.email;
phone1.text = p.phone;
}
private function addRecord():void{
var pvo:Process = new Process();
pvo.id = id1.text;
pvo.name = name1.text;
pvo.gender = gender1.text;
pvo.email = email1.text;
pvo.phone = phone1.text;
pDM.addProcess(pvo);
closeMe();
}
private function updateRecord():void{
var pvo:Process = new Process();
pvo.id = id1.text;
pvo.name = name1.text;
pvo.gender = gender1.text;
pvo.email = email1.text;
pvo.phone = phone1.text;
pDM.addProcess(pvo);
closeMe();
}
]]>
</fx:Script>
<mx:VBox x="50" y="50">
<mx:Grid>
<mx:GridRow>
<mx:GridItem colSpan="2" horizontalAlign="right">
<mx:Button label="確定" click="addRecord()"/>
<mx:Button label="取消" click="closeMe()"/>
</mx:GridItem>
</mx:GridRow>
<mx:GridRow>
<mx:GridItem>
<mx:Label text="ID"/>
</mx:GridItem>
<mx:GridItem>
<mx:TextInput id="id1" width="200"/>
</mx:GridItem>
</mx:GridRow>
<mx:GridRow>
<mx:GridItem>
<mx:Label text="name"/>
</mx:GridItem>
<mx:GridItem>
<mx:TextInput id="name1" width="200"/>
</mx:GridItem>
</mx:GridRow>
<mx:GridRow>
<mx:GridItem>
<mx:Label text="Gender"/>
</mx:GridItem>
<mx:GridItem>
<mx:TextInput id="gender1" width="200"/>
</mx:GridItem>
</mx:GridRow>
<mx:GridRow>
<mx:GridItem>
<mx:Label text="Email"/>
</mx:GridItem>
<mx:GridItem>
<mx:TextInput id="email1" width="200"/>
</mx:GridItem>
</mx:GridRow>
<mx:GridRow>
<mx:GridItem>
<mx:Label text="Phone Number"/>
</mx:GridItem>
<mx:GridItem>
<mx:TextInput id="phone1" width="200"/>
</mx:GridItem>
</mx:GridRow>
</mx:Grid>
</mx:VBox>
< /s:TitleWindow>
2)src/model/vo/Process.as ,這個AS文件的字段和JAVA工程中的VO的字段一一對應。
package model.vo
{
[RemoteClass(alias="com.vo.Process")] //com.vo.Process是對應的後臺JAVA代碼的VO
public class Process
{
public var id:String;
public var name:String;
public var gender:String;
public var email:String;
public var phone:String;
}
}
3) src/model/ProcessHandle.as
package model
{
import model.util.Constants;
import model.vo.Process;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.events.PropertyChangeEvent;
import mx.rpc.AsyncToken;
import mx.rpc.events.FaultEvent;
import mx.rpc.remoting.RemoteObject;
public class ProcessHandler
{
[Bindable]
public var processArr:ArrayCollection ;//設processArr爲綁定變量,前臺ro.mxml的DataGrid數據來源與這個綁定變量的值。
public var pro:RemoteObject;
public function ProcessHandler() //在構造函數裏聲明一個遠程對象RemoteObject.然後其他地方就可以使用它了。
{
pro = new RemoteObject();
// pro.addEventListener(FaultEvent.FAULT,showInfo());
pro.destination=Constants.DESCINATION;
pro.endpoint=Constants.ENDPOINT;
}
public function addProcess(pvo:Process ):void{
pro.addProcess(pvo);
}
public function queryProcess(pvo:Process ):void{
var token:AsyncToken=pro.query(pvo);
token.addEventListener(PropertyChangeEvent.PROPERTY_CHANGE,
function(event:PropertyChangeEvent):void{
processArr = ArrayCollection(AsyncToken(event.target).result); //查詢之後,將返回的LIST賦值給processArr,然後反映到ro.mxml的DataGrid控件上。
}
);
}
public function delProcess(pvo:Process ):void{
var token:AsyncToken=pro.delProcess(pvo);
token.addEventListener(PropertyChangeEvent.PROPERTY_CHANGE,
function(event:PropertyChangeEvent):void{
processArr = ArrayCollection(AsyncToken(event.target).result); //刪除之後,重新將返回結果的LIST返回給這個變量,刷新ro.mxml的DataGrid的數據來源。
}
);
}
}
}
4)src/model/util/Constants.as
package model.util
{
public class Constants
{
public static const DESCINATION ="ProcessInfoRemoting";
public static const ENDPOINT="/dataGridDemo/messagebroker/amf";
public function Constants()
{
}
}
}
六、FLEX工程關聯到JAVA項目的配置
右擊FLEX項目FlexDemo3,彈出屬性窗口,選擇Flex服務器,然後配置應用程序服務器類型爲J2EE,
並選擇BlazeDS,服務器位置選擇D:\apache-tomcat-6.0.35\webapps\dataGridDemo,跟URL爲:http://localhost:8080/dataGridDemo
,上下文根目錄爲:/dataGridDemo,然後點驗證配置按鈕。不出錯就OK。
然後點確定按鈕關閉窗口。
配置如下圖:
以上配置好之後,選擇我們建的FlexDemo3的工程,然後點綠色的運行按鈕,就彈出了主頁面main.mxml。測試吧。
相關工程代碼請下載 http://download.csdn.net/detail/iamyzs/4284826