如何删除eclipse中不需要的jar文件和其他库？

Question

在我的一些项目中或者可能在 Eclipse 中的某个地方，有一些我不再使用它们的 jar 文件，现在每次我构建时控制台都会显示此警告，即使它与当前问题无关：

WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.CalendarTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns582:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.ColumnTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.ColumnsHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns621:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.DataFilterSliderTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.DataScrollerTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns676:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.DragSupportHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.DropDownMenuTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns691:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.DropSupportHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.FileUploadTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns721:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.GraphValidatorHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns814:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.PageTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.Paint2DTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.PanelMenuGroupTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.webapp.taglib.AjaxComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.ScrollableDataTableTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns886:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.SimpleTogglePanelTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns900:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.RowKeyConverterComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.SuggestionBoxTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.TabPanelTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.HtmlToolTipTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.TreeTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.richfaces.taglib.TreeNodeTagHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.taglib.html.facelets.ActionParamHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns1004:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.webapp.taglib.AjaxComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.webapp.taglib.AjaxComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns1019:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.webapp.taglib.AjaxComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.taglib.html.facelets.IncludeHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class '[ns1044:handler-class: null]' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.taglib.html.facelets.MediaOutputHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.webapp.taglib.AjaxComponentHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.taglib.html.facelets.AjaxPushHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.
WARNING: JSF1029:  Application is versioned at 2.0 (either explicitly by the version of /WEB-INF/faces-config.xml or the lack of a /WEB-INF/faces-confg.xml), however class 'org.ajax4jsf.taglib.html.facelets.AjaxSupportHandler' depends on a legacy facelet class.  The facelet artifact represented by this class will not be registered.

How can i摆脱这个库并避免出现此消息。这也使得 Eclipse 构建我的项目变慢。

Answer 1

问题解决了。要删除我不需要的所有库，我只需要转到 Eclipses 属性并找到构建路径。当我刚刚从 lib 文件夹中删除它们时，它们并没有从构建路径中删除。