PathMatchingResourcePatternResolver是一个Ant模式通配符的Resource查找器，可以用来查找类路径下或者文件系统中的资源。
classpath: 用于加载类路径（包括jar包）中的一个且仅一个资源
classpath*: 用于加载类路径（包括jar包）中的所有匹配的资源
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); Resource[] resources = null; //加载一个资源 resources = resolver.getResources("classpath:META-INF/spring.factories"); resources = resolver.getResources("META-INF/spring.factories"); resources = resolver.getResources("http://www.baidu.com"); //加载多个资源 resources = resolver.getResources("classpath*:META-INF/spring.factories"); resources = resolver.getResources("classpath*:META-INF/*.factories"); resources = resolver.getResources("file:d:/*.txt"); resources = resolver.getResources("classpath*:com/seasy/**/*.class");