UploadDialog使用完整代码

我不是女神ヾ 2024-02-17 14:40 9阅读 0赞

1.导入uploaddialog需要的js库

附上下载地址，里面有所用到的方法的介绍

http://www.max-bazhenov.com/dev/upload-dialog-2.0/

1.首先创建dialog对象

var uploadDialog = Ext.create("Ext.ux.UploadDialog.Dialog", {

url:"uploadexl.do", //处理请求servlet
    	shadow : true,
    	post_var_name:"uploadFiles", 
    	draggable:true, 
    	resizable:true, 
    	constraintoviewport:true, 
    	modal:true, 
    	reset_on_hide:false, 
    	allow_close_on_upload:false, 
    	upload_autostart:false, 
    	base_params:{}, 
    	post_var_name:"file", 
    	permitted_extensions:["xls"], //允许上传文件后缀
    });

2.编写各种状态响应的操作方法，并注册

onUploadSuccess = function (dialog, filename, resp_data, record) {
    		Ext.Msg.alert("提示","文件已经上传完毕!");
    		store.load();
    	};
    	
    onUploadFailed = function (dialog, filename, resp_data, record) {
    		Ext.Msg.alert(resp_data.data);
    	};
    	
    onUploadComplete = function (dialog) {
    		Ext.Msg.alert("提示","文件已经上传完毕!");
    		uploadDialog.hide();
    		store.load();
    	};
    	
    uploadDialog.on("uploadsuccess", onUploadSuccess);
    uploadDialog.on("uploadfailed", onUploadFailed);
    uploadDialog.on("uploaderror", onUploadFailed);
    uploadDialog.on("uploadcomplete", onUploadComplete);

3.编写uploadservlet，需要用到另外的jar包进行上传文件的读取，可以搜索org.apache.commons.fileupload进行下载导入即可。

package view;
    
    import java.io.File;
    import java.io.IOException;
    import java.util.Iterator;
    import java.util.List;
    
    import javax.servlet.ServletConfig;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.commons.fileupload.FileItem;
    import org.apache.commons.fileupload.disk.DiskFileItemFactory;
    import org.apache.commons.fileupload.servlet.ServletFileUpload;
    
    import data.UserManagerDAO;
    
    public class UploadServlet extends HttpServlet {
    	private static final long serialVersionUID = 1L;
    	public static String uploadPath = "";
    
    	public void init(ServletConfig config) throws ServletException {
    		uploadPath = config.getServletContext().getRealPath("/") + "upload/";
    		super.init(config);
    	}
    
    	@SuppressWarnings("deprecation")
    	protected void doPost(HttpServletRequest request,
    			HttpServletResponse response) throws ServletException, IOException {
    		request.setCharacterEncoding("utf-8");
    		response.setContentType("text/html;charset=UTF-8");
    		try {
    			DiskFileItemFactory factory = new DiskFileItemFactory();
    			factory.setSizeThreshold(4096);
    			File path = new File(uploadPath);
    			if (!path.exists()) {
    				path.mkdir();
    			}
    			factory.setRepository(path);
    
    			ServletFileUpload upload = new ServletFileUpload(factory);
    			upload.setSizeMax(2147483647L);
    			List<FileItem> fileItems = null;
    			fileItems = upload.parseRequest(request);
    			Iterator<FileItem> i = fileItems.iterator();
    			while (i.hasNext()) {
    				FileItem fi = (FileItem) i.next();
    				String fileName = fi.getName();
    				int start = fileName.lastIndexOf("\\");
    				String paths = fileName.substring(start + 1, fileName.length());
    				System.out.println(fileName);
    				fi.write(new File(uploadPath + paths));
    
    			}
    			File file = new File(uploadPath);
    			uploadPath = uploadPath.replaceAll("/", "\\\\");
    			String test[];
    			test = file.list();
    			for (int b = 0; b < test.length; b++) {
    				String getfilename = uploadPath + test[b];
    				getfilename = getfilename.replaceAll("\\\\", "/");
    				if (getfilename.endsWith(".xls")) {
    					UserManagerDAO.saveExcel(getfilename);
    				}
    			}
    			response.getWriter().write("{success:true,message:'文件上传成功'}");
    		} catch (Exception e) {
    			System.out.println(e.getMessage() + " : " + e.getCause());
    			response.getWriter().write("{success:false,message:'error...'}");
    		}
    	}
    }

4.完毕！