【个人笔记】基于AMF-RPC实现Flex与JAVA的交互实例【上】

（此为本人学习笔记，原创）

说明：此例为flex通过免费的Java EE 服务器端组件-BlazeDS连接到java，并利用java与MySQL交互返回一个ArrayList类集，并再返回到Flex端进行解析。本例代码中省略了大量注释。

1.MyEclipse中新建一个WEB工程“FlexDao”，新建包com.sxy.demo 和2个类。
（注意：）
     1.  StudentDao类中一定要有Setter&Getter方法！！！（不管用不用得到）

          没有的话，Flex端是绝对无法正常解析的。（很奇怪）

     2.  StudentDao类不一定要implements Serializable。
 

package com.sxy.demo;public class StudentDao {private int stu_id;private String stu_name;private String stu_sex;private int stu_age;private String stu_class;private String stu_major;private  String stu_department;private String stu_type;public StudentDao(int stu_id, String stu_name, String stu_sex, int stu_age,String stu_class, String stu_major, String stu_department,String stu_type) {super();this.stu_id = stu_id;this.stu_name = stu_name;this.stu_sex = stu_sex;this.stu_age = stu_age;this.stu_class = stu_class;this.stu_major = stu_major;this.stu_department = stu_department;this.stu_type = stu_type;}public int getStu_id() {return stu_id;}public void setStu_id(int stu_id) {this.stu_id = stu_id;}public String getStu_name() {return stu_name;}public void setStu_name(String stu_name) {this.stu_name = stu_name;}public String getStu_sex() {return stu_sex;}public void setStu_sex(String stu_sex) {this.stu_sex = stu_sex;}public int getStu_age() {return stu_age;}public void setStu_age(int stu_age) {this.stu_age = stu_age;}public String getStu_class() {return stu_class;}public void setStu_class(String stu_class) {this.stu_class = stu_class;}public String getStu_major() {return stu_major;}public void setStu_major(String stu_major) {this.stu_major = stu_major;}public String getStu_department() {return stu_department;}public void setStu_department(String stu_department) {this.stu_department = stu_department;}public String getStu_type() {return stu_type;}public void setStu_type(String stu_type) {this.stu_type = stu_type;}}

package com.sxy.demo;import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.Statement;import java.util.ArrayList;import java.util.List;public class Student {public static final String DBDRIVER = "com.mysql.jdbc.Driver" ;public static final String DBURL = "jdbc:mysql://localhost:3306/sxy" ;public static final String DBUSER = "root" ;public static final String DBPASS = "123" ;public static Connection getConnection(){           Connection conn=null;           try{                  Class.forName(DBDRIVER);               conn=DriverManager.getConnection(DBURL,DBUSER,DBPASS);           }catch(Exception e){               System.err.println(e.getMessage());           }           return conn;       }   public List<StudentDao> getInfo(String key){List<StudentDao> list = new ArrayList<StudentDao>();  PreparedStatement stat = null;Connection conn=getConnection();try{ Statement stmt = conn.createStatement();          stat=conn.prepareStatement("select * from STUDENT where STU_ID  LIKE ?");            stat.setString(1, "%"+key+"%");            ResultSet rs=stat.executeQuery();while( rs.next()) { list.add(new StudentDao( Integer.parseInt(rs.getString("STU_ID")),rs.getString("STU_NAME"),rs.getString("STU_SEX"),Integer.parseInt(rs.getString("STU_AGE")),rs.getString("STU_CLASS"),rs.getString("STU_MAJOR"),rs.getString("STU_DEPARTMENT"),rs.getString("STU_TYPE"))); } rs.close();         stmt.close(); conn.close(); }catch(Exception e){ }return list;}}

2.解压缩blazeds.war文件，将解压后的WEB-INF目录覆盖WEB工程FlexDao的WebRoot目录下，并在WebRoot\WEB-INF\flex\remoting-config.xml中定义一个远程服务。

3.将该工程部署到Tomcat服务器目录中，并启动。

4.新建Flex项目-FlexDao

5.编写FlexDao.mxml文件

<?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" xmlns:reflect="flex.lang.reflect.*"><fx:Declarations><mx:RemoteObject id="sxy" destination="Student" result="resultHandler(event)" endpoint="/FlexDao/messagebroker/amf"/></fx:Declarations><fx:Script>        <![CDATA[ import mx.collections.ArrayCollection;import mx.controls.Alert;import mx.rpc.events.FaultEvent;import mx.rpc.events.ResultEvent;  [Bindable]public var arr:ArrayCollection = new ArrayCollection();private function hello():void {      sxy.getInfo(t1.text);}private function resultHandler(event:ResultEvent):void {                     arr = ArrayCollection(event.result)} ]]>    </fx:Script>           <s:Panel width="1060" height="422"   title="学生信息查询" x="144.55" y="123"><s:VGroup x="22" y="14" width="102" height="73" >  <s:TextInput id="t1" width="98" height="35"/><s:Button label="查询" id="Button" click="hello()" width="55" height="26"/></s:VGroup>  <mx:DataGrid x="139" y="14" width="900" height="344" dataProvider="{arr}" id="datagrid"  showDataTips="true" verticalAlign="middle" ><mx:columns><mx:DataGridColumn headerText="学号" dataField="stu_id"  resizable="true"/><mx:DataGridColumn headerText="姓名" dataField="stu_name"  resizable="true"/><mx:DataGridColumn headerText="性别" dataField="stu_sex"  resizable="true"/><mx:DataGridColumn headerText="年龄" dataField="stu_age"  resizable="true"/><mx:DataGridColumn headerText="班级" dataField="stu_class"  resizable="true"/><mx:DataGridColumn headerText="专业" dataField="stu_major"  resizable="true"/><mx:DataGridColumn headerText="院系" dataField="stu_department"  resizable="true"/><mx:DataGridColumn headerText="类型" dataField="stu_type"  resizable="true"/></mx:columns></mx:DataGrid></s:Panel></s:Application>

6.编译&运行