spring+hibernate整合:报错信息如下 org.hibernate.HibernateException: No Session found for current thread at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:106) at org.hibernate.internal.SessionFactoryImpl.getC
spring boot 启动遇到报错,具体如下 Description: Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. Reason: Failed to determine a suitable driver class Action: Consider the following: If you want a
练习Go修改字符串的时候遇到这个问题:cannot use "c" (type string) as type byte in assignment,代码如下: package main import "fmt" func main() { s := "hello" c := []byte(s) // 将字符串转为[]byte类型 c[0] = 'c' // byte用''单引号包括字符 不然报错cannot use "c"
1.Spring boot,Mybatis 启动报错 Failed to auto-configure a DataSource *************************** APPLICATION FAILED TO START *************************** Description: Failed to configure a DataSource: 'url' attribute is not specified and no embedded datas
springboot 升级到2.0之后发现配置多数据源的时候报错: "jdbcUrl is required with driverClassName."或者Cause: java.lang.IllegalArgumentException: dataSource or dataSourceClassName or jdbcUrl is required.] with root cause 主要原因是在1.0 配置数据源的过程中主要是写成:spring.datasource.url 和
在oracle修改user表字段name类型时遇到报错:“ORA-01439:要更改数据类型,则要修改的列必须为空”,是因为要修改字段的新类型和原来的类型不兼容. 如果要修改的字段数据为空时,则不会报这种类型的错误,可以进行字段类型的修改. alter table user modify (name varchar2(20)); 要修改字段的新类型和原来的类型不兼容时,可以通过如下方式解决该问题: 1.修改原字段名name为临时字段name_new: alter table user renam