Flex + Hessian 学习笔记(二)

发布时间：2020-12-15 04:29:01 所属栏目：百科来源：网络整理

导读：这个例子是，输入一个用户信息，并保存到服务端。第一个目的是实验一下传送对象；再一个目的是感觉Hessian例子里的用法不太舒服，又要实现mx.rpc.IResponder，又要处理AsyncToken，还要send，所以把这些封装了一下，由BaseService实现mx.rpc.IResponder，

这个例子是，输入一个用户信息，并保存到服务端。
第一个目的是实验一下传送对象；
再一个目的是感觉Hessian例子里的用法不太舒服，又要实现mx.rpc.IResponder，又要处理AsyncToken，还要send，所以把这些封装了一下，由BaseService实现mx.rpc.IResponder，由UserService类开放服务接口(既提供java端UserService的方法)，这样其它类就可以像使用普通对象一样使用UserService类。

java 代码

 
   public?class?UserBean?implements?Serializable?{ ??
 ??
 ????private?Integer?userId; ??
 ???? ??
private?String?userName; ??
private?String?password; ??
private?String?companyName; ??
 ????getter?setter?... ??
 }??


   java 代码 
 
 
   interface?UserService?{ ??
 
     ??
public?String?getUserName(Integer?userId); ??
 ???? ??
public?List<UserBean>?saveUser(UserBean?userBean); ??
 }??


    java 代码 
  
 
    class?UserServiceImpl?extends?HessianServlet?implements?UserService?{ ??
 
      ??
private?static?List<UserBean>?userDataSource?=?new?ArrayList<UserBean>(); ??
 ???? ??
public?String?getUserName(Integer?userId)?{ ??
 ????????return?"MyName"?+?userId; ??
 ????} ??
public?List<UserBean>?saveUser(UserBean?userBean)?{ ??
 ????????userBean.setUserId(userDataSource.size()?+?1); ??
 ????????userDataSource.add(userBean); ??
return?userDataSource; ??
 }??


     xml 代码 
   
 
     <servlet>?? ????<servlet-name>userService</servlet-name>??
 ????<servlet-class>myhessian.service.UserServiceImpl</servlet-class>??
 </servlet>??
 ??
 <servlet-mapping>??
 ????<servlet-name>userService</servlet-name>??
 ????<url-pattern>/userService</url-pattern>??
 </servlet-mapping>??

 以上是服务端的java代码，下面是flex的代码

      as3 代码 
    
 
      class?UserBean?{ ??
 
        ???? ??
public?var?userId?:?int; ??
public?var?userName?:?String; ??
public?var?password?:?String; ??
public?var?companyName?:?String; ??
 }??


       as3 代码 
     
 
       class?BaseService?implements?IResponder?{ ??
 
         ???? ??
protected?var?resultCallbackFunction?:?Function; ??
protected?var?faultCallbackFunction?:?Function; ??
public?function?BaseService(resultCallback:Function=null,?faultCallback:Function=null)?{ ??
if?(resultCallback?==?null)?{ ??
 ????????????resultCallbackFunction?=?defaultFunction; ??
 ????????}?else?{ ??
 ????????????resultCallbackFunction?=?resultCallback; ??
 ????????} ??
if?(faultCallback?==? ????????????faultCallbackFunction?=?defaultFunction; ??
else?{ ??
 ????????????faultCallbackFunction?=?faultCallback; ??
 ????????} ??
 ????} ??
 ???? ??
public?function?result(data:Object):void?{ ??
 ????????var?event:ResultEvent?=?data?as?ResultEvent; ??
 ????????resultCallbackFunction(event.result); ??
 ????} ??
public?function?fault(data:Object):void?{ ??
 ????????var?event:ResultEvent?=?data?as?ResultEvent; ??
 ????????faultCallbackFunction(event.result); ??
public?function?defaultFunction(data:Object): }??


        as3 代码 
      
 
        class?UserService?extends?BaseService?{ ??
 
          ???? ??
static?var?_userService?:?HessianService; ??
protected?static?function?getUserService():HessianService?{ ??
if?(!_userService)?{ ??
 ????????????_userService?=?new?HessianService("userService"); ??
 ????????} ??
return?_userService; ??
 ????} ??
 ???? ??
public?function?UserService(resultCallback:Function=null)?{ ??
super(resultCallback,?faultCallback); ??
public?function?getUserName(userId:int):void?{ ??
 ????????var?token:AsyncToken?=?getUserService().getUserName.send(userId); ??
 ????????token.addResponder(this); ??
 ????} ??
public?function?saveUser(user?:?UserBean):void?{ ??
 ????????var?token:AsyncToken?=?getUserService().saveUser.send(user); ??
this); ??
 }??


         xml 代码 
       
 
         <mx:Application? ?? ????xmlns:mx="http://www.adobe.com/2006/mxml"? ??
 ????layout="absolute"?>??
 ??
 ????<mx:Script>??
 ????????[CDATA[??
 ????????????import?hessian.service.UserService;??
 ????????????import?hessian.bean.UserBean;??
 ??????????????
 ????????????public?function?refreshUserDataGrid(data:Object):void?{??
 ????????????????//只能as?Array，不能as?ArrayCollection??
 ????????????????userDataGrid.dataProvider?=?data?as?Array;??
 ????????????}??
 ??????????????
 ????????????public?function?onClick():void?{??
 ????????????????var?user?:?UserBean?=?new?UserBean();??
 ????????????????user.userName?=?nameInput.text;??
 ????????????????user.password?=?passwordInput.text;??
 ????????????????user.companyName?=?companyInput.text;??
 ??????????????????
 ????????????????var?userService?:?UserService?=?new?UserService(refreshUserDataGrid);??
 ????????????????userService.saveUser(user);??
 ????????]]??
 ????</mx:Script>??
 ????<mx:Label?x="10"?y="10"?text="Name"?width="59"/>??
 ????<mx:TextInput?x="77"?y="8"?id="nameInput"/>??
 ????<mx:Label?x="10"?y="36"?text="Password"/>??
 ????<mx:Label?x="10"?y="62"?text="Company"/>??
 ????<mx:TextInput?x="77"?y="34"?id="passwordInput"/>??
 ????<mx:TextInput?x="77"?y="60"?id="companyInput"/>??
 ????<mx:Button?x="77"?y="90"?label="Button"?click="onClick()"/>??
 ????<mx:DataGrid?x="10"?y="120"?width="271"?id="userDataGrid">??
 ????????<mx:columns>??
 ????????????<mx:DataGridColumn?headerText="ID"?dataField="userId"/>??
 ????????????<mx:DataGridColumn?headerText="Name"?dataField="userName"/>??
 ????????????<mx:DataGridColumn?headerText="Company"?dataField="companyName"/>??
 ????????</mx:columns>??
 ????</mx:DataGrid>??
 ???? ??
 </mx:Application>??

（编辑：李大同）

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