Travis CI Could not find or load main class org.gradle.wrapper.GradleWrapperMain 错误

问题

在 Travis CI 编译的时候出现

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

错误。

详细的错误日志为：

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
The command "eval ./gradlew assemble " failed. Retrying, 2 of 3.
Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
The command "eval ./gradlew assemble " failed. Retrying, 3 of 3.
Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
The command "eval ./gradlew assemble " failed 3 times.
The command "./gradlew assemble" failed and exited with 1 during .
Your build has been stopped.

解决方法

看看你提交的代码中 gradle 文件夹有没有提交上去。

如果没有提交这个文件夹的话，需要将源代码中的 gradle 提交到代码库上。