报错如下 [Drc 23-20] Rule violation (NSTD-1) Unspecified I/O Standard - 4 out of 142 logical ports use I/O standard (IOSTANDARD) value 'DEFAULT', instead of a user assigned specific value. This may cause I/O contention or incompatibility with the board p…
问题:当子查询内存在ORDER BY 字句时查询会报错 SQL: SELECT * FROM ( SELECT * FROM USER ORDER BY USER_CORD ) S. 解决办法:在子查询SQL语句SELECT 后加 TOP 100 PERCENT (查询出前百分比为100的数据,也就是查询出全部数据) SQL: SELECT * FROM ( SELECT TOP 100 PERCENT * FROM USER ORDER BY USER_CORD )…
在操作已经创建好的数据库时,若是添加新的实体类或者修改原有数据库上下文,会报如下错误: The model backing the 'StudentDbContext' context has changed since the database was created. Consider using Code First Migrations to update the database(http://go.microsoft.com/fwlink/?LinkId=238269). 解决方法:…
oracle-function-into时为null报错 create or replace function P_ADD_CUSTOMER_FOR_CSS_heyt_test(i_cust_name in varchar2, i_en_name in varchar2, i_cust_sex in varchar2, i_cust_birthday in date, i_cust_id_type in varchar2, i_cust_id_no in varchar2, i_data_qua…
项目框架:spring+springmvc+mybatis 问题描述:前端ajax用post方式提交json数据给后端时,网络报错 415 前端异常信息:Failed to load resource: the server responded with a status of 415 (Unsupported Media Type) 后端异常信息:无 报错原因:缺少jackson包 类似问题注意点: springmvc添加配置.注解: pom.xml添加jackson包引用: Ajax请求…
新建maven工程时,pom.xml报错:第一行报如下错误:multiple annotations found at this line后添加org.eclipse.m2e相关的plugin配置后,错误消失,完整pom.xml如下: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schem…
wepy开发小程序使用getApp().globalData保存全局数据很方便,但是会在控制台看到很多报错:“error 'getApp' is not defined no-undef”,这是eslint报错. 解决办法:在.eslintrc.js文件中加入 globals: { getApp: true }…
创建maven项目时pom.xml时: 出现如下报错信息: Failure to transfer commons-lang:commons-lang:jar:2.1 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or u…
java.lang.IllegalStateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here这个异常 这个错误,网上说的原因一大推,反正我这个出的问题 是因为 虽然我在 spring 里把事务都配置好了,结果运行就出现这个错误,看看配置都没什么问题,都是网上 案例 照 写编码的,还是错的,结果发现是因为 我…