SecurityException during executing jnlp file (Missing required Permissions manifest attribute in main jar)
问题 OS: Windows 7 64 bit Java: jdk1.7.0_51 I have a jnlp file. When I double click on this, exception is occurred as below: Application Error: Unable to launch the application Exception: java.lang.SecurityException: Missing required Permissions manifest attribute in main jar 回答1: JAR File Manifest Attributes for Security The JAR file manifest contains information about the contents of the JAR file, including security and configuration information. Add the attributes to the manifest before the JAR