文件上传1

来源：互联网发布：太阳能无网络监控器编辑：程序博客网时间：2024/05/16 01:53

这种方式可以上传图片，也可以上传音频文件，当然我写的代码，显得笨拙，不过功能上是有的，其实这样的代码在网上是随处可以见到的，我也参考的，在项目里应用

首先要有这两个jar包

commons-fileupload-1.3.jar和commons-io-1.2.jar包

=======================================servlet============================================

package com.cn.xiaw.reply.action;
import java.io.File;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import java.util.HashMap;
import java.util.Map;
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.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.alibaba.fastjson.JSON;
import com.cn.xiaw.entry.Reply;
import com.cn.xiaw.entry.Talk;
import com.cn.xiaw.service.ReplyService;
import com.cn.xiaw.service.ReplyServiceImpl;
import com.cn.xiaw.service.TalkService;
import com.cn.xiaw.service.TalkServiceImpl;
import com.cn.xiaw.service.UserSerice;
import com.cn.xiaw.service.UserServiceImpl;
import com.cn.xiaw.util.CutPicture;
import com.cn.xiaw.util.HttpUtil;
import com.cn.xiaw.util.ImgUitl;
import com.cn.xiaw.util.PushOne;
public class InsertReplyAction extends HttpServlet {
   ReplyService replyservice = new ReplyServiceImpl();
   UserSerice userservice = new UserServiceImpl();
   TalkService talkservice=new TalkServiceImpl();
   @Override
   public void service(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException {
       response.setContentType("application/html");
       try {
            String qid=request.getParameter("qid");
           String uid=request.getParameter("uid");
           String fid=request.getParameter("fid");
           String uname=new String(request.getParameter("uname").getBytes("iso-8859-1"),"UTF-8");
           String content=new String(request.getParameter("content").getBytes("iso-8859-1"),"UTF-8");
           long otherid=Long.parseLong(request.getParameter("otherid"));
           String filepath=request.getParameter("filepath");
           String othername=new String(request.getParameter("othername").getBytes("iso-8859-1"),"UTF-8");
           Map <String,String> filemap = fileupdlod(request);
           long time=new Date().getTime();
           Reply reply=new Reply();
           reply.setQid(Long.parseLong(qid));
           reply.setFid(Long.parseLong(fid));
           reply.setContent(content);
           reply.setUid(Long.parseLong(uid));
           reply.setUname(uname);
            reply.setTime(new Timestamp(time));
            reply.setFilepath(filepath);
            reply.setOtherid(otherid);
            reply.setOthername(othername);
           reply.setReplyfilepath(filemap.get("replyfile"));
           reply.setVoicepath(filemap.get("replyvoicefile"));
           reply.setSmallreplyfilepath(filemap.get("smallreplyfile"));
           long counts=replyservice.addReplyjdbc(reply);//
       /*   String devicetoken=userservice.getDevicetoken(otherid);//获取的是要发送的设备token
           Map<String, Object> map0 = new HashMap<String, Object>();
           map0.put("qid", qid);
           map0.put("rid", "");
           map0.put("type", 0);//0表示对问题的直接回答
             String text=   JSON.toJSONString(map0).toString();
           //此时要发送消息一条
           PushOne pushone=new PushOne(devicetoken,(int)counts, text);
           pushone.start();*/
           Map<String, Object> map = new HashMap<String, Object>();
           if(counts==0){
               map.put("message", "false");
           }else{
           map.put("message", "success");
           }
           HttpUtil.http(map, response);
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
   public Map <String,String> fileupdlod(HttpServletRequest request) {
       Map <String,String>map=new HashMap<String,String>();
       String str = "";
       String smallstr = "";//缩略图
       // 为解析类提供配置信息
       DiskFileItemFactory factory = new DiskFileItemFactory();
       // 创建解析类的实例
       ServletFileUpload sfu = new ServletFileUpload(factory);
       // 开始解析
       sfu.setFileSizeMax(-1);
       // 每个表单域中数据会封装到一个对应的FileItem对象上
       try {
           List<FileItem> items = sfu.parseRequest(request);
           UUID uuidp = UUID.randomUUID();
           // 区分表单域
           for (int i = 0; i < items.size(); i++) {
               FileItem item = items.get(i);
               // isFormField为true，表示这不是文件上传表单域
               if (!item.isFormField()) {
                   ServletContext sctx = getServletContext();
                   // 获得存放文件的物理路径
                   UUID uuid = UUID.randomUUID();
                   // upload下的某个文件夹得到当前在线的用户找到对应的文件夹
                   String paths = sctx.getRealPath("/reply");
                   File file = new File(paths+"/"+uuidp);
                   file.mkdirs();
                   File file1 = new File(paths+"/"+uuidp+"/1");
                   file1.mkdirs();


                   // 获得文件名
                   String fileName = item.getName();
                   String fi = fileName.replace("E:", "");
                   // 该方法在某些平台(操作系统),会返回路径+文件名
                   String[] fileNames = fi.split("\\.");
                   if (fileNames.length > 1) {
                       fi = uuid + "." + fileNames[1];
                       fileName = fi.substring(fi.lastIndexOf("/") + 1);
                       File files = new File(paths+"/"+uuidp + "/" + fileName);
                       if (!files.exists()) {
                           if(!fileName.contains("caf")){
                           item.write(files);
                           str = pinjie(str, "reply/"+uuidp + "/" + fileName);
                           map.put("replyfile", str);
                           ImgUitl.makeSamll(files,paths+ "/"+uuidp + "/" + fileName,640);//生成缩略图-----给定缩略图的高100，按照原比例大小来生成新图片
                           ImgUitl.makeSamll(files, paths+"/"+uuidp+"/1/"+fileName,250);//生成缩略图
                           smallstr = pinjie(smallstr, "reply/"+uuidp + "/1/" + fileName);
                           //   ImgUitl.makeSamll(files, paths+"/"+uuidp+"/1/2/"+fileName,84);//生成缩略图-----给定缩略图的高100，按照原比例大小来生成新图片
                           CutPicture.cutCenterImage( paths+"/"+uuidp+"/1/"+fileName, paths+"/"+uuidp+"/1/"+fileName, 250, 250);
                           map.put("smallreplyfile", smallstr);
                           }else {
                               File voicefile = new File(paths+"/voice/"+uuidp);
                               voicefile.mkdirs();
                               File voicefiles = new File(paths+"/voice/"+uuidp+ "/" + fileName);
                               item.write(voicefiles);
                               map.put("replyvoicefile", "reply/voice/"+uuidp+ "/" + fileName);
                           }
                       }
                   }
               }
           }
       } catch (Exception e) {
       }
       return map;
   }
   public String pinjie(String str, String filename) {
       if (!str.equals("")) {
           str = str + "%" + filename;
       }else    if (str.equals("")) {
           str = filename;
       }
       return str;
   }
}

WEB.XML配置就不粘了

===========================================JSP==============================================================================

<div style="display: ;height: 30px" >
<form action="../Xiawan_01/fileupload?id=<%=ids %>" method="post" enctype="multipart/form-data">
<input type="file" name="filename">
<input type="submit" value="上传" id="sub1">
</form>

其实上面的jar就是按着这样的jsp页面上提交form表单的原理开发的enctype="multipart/form-data" 而苹果手用他的传送数据方式，同样可以接受，我这里就是和苹果手机对接的程序，而jsp页面的上传form,仅仅是一个简单的测试而已

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