#VAL

mysql错误:Column count doesn't match value count at row 1

mysql错误:Columncountdoesn'tmatchvaluecountatrow1是由于类似INSERTINTOtable_name(col_name1,col_name2,col_name3)VALUES('value1','value2');语句中,前后列数不等造成的, 1校验字段是否充分2列...

温故而知新-array_walk和sizeof和array_count_values()和extract()

1array_walk对数组的每一个元素应用任何函数用户自定义函数中的第一个参数指定为引用:&$value,来改变数组元素的值如果对一个参数使用取地址,那么会改变数组元素的值 2sizeof()count()函数的别名,用于数组元素的统计$cars=array("Volvo","BMW","Toyot...

uwsgi配置文件的一些细节,uwsgi错误invalid request block size

[uwsgi]#socket=127.0.0.1:8000#这种是使用代理方式访问的,不能直接输入端口访问,要搭配其他的HTTP服务比如NGINX,设置反向代理http=:8000#这种是直接可以输入IP端口访问module=hello.wsgimaster=truepidfile=/var/run/uwsgihell...

1.1.6版本Druid连接MSSQLServer 2008 R2报错The query timeout value -1 is not valid. #2210

https://github.com/alibaba/druid/releases/tag/1.1.8问题已修复,请使用新版本 xhhwc commented on21Dec20171.1.6版本Druid连接MSSQLServer2008R2报错:com.microsoft.sqlser...

spring boot通过Interceptor和HandlerMethodReturnValueHandler实现统一处理为controller返回对象统计处理时间

思路:实现思路都是基于Aop实现,方式上可以通过springaop和springmvc的aop机制都能实现。通过Interceptor的可以实现为controller插入开始时间和执行结束时间,并将数据放入response中,但是这里希望将数据直接放入ResponseBodyController返回的统一对象中,所以用...

spring mvc 4数据校验 validator

注解式控制器的数据验证、类型转换及格式化——跟着开涛学SpringMVChttp://jinnianshilongnian.iteye.com/blog/1733708Spring4新特性——集成BeanValidation1.1(JSR-349)到SpringMVChttp://jinnianshilongnian....

Spring JUnit org.hibernate.HibernateException: Unable to get the default Bean Validation factory

org.hibernate.HibernateException:UnabletogetthedefaultBeanValidationfactory  <propertyname="hibernateProperties"><props><propkey="hiber...

webpack Dev Server Invalid Options options should NOT have additional prop

今日npmrunserve时提示ERRORValidationError:webpackDevServerInvalidOptionsoptionsshouldNOThaveadditionalproperties无效参数配置?如图:看提示好像是说webpack的devserver配置有点问题,于是去vue.confi...

Result Maps collection already contains value for com.miniprogram.meirong.user.dao.UserMapper.BaseResultMap

出现这种情况了,是mybatis-generator生成mapper.xml一遍之后。再修改数据库,然后再生成,它不会删去之前的,只是增加,就会出现两段相同的代码。<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEmapperPUBLIC"-//mybatis....

XML fragments parsed from previous mappers does not contain value for com.miniprogram.meirong.comment.dao.CommentMapper.Base_Column_List

mybatis出错了,正在找原因。XMLfragmentsparsedfrompreviousmappersdoesnotcontainvalueforcom.miniprogram.meirong.user.dao.UserMapper.Blob_Column_List嗯,这个报错,要看仔细,之后去分析,不能怕,一目...

用String.valueOf转一个long类型的值,报null

https://blog.csdn.net/u011450110/article/details/51026102这个讲了,但是不清楚。我要自己试一下。...

The input stream is not a valid binary format.

Theinputstreamisnotavalidbinaryformat.Thestartingcontents(inbytes)are:53-79-73-74-65-6D-2E-52-75-6E-74-69-6D-65-2E-52-65...Description: Anunhandledexceptio...
代码星球 代码星球·2021-02-08

return value, output parameter,

https://docs.microsoft.com/en-us/sql/t-sql/language-elements/return-transact-sql?view=sql-server-2017https://stackoverflow.com/questions/706361/getting-return-v...

NOT IN clause and NULL values

https://stackoverflow.com/questions/129077/not-in-clause-and-null-valuesThisissuecameupwhenIgotdifferentrecordscountsforwhatIthoughtwereidenticalqueriesoneusing...
代码星球 代码星球·2021-02-08

How to create a List of ValueTuple?

 ValueTuple需要通过NuGet安装System.ValueTuplehttps://docs.microsoft.com/en-us/dotnet/csharp/tuples?view=netframework-4.7.2https://docs.microsoft.com/en-us/dotnet...
代码星球 代码星球·2021-02-08
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