ringentityaction.java

一个免费wap站

package com.eline.wap.resource.struts;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

import com.eline.wap.common.util.AppKeys;
import com.eline.wap.common.util.AppLogger;
import com.eline.wap.common.util.AppSettings;
import com.eline.wap.common.util.StringUtils;
import com.eline.wap.resource.client.RingHelper;
import com.eline.wap.resource.model.RingEntity;

public class RingEntityAction extends Action {

	private static final int ACTION_CREATE	= 0;
	private static final int ACTION_DELETE	= 2;

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		
		System.out.println("RingEntityAction.execute()");
		System.out.println("ActionForm=" + form);

		boolean isOK = false;
		int webAction = StringUtils.getInt(request.getParameter("webAction"), -1);

		if (form instanceof RingEntityForm) {
			RingEntityForm actionForm = (RingEntityForm) form;
			if (webAction == ACTION_CREATE) {
				System.out.println("ring entity create.");
				isOK = doCreate(actionForm, request, response);
			} else if (webAction == ACTION_DELETE) {
				isOK = doDelete(actionForm, request, response);
			}
		}

		String strMsg = isOK ? "操作成功" : "操作失败";
		request.setAttribute("message", strMsg);

		return mapping.findForward(isOK ? "success" : "failure");
	}

	private boolean doCreate(RingEntityForm form, HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		try {
			RingEntity item = new RingEntity();
			
			item.setRingId(form.getParentId());
			item.setDimension(form.getDimension());
			
			String filePath = uploadRingFile(form.getFileRing());
			if (filePath == null)
				return false;

			String ringMime = filePath.substring(filePath.lastIndexOf(".") + 1);
			System.out.println("RingEntityAction.doCreate().ringMime=" + ringMime);
			item.setRingMime(ringMime);
			item.setFilePath(filePath);
			item.setFileSize(form.getFileRing().getFileSize());
			

			RingHelper reh = new RingHelper();
			reh.createRingEntity(item);

		} catch (Exception e) {
			AppLogger.error("RingEntityAction.doCreate() Exception: " + e.getMessage());
			return false;
		}
		return true;
	}

	private boolean doDelete(RingEntityForm form, HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		return false;
	}
	
	private String uploadRingFile(FormFile file) {
		if (file == null || file.getFileSize() < 1)
			return null;

		try {
			InputStream stream = file.getInputStream();

			// 获取文件扩展名并判断其有效性
			String[] sp = file.getFileName().split("\\.");
			String ext = null;
			if (sp.length > 1) {
				ext = sp[sp.length - 1].toLowerCase();
				if (!ext.equals("mmf") && !ext.equals("mid")
						&& !ext.equals("pmd"))
					return null;
			}

			// 生成上传目录，如果不存在则创建
			GregorianCalendar calendar = new GregorianCalendar();
			String virtualPath = AppSettings.getInstance().getProperty(
					AppKeys.UPLOAD_ROOT)
					+ "/rings/" + calendar.get(Calendar.YEAR)
					+ "-" + (calendar.get(Calendar.MONTH) + 1)
					+ "-" + calendar.get(Calendar.DAY_OF_MONTH);
			
			System.out.println("virtualPath=" + virtualPath);

			String physicalPath = this.getServlet().getServletContext().getRealPath(virtualPath);

			File dir = new File(physicalPath);
			if (!dir.exists())
				dir.mkdir();

			// 生成文件名
			String fileName = "ring_" + calendar.get(Calendar.HOUR)
					+ calendar.get(Calendar.MINUTE)
					+ calendar.get(Calendar.SECOND)
					+ calendar.get(Calendar.MILLISECOND) + "." + ext;

			physicalPath = this.getServlet().getServletContext().getRealPath(
					virtualPath + "/" + fileName);

			OutputStream bos = new FileOutputStream(physicalPath);
			int bytesRead = 0;
			byte[] buffer = new byte[8192];
			while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
				bos.write(buffer, 0, bytesRead);
			}
			bos.close();
			stream.close();

			// 返回相对路径名
			String filePath = "/" + calendar.get(Calendar.YEAR) + "-"
					+ (calendar.get(Calendar.MONTH) + 1) + "-"
					+ calendar.get(Calendar.DAY_OF_MONTH) + "/" + fileName;

			AppLogger.info("RingEntityAction.uploadRingFile() The file has been written to \"" + filePath + "\"");
			
			System.out.println("filePath=" + filePath);
			return filePath;

		} catch (FileNotFoundException e) {
			AppLogger.error("RingEntityAction.uploadRingFile() FileNotFoundException:" + e.getMessage());
			return null;
		} catch (IOException e) {
			AppLogger.error("RingEntityAction.uploadRingFile() IOException:" + e.getMessage());
			return null;
		}
	}
}