一个使用jspSmartUpload控件上传文件的例子

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一个使用jspSmartUpload控件上传文件的例子

package cn.edu.hbcit.ips.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
import javax.servlet.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import cn.edu.hbcit.ips.bean.ConnBean;
import cn.edu.hbcit.ips.bean.FileOperate;
import com.jspsmart.upload.*;
public class ExcelUpload extends HttpServlet {
	  private ServletConfig config;
	  private static final String CONTENT_TYPE = "text/html; charset=GB2312";
	  protected final Logger log = Logger.getLogger(ExcelUpload.class.getName());
	  
	/**
	 * Constructor of the object.
	 */
	public ExcelUpload() {
		super();
	}
	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}
	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
		
	}
	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("gb2312");
		int countFile = 0;
		String realPath = "";
		String oldFilename ="";
	    SmartUpload su = new SmartUpload(); //实例化jspSmartUpload
	    su.initialize(config, request, response);// 初始化SmartUpload
	    su.setAllowedFilesList("xls"); //允许上传的文件类型(中间用,隔开)
	    su.setMaxFileSize(1 * 1024 * 1024); //声明上传文件最大容量
	    log.debug("Uploading...");
	      try{
	          su.upload();
	          com.jspsmart.upload.File file = su.getFiles().getFile(0);
	          oldFilename = file.getFileName();//得到原文件名
	          log.debug("原文件名为："+oldFilename);
	          FileOperate fo = new FileOperate();
	          
	          if(file.getFileExt().equalsIgnoreCase("xls")){//判断文件扩展名是否为xls
	        	//将文件另存为
		          if (!file.isMissing()) {
		        	  realPath = request.getRealPath("/")+"UserFiles//";
//		        	  su.save(realPath);
		        	  realPath += fo.generateRandomFilename()+"xls";
		        	  log.debug("当前路径是："+realPath);
		        	  
		        	  file.saveAs(realPath, su.SAVE_PHYSICAL);
			          log.debug("上传文件大小："+file.getSize());
		          }
	          }
	          
	        }catch(Exception e){
	          log.error(e.getMessage());
	        }
	}
	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init(ServletConfig config) throws ServletException {
		this.config = config;
	}
}