User Libarary imported by eclipse

When importing an external jar package using Eclipse, the add User libarary is often used in such a way that the external jar packages are not added directly to the web-inf/libs, where are these jars introduced?

Using an external jar, you can place it under Classpath, and in the current web directory you can find the. classpath file, open as follows:

<?xml version= "1.0" encoding= "UTF-8"?
<CLASSPATH>
<classpathentry kind=" src "path=" src "/>
<classpathentry kind=" con "path=" org.eclipse.jdt.launching.jre_container/ org.eclipse.jdt.internal.debug.ui.launcher.standardvmtype/javase-1.7 "/>
<classpathentry kind=" con "path=" org.eclipse.jdt.user_library/common-logging "/>
<classpathentry kind= "con" path= "org.eclipse.jdt.USER_ Library/spring "/>
<classpathentry kind=" Output "path=" Bin "/>
</CLASSPATH>

Only two libarary:spring and common-logging are introduced here. As you can see, this is just the user libarary name, where is the path that really introduces those jars?

Under {Workspace}\.metadata\.plugins\org.eclipse.core.runtime\.settings's org.eclipse.jdt.core.prefs file, you can find the following:

Org.eclipse.jdt.core.userlibrary.spring=xxx

Org.eclipse.jdt.core.userlibrary.common-logging=xxx

xxx Here is the actual address of the corresponding jar on the hard disk. Other projects under current workspace can also be referenced directly to the corresponding user libarary.

Take common-logging as an example, after removing \ t, \ r \ n and other escape characters, as follows:

<?xml version= "1.0" encoding= "UTF-8"?>
<userlibrary systemlibrary= "false" version= "2" >
<archive path= "D:/javawebapis/log/commons-logging-1.2.jar"/>
</userlibrary>

The path of the archive node is the hard disk location of the jar package, and if there are multiple jars, there will be multiple archive nodes

User Libarary imported by eclipse