window7 64位下安装第三方包,,比如安装yaml的exe执行文件,会 报错及解决:python version 2.7(3.4) required,which was not found in the registry 方法:新建一个register.py 文件,把一下代码贴进去,保存 # # script to register Python 2.0 or later for use with win32all # and other extensions that require P…
pom.xml里有红叉报错的解决办法一: 1.把鼠标点在报的错上发现pom.xml报如下错误: Multiple annotations found at this line: - Failure to transfer org.slf4j:slf4j-log4j12:jar:1.7.21 from http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempte…
PHP empty函数在检测一个非变量情况下报错的解决办法. PHP开发时,当你使用empty检查一个函数返回的结果时会报错:Fatal error: Can't use function return value in write context 例如下面的代码: <?php echo empty(strlen('test')); 转到PHP在线手册里面查看,在empty函数描述的地方有以下文字: Note : empty() only checks variables as anyth…
Base64 报错 的解决办法, 报错如下:1. FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. ] System.Convert.FromBase64Str…
maven插件报错之解决 用m2eclipse创建Maven项目时报错 maveneclipsebuilddependenciesauthorizationplugins 用m2eclipse创建Maven项目时报错 问题: Could not calculate build plan: Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from http://repo1.maven.…
MySQL中遇到的几种报错及其解决方法 1.[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''xxx'' at line 1 解决方法:将所有的" '' "换成" ·· "(将所有的英文单引号换为Tab键上面的那个点号)…
mysql报错及其解决方式 1.在使用group by 查询一张表的数据的时候:select date,time,max(delaytime) as delaytime,sum(delaynum) as delaynum, max(onlineCount) as onlineCount,sum(perMinuteVerify) as perMinuteVerify,auditor from verifyDelayLog WHERE `date` = '2016-06-29' group by t…
如何自定义JSTL标签 1.创建一个类,从SimpleTagSupport继承 A) 通过继承可以获得当前JSP页面上的对象,如JspContext I) 实际上可以强转为PageContext II) 通过PageContext可以拿到HttpServletRequest等对象 B) 通过JspContext可以获取输出流,向页面上输出内容(文字/HTML标签) C) 重写doTage()方法实现标签的内部逻辑 2.在tld(标签库描述)文件中添加<tag>标签 A) 如果tld还没有,则从…
Xamarin开发安装Visual Studio 2015 update2报错的解决办法错误信息:update 2 requires a member of the visual studio 2015 family当在没有安装VS 2015的电脑上安装update 2包,就会出现这个错误.所以,安装的时候需要识别VS的安装文件.VS 2015的安装文件大约5GB,VS 2015 with update 2的安装文件是7GB.…
Linux安装ElasticSearch后,ElasticSearch是不能用root用户启动的,以root用户启动会报错Refer to the log for complete error details,出现这种情况该如何解决呢?下面小编就为大家带来Linux安装ElasticSearch启动报错的解决方法,一起去看看吧 今天就出现的异常问题专门解决一下.你安装好ElasticSearch以后,在启动的时候需要注意的问题是,ElasticSearch是不能用root用户启动的(这是根据…