java利用WebUploader插件上传附件，由前台传送到后台。导致了本地文件的真实路径被浏览器变成fakepath

人生何处不青山° 2019-01-16 03:35:19

最近遇到个问题。我用java写的本地文件上传到HDFS上。因为用的WebUploader插件。由前台传送到后台。导致了本地文件的真实路径被浏览器变声fakepath了。想请教下。怎么得到上传附件的真是路径。代码是以上这样的：
前端JS代码：
$(function() {
var seqId = $("#seqId").val();

var uploader = WebUploader.create({

// swf文件路径
swf: '${ctxPath}/static/modular/csvattachmentinfo/webuploader-0.1.5/Uploader.swf',

// 文件接收服务端。
server: Feng.ctxPath+'/csvAttachmentInfo/uploadFile?seqId='+seqId,

// 选择文件的按钮。可选。
pick:{
id:'#picker', //选择文件的按钮
multiple:false
},
// 单个文件最大限制
// fileSingleSizeLimit :50*1024*1024,
//单文件上传
fileNumLimit: 1,
// 不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！
resize: false,
duplicate :true
});

// 当有文件被添加进队列的时候
uploader.on( 'fileQueued', function( file ) {
$('#thelist').append( '<div id="' + file.id + '" class="item">' +
'<h4 class="info">' + file.name + '</h4>' +
'<p class="state">等待上传...</p>' +
'</div>' );
});

//验证文件大小
uploader.on("error", function (type) {
if (type == "F_EXCEED_SIZE") {
layer.msg("文件大小不能超过50M");
}else if(type == "Q_EXCEED_NUM_LIMIT"){
layer.msg("只能选择一个文件");
}else{
layer.msg("文件出错！错误代码"+type);
}
});

// 文件上传过程中创建进度条实时显示。
uploader.on( 'uploadProgress', function( file, percentage ) {
var $li = $( '#'+file.id ),
$percent = $li.find('.progress .progress-bar');

// 避免重复创建
if ( !$percent.length ) {
$percent = $('<div class="progress progress-striped active">' +
'<div class="progress-bar" role="progressbar" style="width: 0%">' +
'</div>' +
'</div>').appendTo( $li ).find('.progress-bar');
}

$li.find('p.state').text('上传中');

$percent.css( 'width', percentage * 100 + '%' );
});

uploader.on( 'uploadSuccess', function( file,response ) {
$( '#'+file.id ).find('p.state').text(response.code);
parent.Feng_2.info(response.code);
});

uploader.on( 'uploadError', function( file ) {
$( '#'+file.id ).find('p.state').text('上传出错');
});

uploader.on( 'uploadComplete', function( file ) {
$( '#'+file.id ).find('.progress').fadeOut();
var win = parent.window['layui-layer-iframe1'].window;
win.CsvAttachmentInfo.table.refresh();
});
//开始上传点击没反应的解决方案，手动绑定上传事件。
$("#ctlBtn").click(function () {
uploader.upload();
});
});

后台controller代码：
@RequestMapping(value = "/uploadFile")
@ResponseBody
public Map<String,Object> uploadFile(HttpServletRequest request, @RequestParam("file") MultipartFile file, String seqId){
Map<String,Object> res = new HashMap<String,Object>();
//Path path1 = null;
String path = request.getSession().getServletContext().getRealPath(String.valueOf(file));
//String path = this.getClass().getClassLoader().getResource("file").getPath();
String serverFilename = null;
String fileType = null;
if(!file.isEmpty()) {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("HHmmssSSS");
serverFilename = sdf.format(date);
String fileName=file.getOriginalFilename();
fileType=fileName.substring(fileName.lastIndexOf(".")+ 1, fileName.length());
}
try {
HdfsUtil.hdfsUpload("/gage/test/matrix/step1_input/",path);
CsvAttachmentInfo csvAttachmentInfo = new CsvAttachmentInfo();
csvAttachmentInfo.setCsvAttachmentName(serverFilename+"."+fileType);
csvAttachmentInfo.setBatchId(seqId);
csvAttachmentInfo.setDelFlag(0);
csvAttachmentInfoService.insert(csvAttachmentInfo);
} catch (IOException e) {
res.put("code","上传出错");
e.printStackTrace();
return res;
} catch (URISyntaxException e) {
e.printStackTrace();
}
res.put("code","上传成功");
return res;
}

HdfsUtil部分代码：
public static boolean hdfsUpload(String destPath,String basePath) throws IOException,URISyntaxException {

//获取配置文件信息
Configuration conf = new Configuration();
conf.set("fs.hdfs.impl", "org.apache.hadoop.hdfs.DistributedFileSystem");
conf.set("fs.defaultFS", HDFSUri);
//获取文件系统
FileSystem hdfs = FileSystem.get(conf);
//文件名称
Path src = new Path(basePath);
Path dst = new Path(HDFSUri + destPath);
if(!hdfs.exists(dst)){
hdfs.mkdirs(dst);
}
hdfs.copyFromLocalFile(src, dst);
System.out.println("Upload to " + conf.get("fs.defaultFS"));
FileStatus files[] = hdfs.listStatus(dst);
for(FileStatus file:files){
System.out.println(file.getPath());
}
return true;
}
HTML代码：
<div id="uploader" class="wu-example">

<div id="thelist" class="uploader-list"></div>
<div class="btns">
<div id="picker">选择文件</div>
<button id="ctlBtn" class="btn btn-default">开始上传</button>
</div>
</div>

错误信息为：
2019-01-16 15:32:05.425 WARN 20196 --- [nio-8080-exec-1] org.apache.hadoop.util.NativeCodeLoader : Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
java.io.FileNotFoundException: File C:/Users/gff/AppData/Local/Temp/tomcat-docbase.4861895171822099555.8080/org.springframework.web.multipart.support.StandardMultipartHttpServletRequest$StandardMultipartFile@1eeab002 does not exist

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