ckeditor在jsp上增加图片下传功能(2)

//这后面加的参数分别是上传文件，图片和flash
			CKEDITOR.replace( 'context',{filebrowserUploadUrl : 'ckupload.do?type=file',   
				filebrowserImageUploadUrl : 'ckupload.do?type=image',   
				filebrowserFlashUploadUrl : 'ckupload.do?type=flash'  
		    });

package info.hellolihui.action;

import java.io.File;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

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

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;



public class CKUploadAction extends DispatchAction {

	//允许上传的文件后缀名
	private final String[] exts = new String[]{"gif","png","jpeg","jpg","bmp"}; 
	
	@Override
	public ActionForward unspecified(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		System.out.println("上传");
		
		ServletContext servletContext = request.getSession().getServletContext();
		
		// 设定上传文件路径
		String path = servletContext.getRealPath("/upload") + "/";
		
		String typeStr = request.getParameter("type");   
		//如果type为空则默认为上传文件
        if (typeStr == null) {   
            typeStr = "file";   
        } 
        path += typeStr;
		
        // 判断文件夹是否存在，不存在则创建，此时的path还未加上文件名，为http://127.0.0.1:8080/xx/upload的格式
        File dirTest = new File(path);   
        if (!dirTest.exists()) {   
            dirTest.mkdirs();   
        }   
       
        System.out.println(path);
		
        //使用Apache Common组件中的fileupload进行文件上传   
        FileItemFactory factory = new DiskFileItemFactory();   
        ServletFileUpload upload = new ServletFileUpload(factory);   
        
        // 文件名和文件真实路径   
        String newName = "";   
        String fileUrl = "";   
        String fileName = ""; //只有文件名
        try {   
            List items = upload.parseRequest(request);   
            Map fields = new HashMap();   
            Iterator iter = items.iterator();   
            while (iter.hasNext()) {   
                FileItem item = (FileItem) iter.next();   
                if (item.isFormField())   
                    fields.put(item.getFieldName(), item.getString());   
                else  
                    fields.put(item.getFieldName(), item);   
            }   
            // CEKditor中file域的name值是upload   
            FileItem uplFile = (FileItem) fields.get("upload");   
            // 获取文件名并做处理   
            String fileNameLong = uplFile.getName();   
            fileNameLong = fileNameLong.replace('\\', '/');   
            String[] pathParts = fileNameLong.split("/");   
            fileName = pathParts[pathParts.length - 1];   
            // 获取文件扩展名   
            String ext = getExtension(fileName);   
            // 设置上传文件名以时间命名
            fileName = new Date().getTime() + "." + ext;   
            // 获取文件名(无扩展名)   
            String nameWithoutExt = getNameWithoutExtension(fileName);   
            File pathToSave = new File(path, fileName);   
            fileUrl = path + "/" + fileName;   
            if (extIsAllowed(ext)) {   
                int counter = 1;   
                while (pathToSave.exists()) {   
                    newName = nameWithoutExt + "_" + counter + "." + ext;   
                    fileUrl = path + "/" + newName;   
                    pathToSave = new File(path, newName);   
                    counter++;   
                }   
                uplFile.write(pathToSave);   
            } else {   
                System.out.println("无效的文件类型： " + ext);   
            }   
        }catch (Exception ex) {   
           ex.printStackTrace();   
        }   
        PrintWriter out = response.getWriter();   

        // CKEditorFuncNum是回调时显示的位置，这个参数必须有   
        //不能存d:\这种地址,要url
		String url = "http://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath() + "/upload/" + typeStr + "/" + fileName;
        String callback = request.getParameter("CKEditorFuncNum");   
        out.println("<script type=\"text/javascript\">");   
        out.println("window.parent.CKEDITOR.tools.callFunction(" + callback   
                + ",'" + url + "',''" + ")");   
        out.println("</script>");   
        out.flush();   
        out.close();   

        
		return null;

	}

    /**  
	 * 获取文件名的方法  
	 */
	private static String getNameWithoutExtension(String fileName) {
		return fileName.substring(0, fileName.lastIndexOf("."));
	}

	/**  
	 * 获取扩展名的方法  
	 */
	private String getExtension(String fileName) {
		return fileName.substring(fileName.lastIndexOf(".") + 1);
	}

	/**  
	 * 判断扩展名是否允许的方法  
	 */
	private boolean extIsAllowed(String ext) {
		ext = ext.toLowerCase();
		List extList = Arrays.asList(this.exts);
		return extList.contains(ext)?true:false;
	}   


}

2 楼 fzlihui 2010-08-31  

sarin 写道

http://sarin.iteye.com/blog/599499
我们写的方法都好像啊，哈哈。
不过为什么不在XML中配置允许的扩展名呢？
写成Struts的Action，在应用中还得拦截请求吧。

我就是用你的方法稍微改了改测试，配置允许扩展名是我偷懒了 你的做法是对的