Gradle: Cannot add task 'wrapper' as a task with that name already exists

Gradle构建项目报错：Cannot add task 'wrapper' as a task with that name already exists

现象描述：

   使用6.2.2版本Gradle构建springframework 4.3.6-release源码时控制台报出上述错误 

问题解决：

   将build.gradle中 

task wrapper(type: Wrapper) {
   // config...
}

修改为：

wrapper {
    //config...
}