问题
When I run ./gradlew I get
Exception in thread "main" java.lang.NoClassDefFoundError: org/gradle/wrapper/GradleWrapperMain Caused by: java.lang.ClassNotFoundException: org.gradle.wrapper.GradleWrapperMain at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
My project compiles using the Android Studio but stopped compiling from command line
回答1:
Probably something went bad. The solution:
- Install gradle:
brew install gradle - Regenerate wrapper:
gradle wrapper
回答2:
See https://github.com/drone/drone/issues/256
My .gitignore had *.jar in it, so I wasn't getting all the jars I needed in my repository.
回答3:
I had the same, or similar, problem when trying to build my app from command line, but with an exception thrown for 'java.lang.ClassNotFoundException: com.sun.tools.javac.util.Context' which did not happen when building within Android Studio. I found out that AS brings along it's own JRE and I resolved the issue by setting 'JAVA_HOME' to the AS JRE path. In my case it turned into:
$ JAVA_HOME=/opt/android-studio/jre ./gradlew build
You can find this path under 'File' -> 'Project Structure' -> 'SDK Location', see screenshot.
来源：https://stackoverflow.com/questions/25670627/gradle-wrapper-noclassdeffounderror