怎么導入apacheiocommons？

importorg.apache.tomcat.util.http.fileupload.FileItem;importorg.apache.tomcat.util.http.fileupload.FileItemFactory;importorg.apache.tomcat.util.http.fileupload.FileUploadException;importorg.apache.tomcat.util.http.fileupload.disk.DiskFileItemFactory;importorg.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload；就是下面出現紅線，不知道如何導入