javascript 如何使用代码检查浏览器中是否安装了 Java 插件？
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How to check whether Java plugins are installed or not in a browser using Code .?
提问by SSN
How to check whether Java plugins are installed or not in a browser using java or javascript or JSP Code .?
如何使用 java 或 javascript 或 JSP 代码检查浏览器中是否安装了 Java 插件？
回答by Ryan Fernandes
Java/Sun/Oracle provides a deployment toolkit scriptin the form of a JavaScript file that lets you achieve what you need.
Java/Sun/Oracle以 JavaScript 文件的形式提供了一个部署工具包脚本，可让您实现所需的功能。
You could invoke the getJREs()function which returns an array of currently-installed JRE version strings.
您可以调用getJREs()返回当前安装的 JRE 版本字符串数组的函数。
You can even install a particular JRE version if you need to, via the installJRE(requestVersion)function.
如果需要，您甚至可以通过该installJRE(requestVersion)功能安装特定的 JRE 版本。
回答by Dead Programmer
Use deployJava.jsto check the java installation.
使用deployJava.js检查Java安装。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript" src="deployJava.js">
</SCRIPT>
<script type="text/javascript">
function call()
{
if (deployJava.versionCheck("1.6.0+") || deployJava.versionCheck("1.4") || deployJava.versionCheck("1.5.0*"))
{
alert("Java is Enabled");
} else
{
alert("Java is Not Enabled");
}
}
</script>
<BODY onload="call();">
</BODY>
</HTML>
回答by Dominik Steiner
I tried jqplugin and deployJava first, but those did fail for IE8 at least. So i came over this lib, that has the most comprehensive documentation and implementation that i could find and worked for all the browser that i could test
我首先尝试了 jqplugin 和 deployJava，但至少对于 IE8 来说这些都失败了。所以我找到了这个库，它有最全面的文档和实现，我可以找到并适用于我可以测试的所有浏览器
回答by Pato de Borracha
From Navigator javaEnabled(): var x = "Java Enabled: " + navigator.javaEnabled();
从导航器 javaEnabled()：var x = "Java Enabled: " + navigator.javaEnabled();
The result of x will be: Java Enabled: false
x 的结果将是：Java Enabled: false
回答by ysrb
Try this:
试试这个：
https://cdnjs.com/libraries/jqplugin
https://cdnjs.com/libraries/jqplugin
Eg.
例如。
jQuery.browser.java //Java
