fileuploadaction.java

基于j2ee中structs写软件

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.struts.action;


import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;

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

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.yourcompany.struts.form.FileuploadForm;

/** 
 * MyEclipse Struts
 * Creation date: 11-05-2008
 * 
 * XDoclet definition:
 * @struts.action path="/fileupload" name="fileuploadForm" input="/fileupload.jsp" scope="request" validate="true"
 */
public class FileuploadAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 * @throws IOException 
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws IOException {
		    FileuploadForm fileuploadForm = (FileuploadForm) form;// TODO Auto-generated method stub
		    FormFile file=(FormFile) fileuploadForm.getFile();
		    HttpSession session=request.getSession();
		    String key=(String) session.getAttribute("key");
			String CONTENT_TYPE="text/html;charset=GB2312";
			response.setContentType(CONTENT_TYPE);
			PrintWriter out=response.getWriter();
	        if(file!=null){   
	            //上传路径   
	            String dir=request.getSession(true).getServletContext().getRealPath("/upload/"+key);   
	            OutputStream fos=null;   
	            try {   
	                fos=new FileOutputStream(dir+"/"+file.getFileName());   
	                fos.write(file.getFileData(),0,file.getFileSize());   
	                fos.flush();   
	            } catch (Exception e) {   
	                // TODO Auto-generated catch block   
	                e.printStackTrace();   
	            }finally{   
	                try{   
	                fos.close();   
	                }catch(Exception e){}   
	            }   
			    out.println("<script language=javascript>alert('文件上传成功!')");
			    out.println("location.href='fileupload.jsp'</script>");
	        }
	        else{
	        	out.println("<script language=javascript>alert('请选择要上传的文件!')");
	        	out.println("location.href='fileupload.jsp'</script>");
	        }
            return null;
	}
}