你打开tomcat7\conf\catalina.properties文件

再打开tomcat5的,看完后, 你就知道了

 tomcat 5.5.35

## List of comma-separated paths defining the contents of the "shared" # classloader. Prefixes should be used to define what is the repository type.# Path may be relative to the CATALINA_BASE path or absolute. If left as blank,# the "common" loader will be used as Catalina's "shared" loader.# Examples:#     "foo": Add this folder as a class repository#     "foo/*.jar": Add all the JARs of the specified folder as class #                  repositories#     "foo/bar.jar": Add bar.jar as a class repository # Please note that for individual jar files, e.g. bar.jar, you need the URL form# starting with file:.shared.loader=${catalina.base}/shared/classes,${catalina.base}/shared/lib/*.jar

tomcat 7.0.47

## List of comma-separated paths defining the contents of the "shared"# classloader. Prefixes should be used to define what is the repository type.# Path may be relative to the CATALINA_BASE path or absolute. If left as blank,# the "common" loader will be used as Catalina's "shared" loader.# Examples:#     "foo": Add this folder as a class repository#     "foo/*.jar": Add all the JARs of the specified folder as class#                  repositories#     "foo/bar.jar": Add bar.jar as a class repository# Please note that for single jars, e.g. bar.jar, you need the URL form# starting with file:.shared.loader=