null connection returned
时间: 2024-05-24 21:12:37 浏览: 5
As an AI language model, I do not have the context to provide a specific answer. However, a "null connection returned" error message typically means that a connection to a database or server was attempted but was unsuccessful, resulting in a null value being returned. This could be due to various reasons such as incorrect login credentials, network issues, or server maintenance. More information about the specific context and error message would be required to provide a more accurate answer.
相关问题
org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection: DataSource returned null
org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection: DataSource returned null是由于无法获取到JDBC连接而引起的异常。这可能是由于配置文件中的数据库连接信息错误导致的。根据引用和引用,可以看出其中的错误信息显示了两种不同的情况。引用中的错误信息显示了访问数据库时使用的用户名为空,而引用中的错误信息没有明确指出具体的原因。可能是由于数据库连接配置文件中的密码写错或为空导致的。根据引用,可以看出在application.properties文件中找到了将密码写错或留空的情况。因此,解决这个问题的方法是在配置文件中正确配置数据库连接的用户名和密码。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Springboot+MySQL,出现Could not get JDBC Connection](https://download.csdn.net/download/weixin_38732425/13688000)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [【解决报错】Failed to obtain JDBC Connection](https://blog.csdn.net/weixin_43883815/article/details/109122690)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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dbeaver配置DB2
您可以按照以下步骤配置DB2数据库连接:
1. 打开命令行界面,并使用以下命令连接到您的数据库:<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [windows下DB2赋权以及DBeaver新建SCHEMA和TABLE](https://blog.csdn.net/Maple1997/article/details/106773782)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [DBeaver连接DB2数据库报错:Null connection returned](https://blog.csdn.net/chengqinju0490/article/details/100910542)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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