文件上传—jspSmartUpload组件

时间：2021-06-09 22:07:51

1、jsp简单页面

<%@ page language="java" contentType="text/html; charset=utf-8"%>
<html>
<head>upload文件上传</head>
<body>
<%-- "<%=request.getContextPath()%>/UploadServlet"--%>
<form action="UploadDemo/UploadServlet" method="post" enctype="multipart/form-data">
        文件描述:<input type="text" name="desc" size="20" maxlength="80">
        文件名称:<input type="file" name="file" size="20" maxlength="80">
<input type="submit" value="上传">
</form>
</body>
</html>

2、UploadServlet

package UploadDemo;

import java.io.IOException;
import java.io.PrintWriter;

import javax.security.auth.message.callback.SecretKeyCallback.Request;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;

/**
 * Servlet implementation class UploadServlet
 */
public class UploadServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;


    protected void doPost(HttpServletRequest request, HttpServletResponse response) 
            throws ServletException, IOException {
        response.setCharacterEncoding("utf-8");
        PrintWriter out=response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("<hr>");
out.println("执行......");
        SmartUpload mySmartUpload=new SmartUpload();
        int count=0; //上传文件数量
        try{
            //初始化工作
            System.out.println("执行中-----");
            mySmartUpload.initialize(this.getServletConfig(),request,response);
            //限制文件上传最大长度
            mySmartUpload.setMaxFileSize(50*1024*1024);
            //设置文件上传的文件，仅允许doc与txt文件
            mySmartUpload.setAllowedFilesList("doc,txt");
            mySmartUpload.upload();
            //获得上传的文件
            File myfile=mySmartUpload.getFiles().getFile(0);
            //获得上传文件的名字
            String filename=myfile.getFileName();
            //保存文件的目录
            count=mySmartUpload.save("F:\\");
            //获得文件的描述信息
            Request re =(Request) mySmartUpload.getRequest();
            String desc=((ServletRequest) re).getParameter("desc");
out.println(count+"file uploaded.<br>");
out.println("file description:"+desc); 
        }catch(Exception e){
out.println("Unable to upload the file!!");
out.println("Error:"+e.toString());
        }
out.println("</body>");
out.println("</html>"); 
    }
}
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