uploadbiz.java

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package com.yhcms.manage.upload.biz;

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

import org.apache.log4j.Logger;
import org.apache.struts.upload.FormFile;

import com.yhcms.db.DBConnException;
import com.yhcms.manage.upload.action.UpLoadAction;
import com.yhcms.manage.upload.bean.UpFile;
import com.yhcms.manage.upload.dao.UpFileDaoIm;
import com.yhcms.manage.upload.itface.UpFileDao;
/**
 * <p>Title:系统上传附件BIZ</p>
 * <li>系统上传附件</li>
 * <br><b>CopyRight: yyhweb[由由华网]</b>
 * @author stephen
 * @version YH-2.0
 */
public class UpLoadBiz{
	
	static Logger yhlog = Logger.getLogger(UpLoadAction.class.getName());
	
	public static boolean writeFile(FormFile curFile, String filePath) {
		boolean noExcp = true;
		InputStream input = null;
		OutputStream output = null;
		try {
			input = curFile.getInputStream();
			output = new FileOutputStream(filePath);
			int size = 0;
			byte temp[] = new byte[8192];
			while ((size = input.read(temp, 0, 8192)) != -1)
				output.write(temp, 0, size);
			temp = (byte[]) null;
		}
		catch (Exception e) {
			noExcp = false;
			e.printStackTrace();
		}
		finally {
			try {
				if (input != null) {
					input.close();
					input = null;
				}
				if (output != null) {
					output.close();
					output = null;
				}
				if (curFile != null) {
					curFile.destroy();
					curFile = null;
				}
			}
			catch (Exception e) {
				noExcp = false;
				e.printStackTrace();
			}

		}
		return noExcp;
	}

	public static boolean delFile(String filePath) {
		try {
			File delfile = new File(filePath);
			boolean temp = false;
			if (delfile.exists())
				temp = delfile.delete();
			delfile = null;
			return temp;
		}
		catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}
	
	public static void uploadDao(UpFile curFile){
		boolean flag = false;
		UpFileDao fileDao = UpFileDaoIm.getInstance();
			try {
				flag = fileDao.uploadFile(curFile);
			}
			catch (DBConnException e) {
				yhlog.warn("Add a upload file information,throw an Exception!File name is:"+curFile.getFilename());
			}
			if(!flag){
				yhlog.warn("Add a upload file information unsuccessfully.File name is:"+curFile.getFilename());
			}
		return ;
	}
	
	public static void deleteDao(int fileId){
		boolean flag = false;
		UpFileDao fileDao = UpFileDaoIm.getInstance();
		try {
			flag = fileDao.delFile(fileId);
		}
		catch (DBConnException e) {
			yhlog.warn("Delete a upload file information,throw an Exception!File id is:"+fileId);
		}
		if(!flag){
			yhlog.warn("Delete a upload file information unsuccessfully.File id is:"+fileId);
		}
		return ;
	}
}