DataSync-1.9.1.jar will not open

[codymays]

I am able to run DataSync-1.8.2.jar without an issue (opens successfully) on our Windows 2012 server but when double-clicking to open DataSync-1.9.1.jar or attempting to open from command line nothing happens. We have Java RE 1.7.0_79.

[rjmac]

What does it print if you run it from the console with java -jar DataSync-1.9.1.jar?

[codymays]

Ah, looks like it's a version error.

[image: image.png]

On Thu, Aug 16, 2018 at 12:30 PM rjmac notifications@github.com wrote:

What does it print if you run it from the console with java -jar DataSync-1.9.1.jar?

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[rjmac]

Hm, that image didn't come through, but I'm going to assume it says something like "unsupported major.minor version somethingorother". Which isn't right, the jar was compiled on java 8 but the build's supposed to be configured to emit java 7 bytecode. Digging a bit to see what's going on here.

[codymays]

Ah, sorry about the image. Here is the exception text:

Microsoft Windows [Version 6.3.9600] (c) 2013 Microsoft Corporation. All rights reserved.

D:\Socrata\DataSync API>java -jar DataSync-1.9.1.jar Exception in thread "main" java.lang.UnsupportedClassVersionError: javax/ws/rs/P rocessingException : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:14 2) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at com.socrata.datasync.ui.SimpleIntegrationWizard.getNewIntegrationJob( SimpleIntegrationWizard.java:431) at com.socrata.datasync.ui.SimpleIntegrationWizard.generateMainPanel(Sim pleIntegrationWizard.java:628) at com.socrata.datasync.ui.SimpleIntegrationWizard.(SimpleIntegrat ionWizard.java:138) at com.socrata.datasync.ui.SimpleIntegrationWizard.get(SimpleIntegration Wizard.java:158) at com.socrata.datasync.Main.main(Main.java:32)

On Thu, Aug 16, 2018 at 12:41 PM rjmac notifications@github.com wrote:

Hm, that image didn't come through, but I'm going to assume it says something like "unsupported major.minor version somethingorother". Which isn't right, the jar was compiled on java 8 but the build's supposed to be configured to emit java 7 bytecode. Digging a bit to see what's going on here.

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[rjmac]

Ugh ok I see what's going on. An included library we upgraded is built for Java 8 now, so even though datasync proper has 1.7 bytecode it still requires 8. I'm not sure we can downgrade it (the old version of the library was very ancient), but switching to a current version of Java will solve this problem.

[codymays]

Gotcha, thanks. So any version 8 and above?

On Thu, Aug 16, 2018 at 12:47 PM rjmac notifications@github.com wrote:

Ugh ok I see what's going on. An included library we upgraded is built for Java 8 now, so even though datasync proper has 1.7 bytecode it still requires 8. I'm not sure we can downgrade it (the old version of the library was very ancient), but switching to a current version of Java will solve this problem.

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[rjmac]

Yep, 8+ should all work.

[rjmac]

I've updated the documentation page to reflect this new minimum verison.