MACROMEDIA FLASH REMOTING MX-USING FLASH REMOTING FOR FLASH MX 2004 ACTIONSCRIPT 2.0 Spezifikationen PDF herunterladen (Seite 28)

This is the Title of the Book, eMatter Edition

Chapter 1: Introduction to Flash Remoting

Java using JRun 4 or other J2EE servers

For the Java example, we will implement our remote service as a simple Java class.

Using Java as a remote service requires that the Flash Remoting gateway be installed

on a Java application server such as Macromedia’s JRun 4 or IBM’s WebSphere. The

Java version will not work with ColdFusion MX or Microsoft .NET servers.

Create a new plain text file in any text editor, name it HelloWorld.java, and enter the

code shown in Example 1-4.

Compile the class into your web server’s classpath. This may vary from server to

server, but the server’s WEB-INF (or SERVER-INF in the case of JRun) directory is

usually included within the server’s classpath. For example, to compile it using JRun

4, you would use (from a command prompt):

c:\jrun4\servers\myservername\server-inf\classes\com\oreilly\frdg\>javac

HelloWorld.java

If you are using JRun 4 and created the SSAS example earlier, rename HelloWorld.asr

to SomethingElse.asr to ensure that the Java class is used instead.

Once the class has been successfully compiled, place it in the

classpath\com\oreilly\

frdg\ directory and switch to Flash and test your movie. You should see the output

from the sayHello( ) method of the HelloWorld Java class. If you get an error that the

service cannot be found, make sure that you have compiled the class into the server’s

classpath.

Microsoft .NET server

ASP.NET services can be written in several languages, including VB.NET and C#.

This Microsoft .NET service example is implemented as a .NET DLL written in C#.

Open Microsoft’s Visual Studio .NET (VS.NET) and create a new project. From the

Project Types window, select Visual C# Projects; then, from the Templates window,

select Class Library. Set the name of the project to HelloWorld, as shown in

Figure 1-6. Rename the class file that appears from Class1.cs to HelloWorld.cs. The

code will work even if you do not rename the class file, but renaming it makes it eas-

ier to organize the files.

Example 1-5 shows the server-side C# code to implement the example as a Win-

dows .NET service.

Example 1-4. Java code for HelloWorld.java

package com.oreilly.frdg;

public class HelloWorld {

public String sayHello ( ) {

return "Hello World from Java";

}

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MACROMEDIA FLASH REMOTING MX-USING FLASH REMOTING FOR FLASH MX 2004 ACTIONSCRIPT 2.0 Spezifikationen Seite 28