Android Error:(1, 0) Gradle version 2.2 is required. Current version is 3.4.1.

我们在使用Android Studio的时候新建项目没什么问题的,但是当我们下载一份Github上的项目导入进去的时候却没法正常使用,其原因主要是gradle配置问题。而由于gradle这个玩意儿版本更新太快,android Studio每个版本也不一样。比如2.3版本使用gra
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linux 编译中required file `./ltmain.sh' not found 错误的解决办法(转)

在linux下编译c/c++程序出错:$ automake --add-missing....configure.in:18: required file `build/ltmain.sh' not found....-----------------------------------------
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python version 2.7 required,which was not found in

python version 2.7 required,which was not found in 出现上面这种情况的原因我推测有两种:       
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python version 2.7 required,which was not found in the registry

## script to register Python 2.0 or later for use with win32all# and other extensions that require Python registry settings## written by Joakim Loew f
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beans.factory.BeanCreationException beans.factory.annotation.Autowired(required=true)

主要是这三个方面排查:1,注入写成这样  @Autowired   private BrandServiceImpl      brandServiceImpl; 2,jar冲突,在pom.xml中
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checking for event2/thread.h... no libevent_pthreads required, failing

/********************************************************************************** * checking for event2/thread.h... no libevent_pthreads required
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pip安装包报错:Microsoft Visual C++ 9.0 is required Unable to find vcvarsall.bat

pip安装包报错:Microsoft Visual C++ 9.0 is required Unable to find vcvarsall.batWindows7下pip安装包报错:Microsoft Visual C++ 9.0 is required Unable to find vcvars
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mvc AddImplicitRequiredAttributeForValueTypes

1、AddImplicitRequiredAttributeForValueTypes (为值类型添加隐式必填验证),默认值 为true。刚在mvc view(html)中会为model的值类型属性(int,double,decimal,datetime等)自动添加data-val-required
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项目重新部署后报The attribute required is undefined for the annotation type XmlElementRef

在另外一台机器上部署项目,项目导进Eclipse中发现有异常public class BooleanFeatureType extends FeatureBaseType{ @XmlElementRef(name = "Value", namespace = "http://schema
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Apache Mahout 0.9、10.1、11. CardinalityException: Required cardinality 60 but got 29

  我们可以使用Apache Mahout来快速创建高效扩展性又好的机器学习应用。Mahout结合了诸如H2O算法、Scala、Spark和Hadoop MapReduce等模块,为开发人员提供了一个构建可扩展算法的环境。现在最新的版本是去年11月6日发布的0.11.1版本。&n
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