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…
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:…
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…
Mysql in子查询中加limit报错 select id from aa where id in ( select id from bb limit 10 ); 改写成 SELECT id FROM aa WHERE id IN ( SELECT * FROM (SELECT id FROM bb LIMIT 10) AS ids );…
File "/home/harrison/anaconda3/lib/python3.7/site-packages/matplotlib/image.py", line 634, in set_data raise TypeError("Image data cannot be converted to float")TypeError: Image data cannot be converted to float 代码如下: #!/usr/bin/python…
今天在MySQL 5.7版本的数据库中导库InnoDB表字段长度时遇到了"ERROR 1071 (42000): Specified key was too long; max key length is 767 bytes"错误,第一次遇到这个错误,遂花了点学习.研究过.总结这个问题. 公司使用的mysql数据库版本是5.7 在往里边导入sql语句时候,总是提示 ERROR 1071 (42000): Specified key was too long: max key lengt…
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…
网上找的案例是: 实体类字段定义:private String sku_no;dao中接口名定义:Goods findBySkuNo(String skuNo);spring-data按照接口方法定义的名字(默认认为是驼峰写法)skuNo去实体类查找对应字段,当找不到时,就报错了:org.springframework.data.mapping.PropertyReferenceException: No property skuNo found for type Goods! Did you…
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…