JCE补丁下载(JDK6、JDK7、JDK8)

* 说明：异常java.security.InvalidKeyException:illegal Key Size的解决方案
* <ol>
* <li>在官方网站下载JCE无限制权限策略文件
* <li>下载后解压，可以看到local_policy.jar和US_export_policy.jar以及readme.txt</li>
* <li>如果安装了JRE，将两个jar文件放到%JRE_HOME%\lib\security目录下覆盖原来的文件</li>
* <li>如果安装了JDK，将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件</li>
* </ol>

适用JDK6的JCE补丁:

http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html

适用JDK7的JCE补丁:

http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

适用JDK8的JCE补丁:
http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

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