问题
I have an existing application that is compiled with java 1.6 and runs with jnlp/webstart. If I run this application from the client with JRE 1.6 everything is fine. But when I compile the code with java JDK 7 and run the client with JRE 1.7.67 I see the java 7 splash screen and nothing else seems to happen.
Below I pasted the log file....can anyone give a good reason why the application is not started? The other thing that bothers me is that the existing code was written 10 years a go and has not got any javaFX code.
Log started: wo, 24 dec 2014 15:59:52 +0100
Java Plug-in 10.67.2.01
Using JRE version
1.7.0_67-b01 Java HotSpot(TM) 64-Bit Server VM
basic: No valid JFX runtime at [C:\Program Files\Java\jre7\bin\javaw.exe]
basic: Running JVMParams: [JVMParameters: isSecure: true, args:]
-> [JVMParameters: isSecure: true, args:]
temp: new XMLParser with source:
temp: <?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="http://localhost/test" href="db/webstart/cache.jnlp">
<information>
<title>Test app</title>
<vendor>Implemented by Test</vendor>
<description>Cache Cleaner</description>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.7" />
<property name="user.language" value="nl"/>
<property name="user.country" value="NL"/>
<jar href="lib/test.jar" main="true"/>
</resources>
<application-desc main-class="org.test.jnlp.CacheCleaner" >
<argument>http://localhost/test.jnlp</argument>
</application-desc>
</jnlp>
回答1:
From memory, when I upgraded my JDK a year or two ago I also noticed that JavaWS applications no longer launched successfully.
With a bit of Googling, I found that the default security settings had changed.
You may have the same problem, so you may have to add some URLs to an allowed list.
On a linux system I believe this was achieved by running jcontrol from the JDK.
来源：https://stackoverflow.com/questions/27679260/why-do-i-get-no-valid-jfx-runtime