文件上传

最新推荐文章于 2024-08-02 16:51:08 发布

diao21

最新推荐文章于 2024-08-02 16:51:08 发布

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分类专栏： Servlet 文章标签： jspsmart 文件上传

本文链接：https://blog.youkuaiyun.com/diao21/article/details/84526502

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本文介绍如何使用jspSmartUpload组件实现文件上传功能。通过一个简单的Servlet示例展示了如何处理用户上传的文件，并将其保存到指定路径。文章包含了完整的代码实现。


<%@ page language="java" pageEncoding="gbk"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    <title>file upload</title>

  </head>

  <body>
    <font size="5" color="#FF0000">
    	<b>文件上传 — 使用jspsmart upload组件</b>
    </font><br>
    <form name="selectfile" enctype="multipart/form-data" method="post" action="servlet/servletUpload">
    <p>文件名称：
    <input type="file" name="ulfile" size="20" maxlength="80">
    </p>
    <p>存储路径：
    <input type="text" name="PATH" size="30" maxlength="50">
    </p>
    <p>
     <input type="submit" value="上传">
     <input type="reset" value="清除">
    </p> 
    </form>
  </body>
</html>


package com.bjsxt;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.jspsmart.upload.*;

public class servletUpload extends HttpServlet {

	private static final long serialVersionUID = 1L;

	private ServletConfig config;
	/**
	* 初始化Servlet
	*/
	final public void init(ServletConfig config) throws ServletException {
		this.config = config;
	}
	/**
	* 处理GET请求
	*/
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter out = response.getWriter();
		out.println("<HTML>");
		out.println("<BODY BGCOLOR='white'>");
		out.println("<H1>jspSmartUpload : Servlet Sample</H1>");
		out.println("<HR><BR>");
		out.println("The method of the HTML form must be POST.");
		out.println("</BODY>");
		out.println("</HTML>");
	}
	/**
	* 响应POST请求
	*/
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {	
		PrintWriter out = response.getWriter();
		out.println("<HTML>");
		out.println("<BODY BGCOLOR='white'>");
		out.println("<H1>jspSmartUpload : Servlet Sample</H1>");
		out.println("<HR>");

		// 变量定义
		int count=0;
		SmartUpload mySmartUpload = new SmartUpload();

		String uploadPath = mySmartUpload.getRequest().getParameter("PATH");

		if(uploadPath == null || "".equals(uploadPath)) {
			uploadPath = "C:\\apache-tomcat-6.0.16\\webapps\\ServletTest\\upload";
		}

		try {
			// 初始化
			mySmartUpload.initialize(config,request,response);
			// 上载
			mySmartUpload.upload();
			// 保存上载文件到指定目录
			// PATH为form表单提交过来的
			count = mySmartUpload.save(uploadPath);
			// 显示处理结果
			out.println(count + " file uploaded.");
		} catch (Exception e){
			out.println("Unable to upload the file.<br>");
			out.println("Error : " + e.toString());
		}
		out.println("</BODY>");
		out.println("</HTML>");
    }
}