关于项目引进的包的

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src/java"/>
<classpathentry exported="true" kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/activation.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/antlr.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/aopalliance.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/axis.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/cglib-full-2.0.2.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-attributes-api-SNAPSHOT.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-attributes-compiler-SNAPSHOT.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-beanutils.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-collections-2.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-dbcp-1.2.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-digester.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-discovery.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-fileupload.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-lang-2.0.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-logging-1.0.3.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-pool-1.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-validator.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/dbunit-2.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/DenshiKessai.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/displaytag-1.0-patched.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/dom4j-1.4.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ehcache-0.9.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/hibernate2.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/itext-1.2.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/iTextAsian.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jakarta-oro.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jasper-compiler.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jasper-runtime.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/JavaRakuApi.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jaxrpc.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jmock-20050628-175146.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jmock-cglib-20050628-175146.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jp_lgwan_pdf.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jsocks.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jsp-api.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/JSQLConnect.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jstl-1.0.5.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/jta.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/junit-3.8.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/log4j-1.2.8.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/mail.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/odmg-3.0.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ojdbc14-10g.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ospievnt50.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ospiname50.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ospioadj50.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/ospiorb50.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/pjx.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/postgresql-8.0-311.jdbc3.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/saaj.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/sitemesh-2.2.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/spring.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/spring-mock.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/standard-1.0.5.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/struts.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/strutstest-2.1.0.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/svf.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/svfpstat.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/tcab.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/tcabcl.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/wsdl4j-1.5.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/xerces.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/xercesImpl.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/xml-apis.jar"/>
<classpathentry exported="true" kind="var" path="TOMCAT_HOME/common/lib/servlet-api.jar"/>
<classpathentry exported="true" kind="var" path="TOMCAT_HOME/common/lib/jasper-runtime.jar"/>
<classpathentry exported="true" kind="var" path="TOMCAT_HOME/common/lib/jsp-api.jar"/>
<classpathentry exported="true" kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
<classpathentry kind="output" path="WEB-INF/classes"/>
</classpath>其中
lasspathentry exported="true" kind="lib" path="WEB-INF/lib/commons-attributes-api-SNAPSHOT.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-attributes-compiler-SNAPSHOT.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-beanutils.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-collections-2.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-dbcp-1.2.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-digester.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-discovery.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-fileupload.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-lang-2.0.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-logging-1.0.3.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-pool-1.1.jar"/>
<classpathentry exported="true" kind="lib" path="WEB-INF/lib/commons-validator.jar"/>
是什么地方要用