说明你的程序引用了java.sql这个包，但是没有用到里面的类 应该是IDE报给你的吧？
-导入java.sqlserver不能 翻译结果5复制译文编辑译文朗读译文返回顶部 -进口java.sql不可能是 相关内容 aknow your username 知道你的用户名[translate] a流程更新 Flow renewal[translate] a按照如下向导 According to following guide[translate] aIt causes unfair competition in the market economy and puts the wh...
1、导入java.sql时The import java.sql cannot be resolved 首先保证你已经导入了mysql-connector-java-5.1.39-bin.jar包,此问题是导入jar之后才出现的,解决方法:修改项目包下的/FirstProject/src/module-info.java文件内容,FirstProject为我的项目名称。 2、Class.forNa... ...
1. IP地址错误。在设置URL时可能输入错误，例如：jdbc:oracle:thin:@192.168.0.36:1521:sharp。这时需要确认数据库服务器是否正确。可以通过ping服务器的IP地址来检查。如果ping不通，需要将URL更改为正确的服务器地址。2. 端口号错误。虽然这种情况较为罕见，但也可以检查一下。如果不确定端口号是否...
1 java.sql.SQLException:The transaction is no longer active-status:'Rolled back.[Reason=Unknow]'. Check the SQL Statement (preparation failed). --- Cause:java.sql.SQLException:The transaction is no longer active - status:'Rolled back.[Reason=Unknown]'.No further JDBC access is allowed within...
休眠操作:无法打开连接;未分类为SQL SQLEXCEPTION [???]; SQL状态[空]错误代码[0];连接无法从底层数据库获得嵌套异常java.sql.SQLException:连接从基础数据库中无法获取! 翻译结果2复制译文编辑译文朗读译文返回顶部 休眠操作: 无法打开连接 ;未分类的 SQLException sql [??] ;SQL 状态 [空值] ;错误代码 [0] ...
As a result, the PreparedStatement object contains not just a SQL statement, but a SQL statement that has been precompiled. This means that when the PreparedStatement is executed, the DBMS can just run the PreparedStatement SQL statement without having to compile it first. Although you can use ...
is executed, the switch to the new database will not happen until the end of the current request. Only in a next request the database switch becomes effective.- The Connection String must connect to a database with the same type (e.g. Oracle, SQL Server, MySQL) as the one ...
After a Flink SQL job is submitted on DLI, the job fails to be executed. The following error information is displayed in the job log:connect to DIS failed java.lang.Illeg
See the latest Javadoc of thejava.sqlpackage or the documentation of your JDBC driver for more information about these subclasses. Other Subclasses of SQLException The following subclasses ofSQLExceptioncan also be thrown: BatchUpdateExceptionis thrown when an error occurs during a batch update operation...