使用Cordova构建Ionic APP时出错

Question

(node:16112) UnhandledPromiseRejectionWarning: CordovaError: Failed to run "javac -version", make sure that you have a JDK installed. You can get it from: http://www.oracle.com/technetwork/java/javase/downloads . Your JAVA_HOME is invalid: C:\\Program Files (x86)\\Java\\jre1.8.0_171

I checked my user environment variable and I have the variable JAVA_HOME and set to "C:\\Program Files (x86)\\Java\\jre1.8.0_171"

I also have C:\\Program Files (x86)\\Java\\jre1.8.0_171 appended to the user environment variable PATH.

Answer 1

make sure you have a JDK installed

This is the relevant part of this error message. Your JAVA_HOME points to a Java Runtime Environment (JRE), not to a Java Development Kit (JDK).

javac is the Java compilation command, which Cordova is attempting to execute in this case. However, javac is not shipped with the JRE as it is a development tool.

You need to download and install a JDK and set JAVA_HOME to point to it