目录前言步骤一：引入依赖步骤二：配置多个数据源application.properties 示例：步骤三：自定义动态数据源1. 自定义 DynamicDataSource 类2. 定义 DataSourceContextHolder 类3. 配置动态数据源步骤四：切换数据源1.
I am trying to print the stack trace of the exception. However, for negative test case, only the unexpected exception is printed.
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