ibatis中如何获取connection
时间: 2024-05-25 07:19:42 浏览: 12
在 iBatis 中获取 Connection 的方法是通过使用 DataSource 对象来获取连接。首先需要在配置文件中配置 DataSource,然后通过 SqlMapClient 的 getDataSource() 方法获取 DataSource 对象,最后通过 DataSource 对象的 getConnection() 方法获取 Connection。
相关问题
ibatis sql语句输出
在使用iBatis时,可以通过配置log4j来输出SQL语句的调试信息。在log4j.properties文件中,可以设置不同的日志级别来控制输出的详细程度。例如,设置以下内容可以输出SQL语句的调试信息:
```
# Preparing Statement: SQL
log4j.logger.java.sql.Connection = DEBUG
# Executing Statement: SQL / Parameters / Types
log4j.logger.java.sql.Statement = DEBUG
log4j.logger.java.sql.PreparedStatement = DEBUG
# ResultSet: Header / Result
log4j.logger.java.sql.ResultSet = DEBUG
```
这样配置后,在生产环境中就可以输出SQL语句的调试信息了。\[2\]同时,关于iBatis中的特殊字符,有两个常见的符号:#和$。#会将传入的数据加上引号,可以避免SQL注入问题,通常用于传递参数值。而$会直接将传入的数据放入SQL语句中,适用于一些特殊情况,比如在orderby后面或者where xx in ()的括号里等。\[3\]
#### 引用[.reference_title]
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failed to obtain jdbc connection
"Failed to obtain JDBC Connection"表示未能获取JDBC连接。这个错误可能有多个具体的报错信息和报错类型。一个可能的报错信息是"CLIENT PLUGIN AUTH is required",它表示需要客户端插件授权。另一个可能的报错信息是"报错:Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; spring.MyBatisExceptionTranslator.translateExceptionIfPossible ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92)",这个报错信息显示了异常的传递和处理过程。无论具体的报错信息是什么,"Failed to obtain JDBC Connection"都表示在获取JDBC连接时发生了错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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