fileutils.java

版本信息：Jaoso新闻文章发布系统 0.9.1beta1 原POPTEN新闻发布系统现更名为Jaoso,不兼容popten,目前不提供popten升级Jaoso的程序.

package jaoso.framework.util;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;


/**
 * @author Edgeloner
 * @since 2004-06-23
 */
public class FileUtils {

    //~ Static fields/initializers =============================================

    /**  DOCUMENT ME! */
    private static Log log = LogFactory.getLog(FileUtils.class);

    /**  DOCUMENT ME! */
    private static String filePath = "";

    static {

        String path = FileUtils.class.getResource("/log4j.properties")
                                     .getPath();
		        path = path.substring(1, path.length());
        //for linux or unix
        if (!path.substring(0, 1)
                     .equals("/")
                && !path.substring(1, 2)
                            .equals(":")) {
            path = "/" + path;
        }
        filePath = path.substring(0, path.indexOf("WEB-INF")) + "pages/upload/";
    }

    //~ Methods ================================================================

    /**
     * @param string file path
     */
    public static void setFilePath(String string) {

        filePath = string;
    }

    /**
     * DOCUMENT ME!
     *
     * @param args DOCUMENT ME!
     */
    public static void main(String[] args) {

        System.out.println(FileUtils.filePath);
    }

    /**
     * DOCUMENT ME!
     *
     * @param dir DOCUMENT ME!
     */
    public static void removeDir(String dir) {

        File f = new File(filePath + dir);
        File tmp;

        if (f.exists()) {

            String[] tmps = f.list();

            for (int i = 0; i < tmps.length; i++) {

                tmp = new File(filePath + dir + "/" + tmps[i]);
                tmp.delete();
            }

            f.delete();
        }
    }

    /**
     * DOCUMENT ME!
     *
     * @param is DOCUMENT ME!
     * @param fileName DOCUMENT ME!
     */
    public static void writeFile(InputStream is, String fileName) {

        log.info("write file");

        OutputStream os = null;

        if (fileName.indexOf("/") != -1) {

            File f = new File(filePath
                    + fileName.substring(0, fileName.indexOf("/")));

            if (!f.exists()) {

                f.mkdirs();
            }
        }

        try {

            log.info("write file" + filePath + fileName);
            os = new FileOutputStream(filePath + fileName);

            int bytesRead = 0;
            byte[] buffer = new byte[8192];

            while ((bytesRead = is.read(buffer, 0, 8192)) != -1) {

                os.write(buffer, 0, bytesRead);
            }
        } catch (FileNotFoundException e) {

            log.error("write file error: file not found \n" + e);
        } catch (IOException e) {

            log.error("write file error: " + e);
        }
    }
}