从 Flex 调用 Java Applet

发布于 2024-08-15 11:37:07 字数 201 浏览 1 评论 0原文

我正在开发 Flex 应用程序，我需要从 Flex 打开一个 Java Applet（例如单击按钮）。我特别想打开 imageJ，这是一个特定的成像程序，可以作为应用程序、小程序或集成在网页中。有没有办法从 Flex 调用它？我看过一些教程，解释了如何从 Flex 调用另一个 Java 文件中的单个函数，但我不太确定这就是我正在寻找的内容。感谢您的回答，干杯，

大卫

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锦爱 2024-08-22 11:37:07

我不知道是否有更好的方法，但如果我这样做，我会编写一个 JavaScript 函数来加载 Java 小程序（可能像 document.write("

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泛滥成性 2024-08-22 11:37:07

在小程序中公开一个公共方法，Flex 将调用该方法。您可以通过以下方式加载小程序。这是一个示例程序，调用java方法并从java获取值，您可以根据您的需要进行更改

    <object
    id = "MyApplet"
    name = "Some name"
    classid = "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width="0" height="0">
    <PARAM NAME = "CODE" VALUE = "com.my.applet.MyApplet.class" >
    <PARAM NAME = "CODEBASE" VALUE = "." >
    <PARAM NAME = "ARCHIVE" VALUE = "applet-client.jar" >
    <PARAM NAME = "cache_option" VALUE="No">

    <PARAM NAME = "java_version" VALUE="1.6+">
    <param name = "type" value = "application/x-java-applet;version=1.6">
    <comment>
        <embed
            name = "MyApplet"
            type = "application/x-java-applet;version=1.6" \
            CODE = "com.my.applet.MyApplet.class" \
            JAVA_CODEBASE = "." \
            ARCHIVE = "applet-client.jar"
            cache_option = "No"
            scriptable = false
            pluginspage = "http://java.sun.com/products/plugin/index.html#download"
            width="0" height="0"
        >
            <noembed>
            </noembed>
        </embed>
    </comment>

</object>

通过您的html文件中的上述内容（我不会解释所有内容），小程序将被下载并准备使用。现在，单击 Flex 应用程序上的按钮，您应该看到如下所示的内容。

var returnedStringFrom java:String=ExternalInterface.call("document.MyApplet.functionInJava",stringParam);

注意：MyApplet是上面对象声明中的名称，functionInJava是java类com.my.applet.MyApplet中的公共函数。它接受一个参数并返回一个字符串参数。 Java 程序如下所示。

package com.my.applet;

public class MyApplet{
//other methods..

public String functionInJava(String stringpm){

// your implementation 
return "SomeString";
}
}

快乐编码。

Expose a public method in your applet, which the flex would call. You could load the applet the following way. It is a sample program, to call java methods and get a value from java, you can do changes as per your need

    <object
    id = "MyApplet"
    name = "Some name"
    classid = "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width="0" height="0">
    <PARAM NAME = "CODE" VALUE = "com.my.applet.MyApplet.class" >
    <PARAM NAME = "CODEBASE" VALUE = "." >
    <PARAM NAME = "ARCHIVE" VALUE = "applet-client.jar" >
    <PARAM NAME = "cache_option" VALUE="No">

    <PARAM NAME = "java_version" VALUE="1.6+">
    <param name = "type" value = "application/x-java-applet;version=1.6">
    <comment>
        <embed
            name = "MyApplet"
            type = "application/x-java-applet;version=1.6" \
            CODE = "com.my.applet.MyApplet.class" \
            JAVA_CODEBASE = "." \
            ARCHIVE = "applet-client.jar"
            cache_option = "No"
            scriptable = false
            pluginspage = "http://java.sun.com/products/plugin/index.html#download"
            width="0" height="0"
        >
            <noembed>
            </noembed>
        </embed>
    </comment>

</object>

With the above in your html file( I am not explaining everything) , the applet will be downloaded and ready to use. Now on click of a button on your flex app, you should have something like below.

var returnedStringFrom java:String=ExternalInterface.call("document.MyApplet.functionInJava",stringParam);

Note : MyApplet is the name in the object declaration above, the functionInJava is a public function in the the java class com.my.applet.MyApplet. It takes a parameter and returns a string parameter. The Java program will look like below.

package com.my.applet;

public class MyApplet{
//other methods..

public String functionInJava(String stringpm){

// your implementation 
return "SomeString";
}
}

Happy coding.

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