jsp 页面

pageEncoding="UTF-8"%>

Insert title here

layui.use('upload', function(){

var $ = layui.jquery

,upload = layui.upload;

//多文件列表示例

var demoListView = $('#demoList')

,uploadListIns = upload.render({

elem: '#testList'

,url: '/Lol_uploadFile.action'

,accept: 'file'

,data:{id:123}   //还可以传参，参数id=123

,multiple: true

,auto: false

,bindAction: '#testListAction'

,success:function(msg) {

$.each($.parseJSON(msg.jsonData),function(i,item){

if (item.fileName==1) {

alert("ok");

} else {

alert("ok");

}

});

}

,choose: function(obj){

var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列

//读取本地文件

obj.preview(function(index, file, result){

var tr = $(['

'

,'

'+ file.name +''

,'

'+ (file.size/1014).toFixed(1) +'kb'

,'

等待上传'

,'

'

,'重传'

,'删除'

,'

'

,'

'].join(''));

//单个重传

tr.find('.demo-reload').on('click', function(){

obj.upload(index, file);

});

//删除

tr.find('.demo-delete').on('click', function(){

delete files[index]; //删除对应的文件

tr.remove();

uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值，以免删除后出现同名文件不可选

});

demoListView.append(tr);

});

}

,done: function(res, index, upload){

$.each($.parseJSON(res.jsonData),function(i,item){

if(item.success==1) {//上传成功

var tr = demoListView.find('tr#upload-'+ index)

,tds = tr.children();

tds.eq(2).html('上传成功');

tds.eq(3).html(''); //清空操作

return delete this.files[index]; //删除文件队列已经上传成功的文件

}

});

this.error(index, upload);

}

,error: function(index, upload){

var tr = demoListView.find('tr#upload-'+ index)

,tds = tr.children();

tds.eq(2).html('上传失败');

tds.eq(3).find('.demo-reload').removeClass('layui-hide'); //显示重传

}

});

});

action方法

需要添加两个属性

List file;

List fileFileName;

//记住要添加对应的get、set

public String updateImg() throws Exception {

JSONArray array = new JSONArray();

JSONObject obj = new JSONObject();

if(UploadFile.uploadFileBase(0, file, fileFileName, UPLOADDIR)) {

BusinessImage bsnImg = new BusinessImage();

bsnImg.setId(Integer.parseInt(imgId));

bsnImg.setImgUrl(UPLOADDIR+"/"+fileFileName.get(0));

businessImageServiceImpI.updateBusinessImageAjax(bsnImg);

obj.put("success", "1");

} else {

obj.put("success", "0");

}

array.put(obj);

jsonData = array.toString();

System.out.println(jsonData);

return SUCCESS;

}

图片上传工具类

package com.gxuwz.core.util;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.List;

import org.apache.struts2.ServletActionContext;

public class UploadFile {

@SuppressWarnings("deprecation")

public static boolean uploadFileBase(int i,List

file,List fileFileName,String uploadPath) throws Exception

{

try {

InputStream in = new FileInputStream(file.get(i));

String dir = ServletActionContext.getRequest().getRealPath(uploadPath);

File fileLocation = new File(dir);

//此处也可以在应用根目录手动建立目标上传目录

if(!fileLocation.exists()){

boolean isCreated  = fileLocation.mkdir();

if(!isCreated) {

//目标上传目录创建失败,可做其他处理,例如抛出自定义异常等,一般应该不会出现这种情况。

return false;

}

}

String fileName=fileFileName.get(i);

File uploadFile = new File(dir, fileName);

OutputStream out = new FileOutputStream(uploadFile);

byte[] buffer = new byte[1024 * 1024];

int length;

while ((length = in.read(buffer)) > 0) {

out.write(buffer, 0, length);

}

in.close();

out.close();

return true;

} catch (FileNotFoundException ex) {

ex.printStackTrace();

return false;

} catch (IOException ex) {

ex.printStackTrace();

return false;

}

}

}

如果不会配struct.xml 请往下看

jsonData