import org.apache.tomcat.util.http.fileupload.DiskFileUpload;
在我的 Eclipse 中说 import org.apache.tomcat.util.http.fileupload.DiskFileUpload 无法解析。甚至导入jar commons-fileupload-1.2.2
import org.apache.tomcat.util.http.fileupload.FileItem;
import org.apache.tomcat.util.http.fileupload.FileUpload;
import org.apache.tomcat.util.http.fileupload.FileUploadException;
但以上三个不会给出错误..为什么?