jquery ajax异步上传

来源：互联网发布：如何看懂软件编辑：程序博客网时间：2024/06/01 08:27

找了好久终于在网上找到了ajax异步上传文件的方法，不过网上大多数是php的，我改为struts2写的大同小异，希望对学习java的人有一定的帮助。我上传的是音乐文件。ajaxfileupload.js这个js文件是主要文件，一定要导入。
jsp页面，其中我还做了div的隐藏*****************************
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+
":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
　<base href="<%=basePath%>">
　<title>Uploadify</title>
<style type="text/css">
#div1{
color: #000000; font-size: 12px;
    border: 0px solid #74B3DC;
    color: #000;
    background: #fff;
display:none;
}
</style>
　<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
      <script type="text/javascript" src="js/ajaxfileupload.js"></script>
      
      <script type="text/javascript">
          function ajaxFileUpload(){
               $.ajaxFileUpload(
                   {
                url:'uploadAction.action',            //需要链接到服务器地址
                secureuri:false,
                fileElementId:'upload',                     //文件选择框的id属性
                dataType: 'json',                           //服务器返回的格式
                success: function (data, status)            //相当于java中try语句块的用法
               {
               // alert(data);
                   var ss =data;
                  // alert(ss);
                   var mp3Name = ss.split(";");
                    for(var i=0; i<mp3Name.length;i++) {
                      //alert(mp3Name[i]);
                      $('#songName').val(mp3Name[0]);
                      $('#songsiger').val(mp3Name[1]);
                    }

                    $('#result').html('添加成功');
                },
                error: function (data, status, e)            //相当于java中catch语句块的用法
                {
                    //alert("222.");
                    $('#result').html('添加失败');
                }
            }

               );
            target=document.getElementById('div1');
            if (target.style.display=="block"){
                target.style.display="none";
            } else {
                target.style.display="block";
            }
          }
      </script>

</head>
<body>
      <form method="post" action="uploadAction.action" enctype="multipart/form-data">
        <input type="file" id="upload" name="upload"/>
        <input type="button" value="上传文档" onclick="ajaxFileUpload()"/>
    <div id="result"></div>
        <div id="div1">
        歌曲<input type="text" id="songName" name="songName" value="">
       歌手 <input type="text" id="songsiger" name="songName" value="">
        <input type="button" value="提交文档信息" />
       </div>
    </form>

</body>
</html>
action上传后台代码*************************************
package action;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.json.annotations.JSON;
import org.farng.mp3.MP3File;
import org.farng.mp3.TagException;
import org.farng.mp3.id3.AbstractID3v2;
import org.farng.mp3.id3.ID3v1;
import org.farng.mp3.lyrics3.AbstractLyrics3;

import com.base.BaseAction;
import com.opensymphony.xwork2.ActionSupport;

public class Upload extends BaseAction {
private static final long serialVersionUID = -4848248679889814408L;
private String fileName;
private File upload;
public File getUpload() {
    return upload;
}

public void setUpload(File upload) {
    this.upload = upload;
}

public void setUploadFileName(String fileName) {
    this.fileName = fileName;
}

/*
* 歌曲上传上传操作
*/
public void uploadAction() throws IOException {
    System.out.println("进入了该方法！");
        String targetDirectory = "D:\\upload";
        System.out.println(upload);
        File target = new File(targetDirectory, fileName);
        FileUtils.copyFile(upload, target);
        String path = targetDirectory+"\\"+fileName;

        try {

                MP3File file = new MP3File(path);//1,lyrics
                AbstractID3v2 id3v2 = file.getID3v2Tag();
                ID3v1 id3v1 = file.getID3v1Tag();
                String ss = "";
                if (id3v2 != null) {

                    System.out.println("id3v2");
                        ss = id3v2.getAlbumTitle()+";"+id3v2.getSongTitle()+";"+id3v2.getLeadArtist();
                        //String str = "{'msg','"+ss+"'}";
                        String str = ss;
                        outPut(str);
                    System.out.println(id3v2.getAlbumTitle());//专辑名
                    System.out.println(id3v2.getSongTitle());//歌曲名
                    System.out.println(id3v2.getLeadArtist());//歌手

                } else {
                    System.out.println("id3v1");

                    System.out.println(id3v1.getAlbumTitle());
                    System.out.println(id3v1.getSongTitle());
                    System.out.println(id3v1.getLeadArtist());

                }

                AbstractLyrics3 lrc3Tag = file.getLyrics3Tag();
                if (lrc3Tag != null) {
                    String lyrics = lrc3Tag.getSongLyric();
                    System.out.println(lyrics);
                }

            } catch (IOException e) {
                e.printStackTrace();
            } catch (TagException e) {
                e.printStackTrace();
            }

            System.out.println("over");
}
}

struts.xml配置文件*********************************
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.i18n.encoding" value="UTF-8"/>
       //设置上传文件最大量
        <constant name="struts.multipart.maxSize" value="10485760"/>

    <package name="upload" namespace="/" extends="struts-default" >
        <action name="uploadAction" class="action.Upload" method="uploadAction">
             <result name="success">/index.jsp</result>

        </action>
    </package>
</struts>

后来经过调试，发现火狐和ie不兼容导致无执行争取结果，所以我上传ajaxfileupload.js 我修改了源码

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