[英]Browser Java Plugin Detection
确定浏览器中是否安装了 Sun Java 插件的首选方法是什么?
script src="http://java.com/js/deployJava.js" if (deployJava.versionCheck('1.6')) { alert("1.6 installed") }
您也可以考虑PluginDetect脚本。
这不是您确切问题的答案,而是作为确定浏览器本身的解决方案提供的。 不要太苛刻,这真的是我前段时间写的老代码。
import java.applet.*;
public class BrowserDetector extends Applet {
public void init() {
if (isNetscape()) {
System.out.println("This browser is a Netscape Browser.");
}
if (isMicrosoft()) {
System.out.println("This browser is a Microsoft Browser.");
}
System.out.println("VM Type: " + getVMType());
}
public static boolean isNetscape() {
try {
Class.forName("netscape.applet.MozillaAppletContext");
} catch (ClassNotFoundException e) {
System.out.println("This browser is not a Netscape Browser.");
return false;
}
return true;
}
public static boolean isMicrosoft() {
try {
Class.forName("com.ms.applet.GenericAppletContext");
} catch (ClassNotFoundException e) {
System.out.println("This browser is not a Microsoft Browser.");
return false;
}
return true;
}
public String getVMType() {
String theBrowser = "No VM";
String appletContext = getAppletContext().toString();
if (appletContext.startsWith("sun.applet.AppletViewer"))
theBrowser = "APPLETVIEWER";
else if (appletContext.startsWith("netscape.applet."))
theBrowser = "NETSCAPE";
else if (appletContext.startsWith("com.ms.applet."))
theBrowser = "MICROSOFT";
else if (appletContext.startsWith("sunw.hotjava.tags.TagAppletPanel"))
theBrowser = "HOTJAVA";
else if (appletContext.startsWith( "sun.plugin.navig.win32.AppletPlugin"))
theBrowser = "NETSCAPEPLUGIN";
else if (appletContext.startsWith( "sun.plugin.ocx.ActiveXApplet"))
theBrowser = "MICROSOFTPLUGIN";
else if (appletContext.startsWith( "sun.plugin.viewer.context.IExplorerAppletContext"))
theBrowser = "MICROSOFTPLUGINJRE1.4";
return theBrowser;
}
}
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