could not set unknown property s

在使用gradle编译时，出现如下错误：

J:\zkclient-master>gradlew

FAILURE: Build failed with an exception.

• Where:
  Build file 'J:\zkclient-master\build.gradle' line: 9
  7

• What went wrong:
  A problem occurred evaluating root project 'zkclient'.

No such property: sonatypeUsername for class: org.gradle.api.publication.maven
.internal.ant.DefaultGroovyMavenDeployer

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug
  option to get more log output.

BUILD FAILED

Total time: 2.82 secs

解决

在项目根目录创建名为gradle.properties的属性文件，在文件中输入下面的内容：

sonatypeUsername=
sonatypePassword=
sonatypeRepo=

然后保存，再编译，该错误即可消除。