Apache 文件上传

wojkxlq · 发表于 2016-12-30 09:18:14

jsp code
　　======================
<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>

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

<script type="text/javascript" src="js/jsimages.js"></script>
<link rel="stylesheet" href="css/cssimages.css" type="text/css"></link>
</head>

<body>
    <form name="formFileUpload" method="post" action="/Import_java/servlet/svltFileUpload" enctype="multipart/form-data">
<table width="100%" border="1">
    <tr>
      <th colspan="3"><strong>文件上传</strong></th>
    </tr>
    <tr>
      <td> </td>
      <td height="187">


            <div id="preview_wrapper">
        <div id="preview_fake">
            <img id="preview" src="" /> <img id="preview_size_fake" />
        </div>

    </div>


</br>
文件显示标题<input type="text" name="fileTitle">
      </td>
      <td> </td>
    </tr>
    <tr>
      <td> </td>
      <td>
<input id="upload_img" name="filetpye" type="file" size="3" onchange="onUploadImgChange(this)" />
      </td>
      <td> </td>
    </tr>
    <tr>
      <td> </td>
      <td>
            <input type="submit" name="sbtFileUpload" value="上传" />
    </td>
      <td> </td>
    </tr>
</table>
</form>
</body>
</html>
　　========================servlet code========================
package svlt;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
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.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class svltFileUpload extends HttpServlet {

    private String savaPath;
    private ServletContext sc;

    public svltFileUpload() {
        super();
    }

    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

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

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        DiskFileItemFactory factory=new DiskFileItemFactory();
        ServletFileUpload fileupload=new ServletFileUpload(factory);
        String fileTitle="";
        try {
            List allList=fileupload.parseRequest(request);
            Iterator it=allList.iterator();
            while(it.hasNext()){
                FileItem item=(FileItem)it.next();
                if(item.isFormField()){
                    if(item.getFieldName().equals("fileTitle")){
                        fileTitle=item.getString("GB2312");
                        System.out.println(fileTitle);
                    }
                }else{
                    if((item.getName()!=null)&&(!item.getName().equals(""))){
                        File itemfile=new File(item.getName());

                        String filename=itemfile.getName();
                        String filetype=filename.substring(filename.lastIndexOf(".")).toLowerCase();

                        Date dt=new Date();
                        SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddHHmmss");
                        String days=sdf.format(dt.getTime());
                        String savaName=days+filetype;
                        System.out.println("文件名:"+savaName);

                        File sava=new File(sc.getRealPath("/")+savaPath,savaName);

                        item.write(sava);
                        System.out.println("上传成功");
                    }
                }
            }
        } catch (FileUploadException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public void init(ServletConfig config) throws ServletException {
        // Put your code here
        savaPath=config.getInitParameter("savaPath");
        sc=config.getServletContext();
    }

}
　　=========================web.xml code===========================
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>svltFileUpload</servlet-name>
    <servlet-class>svlt.svltFileUpload</servlet-class>
    <init-param>
        <param-name>savaPath</param-name>
        <param-value>headimages</param-value>
    </init-param>
</servlet>

<servlet-mapping>
    <servlet-name>svltFileUpload</servlet-name>
    <url-pattern>/servlet/svltFileUpload</url-pattern>
</servlet-mapping>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

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