jdbc连接oracle时报错 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableC 错误: Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connectio...
今天用换了台机器做我的毕业设计(数据库用的是oracle),配置好后启动服务器运行程序,出现了如下错误: Could not get JDBC Connection; nested exception is java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection 上网查找后,了解到可能原因是:1、监听没有启动(排除)。2、1521端...
Cannot create JDBC driver of class '' for connect URL 'null',你的配置文件里面没有配置URL吧
针对您遇到的 "could not get jdbc connection; nested exception is java.sql.SQLException" 错误,这里有几个可能的解决步骤和检查点,我将逐一说明: 1. 检查数据库连接配置 首先,确保您的 JDBC 连接字符串、用户名、密码等配置信息是正确的。这些通常是在您的应用程序的配置文件(如 application.properties 或applic...
c3p0有些年头了,也曾红极一时。 但你是否遇到过,明明并发并不高,连接池最大连接数也设的挺大了,还是报无法获取新连接。 Could not get JDBC Connection An attempt by a client to checkout a Connection has timed out. 参考文章: https://cloud.tencent.com/developer/article/2319703 ...
通过http://localhost:8088/user/login.do 发送POST请求之后总是提示无法取得JDBC连接,该怎么解决呢? 报错里面是提示D:\apache-tomcat-7.0.81\webapps\ROOT\WEB-INF\classes\mappers\UserMapper.xml文件里面的com.mmall.dao.UserMapper.checkUsername可能有问题,不过我没看出来 如下是checkUsername里面的内容 1 2...
根据您的描述，您在启动多个Spring Cloud服务时，出现了Could not get JDBC Connection的异常。这个异常...
在 连接数据库的时候,提示:Could not get JDBC Connection; nested exception is java.sql.SQLException: Java does not support the 刚开始是mysql的服务没有启动, 启动后有报: Could not get JDBC Connection; nested exception is java.sql.SQLException: Java does not support theUTF-8 ...
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 39 more Caused by: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) ...
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (ORA-01017: invalid username/password; logon denied ...