class path resource cannot be opened because it does not exist

错误信息"class path resource [beans.xml] cannot be opened because it does not exist"表示无法打开指定的类路径资源"beans.xml"，因为它不存在。
在代码中，可能是因为getResource方法的使用错误导致无法找到该资源。正确的方法是使用getResources方法来获取文件系统文件或从类路径下获取指定的文件。
在你提供的代码示例中，setMapperLocations方法使用了错误的getResource方法，应该使用getResources方法来获取类路径下的文件。正确的示例代码如下：

sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:/mapper/db02/*Mapper.xml"));

请确保代码中使用了正确的方法来获取类路径下的资源文件，以解决该问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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