Modify the java security level through the configuration file
The configuration file name is deployment.properties
位置：C:\Users\Administrator\AppData\LocalLow\Sun\Java\Deployment\deployment.properties
Where deployment.security.level=MEDIUM is to modify the java security level, and the control panel is
where changing the java security level through the registry has no effect, the registry location is
HKEY_CURRENT_USER\Software\AppDataLow\Software\JavaSoft\DeploymentProperties
deployment.security.level is the java security level configuration, but the modification here is invalid
Details: http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/jcp/properties.html