JSP 文件上传

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Java

JSP Servlet DAO SQL HTML

这些天做JSP 的网站，遇到一个上传文件的问题，经过查找，终于成功了，写成文章，与大家分享吧！

这是选择文件页面：

<%@ page contentType="text/html;charset=GBK"%>
<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>

<font size=5 color=#FF0000> <b>文件下载----使用jspsmart upload组件</b> </font>
<br>
<form action="downloadfile" method="post">
<p>下载文件的名称： <input type="text" name="downloadFileName" size="20"
maxlength="80"></p>
<input type="submit" value="下载">
</body>
</form>
</html>

这是一个Servlet：

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Calendar;
import java.util.Random;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jspsmart.upload.SmartUpload;

import connDB.ConnDB;
import dao.DbDAO;

public class ServletUpload extends HttpServlet {
private ServletConfig config;

final public void init(ServletConfig config) throws ServletException {
this.config = config;
}

protected void doGet(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {

  ConnDB conndb = new ConnDB();
  DbDAO dao = new DbDAO();

  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();
  try {
   mySmartUpload.initialize(config, request, response);
   mySmartUpload.upload();
   //for (int i = 0; i < mySmartUpload.getFiles().getCount(); i++) {
   // com.jspsmart.upload.File myfile = mySmartUpload.getFiles().getFile(i);
    com.jspsmart.upload.File myfile = mySmartUpload.getFiles().getFile(0);
    String fileName = myfile.getFileName();

    String othername = null;
    String littlename = myfile.getFileExt();
    Random rd = new Random();
    Calendar time = Calendar.getInstance();

    othername = String.valueOf(time.get(Calendar.YEAR))
      + String.valueOf(time.get(Calendar.MONTH))
      + String.valueOf(time.get(Calendar.DAY_OF_MONTH))
      + String.valueOf(time.get(Calendar.HOUR_OF_DAY))
      + String.valueOf(time.get(Calendar.MINUTE))
      + String.valueOf(time.get(Calendar.SECOND))+"."+littlename;
    myfile.saveAs("/upload/"+ othername,1);
    //mySmartUpload.SAVE_VIRTUAL;
    //count = mySmartUpload.save("/upload", 1);
    // count = mySmartUpload.save(null);
   //}

   String sql = "update car set url = '"+"upload/"+othername+"'";
   dao.addImg(sql);
    out.println("add success! <BR>");

    //out.println("add falure!!!!");

   conndb.close();
   out.println(count + " file uploaded.");
  } catch (Exception e) {
   out.println("Unable to upload the file.<br>");
   out.println("Error : " + e.toString());
  }
  out.println("<jsp:forward path ='success.jsp'>");
  out.println("</BODY>");
  out.println("</HTML>");
}

protected void doPost(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  // TODO Auto-generated method stub
  doGet(request, response);
}
}
For 循环用来进行多文件上传的。

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ASP 通用分页工具 | Eclipse开发经典教程：SWT布局(2)

2008-08-18 17:22
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