最新回答 / 天使踩麻木
這是錯誤類型### Error querying database. ?Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!### The error...
2018-06-22
講師回答 / 翔仔
同學好，可以參照??https://gitee.com/xiangze/areadisplay?https://gitee.com/xiangze/demo 的源碼配置，應該說你的Dao方面的配置沒對導致的
2018-06-17
最新回答 / 慕用0639383
update tb_area????????? SET priority=????????????? last_edit_time=?????????? where area_id = ?你這字段中間少逗號了吧？應該這樣吧update tb_area? ? ? SET priority=?? ，last_edit_time=?? ? ?where area_id = ?
2018-06-12
最贊回答 / 慕后端5211452
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 --><dependency>? ? <groupId>c3p0</groupId>? ? <artifactId>c3p0</artifactId>? ? <version>0.9.1.2</version></dependency><...code...>
2018-06-10