前后端分离跨服务器文件上传-Java SpringMVC版

<!-- 上传文件 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
　　<!--最大上传尺寸  5M -->
   <property name="maxUploadSize" value="5242880"/>
</bean>

#文件服务器地址
uploadHost=http://172.16.5.102:8090/
#上传的文件保存的目录
imgPath = upload/

package com.lin.utils;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FilenameUtils;
import org.springframework.web.multipart.MultipartFile;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;

/**
 * 上传文件工具类
 * @author libo
 */
public class Upload {
    /**
     * 
     * @param request
     * @param response
     * @param serverPath    服务器地址:(http://172.16.5.102:8090/)
     * @param path          文件路径（不包含服务器地址：upload/）
     * @return
     */
    public static String upload(Client client, MultipartFile file, HttpServletRequest request,HttpServletResponse response, String serverPath, String path){
        // 文件名称生成策略（UUID uuid = UUID.randomUUID()）
        Date d = new Date();
        SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
        String formatDate = format.format(d);
        String str = "";
        for(int i=0 ;i <5; i++){
            int n = (int)(Math.random()*90)+10;
            str += n;
        }
        // 获取文件的扩展名
        String extension = FilenameUtils.getExtension(file.getOriginalFilename());
        // 文件名
        String fileName = formatDate + str + "." + extension;
        //相对路径
        String relaPath = path + fileName;
        
        String a = serverPath + path.substring(0, path.lastIndexOf("/"));
        File file2 = new File(a);
        if(!file2.exists()){
            boolean mkdirs = file2.mkdirs();
            System.out.println(mkdirs);
        }
        
        // 另一台tomcat的URL（真实路径）
        String realPath = serverPath + relaPath;
        // 设置请求路径
        WebResource resource = client.resource(realPath);

        // 发送开始post get put（基于put提交）
        try {
            resource.put(String.class, file.getBytes());
            return fileName+";"+relaPath+";"+realPath;
        } catch (IOException e) {
            e.printStackTrace();
            return "失败";
        }
    }
}

package com.lin.controller;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.config.VelocityConfigurerBeanDefinitionParser;

import com.lin.domain.data.ResData;
import com.lin.domain.data.ResListData;
import com.lin.domain.error.Error;
import com.lin.domain.sysUser.SysUser;
import com.lin.domain.sysUser.SysUserWithDep;
import com.lin.service.SysUserService;
import com.lin.utils.Aes;
import com.lin.utils.DateTimeUtils;
import com.lin.utils.ResponseUtils;
import com.lin.utils.Upload;
import com.lin.utils.Utils;
import com.sun.jersey.api.client.Client;

import net.sf.json.JSONObject;

/**
 * 后台用户-controller
 * @author libo
 */
@Controller
@RequestMapping("/sysUser")
public class SysUserController {

    @Resource
    private SysUserService sysUserService;
    
    @Value(value="${imgPath}")    //后台图片保存地址
    private String imgPath;
    
    @Value(value="${uploadHost}")
    private String uploadHost;    //项目host路径    
    
    /**
     * 后台用户登陆功能
     * @return
     * @throws IOException 
     */
    @ResponseBody
    @RequestMapping(value="/login.do", method=RequestMethod.POST)
    public void login(HttpServletRequest req, HttpServletResponse res, 
            @RequestParam(required=true) String loginEmail, 
            @RequestParam(required=true) String loginPwd) throws IOException{
        //代码省略
    }
 /**
     * 根据id查询用户信息（包括部门信息）
     * @param req
     * @param res
     * @param id
     * @throws IOException 
     */
    @ResponseBody
    @RequestMapping(value="/getSysUser.do", method=RequestMethod.GET)
    public void getSysUser(HttpServletRequest req, HttpServletResponse res, 
            @RequestParam(required=true) Integer id) throws IOException{
     　　//代码省略
    }
    
    /**
     * 更新后台用户信息
     * @param req
     * @param res
     * @param id
     * @param userWithDep
     * @throws IOException 
     */
    @ResponseBody
    @RequestMapping(value="/updateSysUser.do" ,method=RequestMethod.POST)
    public void updateSysUser(HttpServletRequest req, HttpServletResponse res) throws IOException{
       //代码省略
    }
    
    /**
     * 添加用户
     * @param req
     * @param res
     * @throws IOException 
     */
    @ResponseBody
    @RequestMapping(value="/addSysUser.do", method=RequestMethod.POST)
    public void addSysUser(HttpServletRequest req, HttpServletResponse res) throws IOException {
        //代码省略
    }/**
     * 上传用户头像
     * @param request
     * @param response
     */
    @ResponseBody
    @RequestMapping(value="uploadSysHeadImg.do", method=RequestMethod.POST)
    public void uploadSysHeadImg(HttpServletRequest request,HttpServletResponse response){
        JSONObject jo = new JSONObject();
        try {
            MultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext());
            MultipartHttpServletRequest Murequest = resolver.resolveMultipart(request);       
            Map<String, MultipartFile> files = Murequest.getFileMap();//得到文件map对象
            
　　　　　　　// 实例化一个jersey
            Client client = new Client();
            
            List<String> fileNameList = new ArrayList<>();
            List<String> relaPathList = new ArrayList<>();
            List<String> realPathList = new ArrayList<>();
            for(MultipartFile pic: files.values()){
                String uploadInfo = Upload.upload(client, pic, request, response, uploadHost, imgPath);
                String[] infoList = uploadInfo.split(";");
                String fileName = infoList[0];    //文件名
                String relaPath = infoList[1];    //相对路径
                String realPath = infoList[2];    //真实路径
                
                fileNameList.add(fileName);
                relaPathList.add(relaPath);
                realPathList.add(realPath);
            }
            jo.put("success", 1);
            jo.put("error", null);
            jo.put("fileNameList", fileNameList);
            jo.put("relaPathList", relaPathList);
            jo.put("realPathList", realPathList);
        }catch (Exception e) {
            jo.put("success", 0);
            jo.put("error", "上传失败");
        }
        ResponseUtils.renderJson(response, jo.toString());
    }    
}

<!DOCTYPE html>
<html>
<head>
    <title>index1-cropper图片剪切上传</title>
    <meta charset="utf-8"/>
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <link rel="stylesheet" href="lib/cropper/dist/cropper.min.css" />
</head>
<body>

<!-- accept="image/*,camera":表示允许调用相册和摄像头，capture="camera"：表示直接打开摄像头-->
<!--<input id="btn1" type="file" accept="image/*,camera" capture="camera" style="opacity: 0;"/>-->
<input id="btn1" type="file" accept="image/*,camera" style="opacity: 0;"/>

<div>
    <div>上传之前的图片</div>
    <img id="face_image" style="width:50px;height:50px;border-radius: 25px;border: 1px solid #fff;"/>
    <div>上传之后服务器的图片</div>
    <img id="success_image" style="width:50px;height:50px;border-radius: 25px;border: 1px solid #fff;"/>
</div>
<div>
    <button id="upload_btn">上传头像</button>
    <button id="image_save">保存</button>
    <span></span>
</div>

<div class="upload-img" style="width:300px;height: 300px;">
    <img src=""/>
</div>

<script src="jquery.min.js"></script>
<script src="lib/cropper/dist/cropper.min.js"></script>
<script src="lib/canvas-toBlob/canvas-toBlob.js"></script>

<script>
    $(function() {
        //触发input file
        $(‘#upload_btn‘).click(function() {
            console.log(‘模拟点击。。。‘);
            $(‘#btn1‘).trigger(‘click‘);
        });

        //图片上传
        var $image = $(‘.upload-img > img‘);
        $image.cropper({
            viewMode: 1,
//            preview: ‘.img-preview‘, //不同尺寸预览区
            aspectRatio: 1, //裁剪比例，NaN-自由选择区域
            autoCropArea: 0.7, //初始裁剪区域占图片比例
            crop: function(data) { //裁剪操作回调
                console.log(data);
            }
        });
        var fileName; //选择上传的文件名
        $(‘#btn1‘).change(function(){
            var file = this.files[0];
            fileName = file.name;
            var reader = new FileReader();
            //reader回调，重新初始裁剪区
            reader.onload = function(){
                // 通过 reader.result 来访问生成的 DataURL
                var url = reader.result;
                //选择图片后重新初始裁剪区
                $image.cropper(‘reset‘, true).cropper(‘replace‘, url);
            };
            reader.readAsDataURL(file);
        });

        /*
         * 上传图片
         */
        $(‘#image_save‘).click(function() {
            var type = $image.attr(‘src‘).split(‘;‘)[0].split(‘:‘)[1];

            var canVas = $image.cropper("getCroppedCanvas", {});
            //将裁剪的图片加载到face_image
            $(‘#face_image‘).attr(‘src‘, canVas.toDataURL());
            canVas.toBlob(function(blob) {
                var formData = new FormData();
                formData.append("file", blob, fileName);
                http://172.16.5.102:9000/index1-cropper%E5%9B%BE%E7%89%87%E5%89%AA%E5%88%87%E4%B8%8A%E4%BC%A0.html
                $.ajax({
                    type: "POST",
                    url: ‘http://172.16.5.102:8081/ssm_project/sysUser/uploadSysHeadImg.do‘,
                    data: formData,
                    contentType: false, //必须
                    processData: false, //必须
                    dataType: "json",
                    success: function(res){
                        //清空上传文件的值
                        $(‘#btn1‘).val(‘‘);
                        $(‘#success_image‘).attr(‘src‘, res.realPathList[0]);
                    },
                    error : function() {
                        //清空上传文件的值
                        $(‘#btn1‘).val(‘‘);
                    }
                });
            }, type);
        });

        //取消
        $("#image_cancel").click(function() {
            //清空上传文件的值
            $(_pageId + inputFileId).val(‘‘);
        });
    });
</script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <!-- 选择图片后，就开始上传 -->
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>index2-jquery-Form表单提交</title>
    <script src="jquery.min.js"></script>
    <script src="jquery.form.js"></script>
</head>
<body>
<img height="100" id="success_img"/>
<form id="jvForm" action="o_save.shtml" method="post" enctype="multipart/form-data">
    <!-- 保存图片的相对路径，方便提交给后台，存到数据库 -->
    <input type="hidden" name="" id="img_path"/>

    <input type="file" id="select_file" onchange="uploadPic()" name="pic12"/>
</form>

<script>
    //上传图片
    function uploadPic(){
        //定义参数
        var options = {
            url:"http://172.16.5.102:8081/ssm_project/sysUser/uploadSysHeadImg.do",
            type:"post",
            dataType:"json",
            success:function(res){
                $(‘#success_img‘).attr(‘src‘, res.realPathList[0]); //真实完整路径
                $(‘#img_path‘).val(res.relaPathList[0]);    //相对路径
            }
        };
        //jquery.form使用方式
        $("#jvForm").ajaxSubmit(options);
    }
</script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <!-- 选择图片后，需要点击提交按钮，才开始上传，可以不需要form标签 -->
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>index3-jquery-ajax提交</title>
    <script src="jquery.min.js"></script>
</head>
<body>
<img id="success_img" height="100px">
<br>

<input type="file" id="upload_file">

<!-- 保存图片的相对路径，方便提交给后台，存到数据库 -->
<input type="hidden" name="" id="img_path"/>
<input type="button" id="uploadPicButton" value="上传">

<div>
    <a href="" id="download" download=""></a>
</div>
<script>
    //上传图片
    $(‘#uploadPicButton‘).click(function () {
        var pic = $(‘#upload_file‘)[0].files[0];
        var fd = new FormData();
        fd.append(‘uploadFile‘, pic);
        $.ajax({
            url:"http://172.16.5.102:8081/ssm_project/sysUser/uploadSysHeadImg.do",
            type:"post",
            data: fd,   // Form数据
            cache: false,
            contentType: false,
            processData: false,
            success:function(res){
                $(‘#success_img‘).attr(‘src‘, res.realPathList[0]); //真实完整路径
                $(‘#img_path‘).val(res.relaPathList[0]);    //相对路径

                $(‘#download‘).html(res.fileNameList[0]);
                $(‘#download‘).attr(‘href‘, res.realPathList[0]);
                $(‘#download‘).attr(‘download‘, res.fileNameList[0]);
            }
        });
    })
</script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>index4-WebUploader多文件上传</title>
    <link rel="stylesheet" href="lib/webuploader/dist/webuploader.css">
    <script src="jquery.min.js"></script>
    <script src="lib/webuploader/dist/webuploader.js"></script>
    <style>
        .file-item {
            display: inline-block;
            text-align: center;
            font-size: 12px;
            margin: 10px;
        }
        .file-item .progress {
            position: relative;
            height: 6px;
            width: 100%;
            background-color: #ddd;
        }
        .file-item .progress span {
            position: absolute;
            left: 0;
            top: 0;
            width: 0%;
            height: 6px;
            background-color: dodgerblue;
        }
        .suc-img-item {
            display: inline-block;
            height: 100px;
            margin: 10px;
        }
    </style>
</head>
<body>

<h3>图片上传</h3>
<!--dom结构部分-->
<div id="uploader-demo">
    <h4>上传前缩略图</h4>
    <div id="fileList" class="uploader-list"></div>
    <div id="upInfo"></div>

    <h4>上传后预览图</h4>
    <div id="successImgList">
            <!--<img class="suc-img-item" src="http://172.16.5.102:8090/upload/4337bd72-57d3-4d26-b94e-61193e9fe440.jpg">-->
            <!--<img class="suc-img-item" src="http://172.16.5.102:8090/upload/4337bd72-57d3-4d26-b94e-61193e9fe440.jpg">-->
    </div>

    <div id="filePicker">选择文件</div>
</div>
<input type="button" id="btn" value="开始上传">
<script>
//    // 图片上传demo
    $(function() {
        var $ = jQuery,
            $list = $(‘#fileList‘),
            $successImgList = $(‘#successImgList‘),
            ratio = window.devicePixelRatio || 1,  // 优化retina, 在retina下这个值是2 (window.devicePixelRatio是设备上物理像素和设备独立像素(device-independent pixels (dips))的比例)
            thumbnailWidth = 50 * ratio,   // 缩略图宽度
            thumbnailHeight = 50 * ratio,  // 缩略图高度
            uploader;    // Web Uploader实例

        // 初始化WebUploader
        uploader = WebUploader.create({
            auto: false,   // 自动上传
            swf:‘../js/Uploader.swf‘,   // swf文件路径
            server: ‘http://172.16.5.102:8081/ssm_project/sysUser/uploadSysHeadImg.do‘,  // 文件接收服务端接口地址
            threads:‘5‘,        //同时运行5个线程传输
            fileNumLimit:‘10‘,  //文件总数量只能选择10个

            // 选择文件的按钮，可选
            pick: {
                id:‘#filePicker‘,  //选择文件的按钮
                multiple:true      //允许可以同时选择多个图片
            },

            quality: 90,        // 图片质量，只有type为`image/jpeg`的时候才有效
            compressSize: 0,     // 单位字节，如果图片大小小于此值，不会采用压缩
            crop: true,        //是否同意剪切

            //限制传输文件类型，accept可以不写
            accept: {
                title: ‘Images‘,    //描述
                extensions: ‘gif,jpg,jpeg,bmp,png,mkv,mp4‘, //文件类型
                mimeTypes: ‘*/*‘    //mime类型(*/* 可以上传所有类型)
            },

            compress: false,    //是否启用压缩
            resize: false,      //尺寸不改变
            duplicate: false   //是否允许重复上传
        });


        // 当有文件添加进来的时候，创建img显示缩略图使用
        uploader.on(‘fileQueued‘, function(file) {
            var $li = $(‘<div id="‘ + file.id + ‘" class="file-item thumbnail">‘ +
                            ‘<img>‘ +
                            ‘<div class="info">‘ + file.name + ‘</div>‘ +
                            ‘<div class="progress"><span></span></div>‘ +
                        ‘</div>‘),
                $img = $li.find(‘img‘);

            $list.append($li);    // $list为容器jQuery实例

            // 创建缩略图
            // 如果为非图片文件，可以不用调用此方法。
            // thumbnailWidth x thumbnailHeight 为 50 x 50
            uploader.makeThumb(file, function(error, src) {
                if (error) {
                    $img.replaceWith(‘<span>不能预览</span>‘);
                    return;
                }
                $img.attr(‘src‘, src);
            }, thumbnailWidth, thumbnailHeight);
        });

        // 文件上传过程中创建进度条实时显示。  uploadProgress事件：上传过程中触发，携带上传进度。 file：文件对象；percentage：传输进度 Nuber：类型
        uploader.on(‘uploadProgress‘, function(file, percentage){
            console.log(file);
            console.log(percentage);
            var $li = $(‘#‘+file.id),
                $percent = $li.find(‘.progress span‘);

            // 避免重复创建
            if (!$percent.length) {
                $percent = $(‘<p class="progress"><span></span></p>‘).appendTo($li).find(‘span‘);
            }
            $percent.css(‘width‘, percentage * 100 + ‘%‘);
        });

        // 文件上传成功时候触发，给item添加成功class, 用样式标记上传成功。 file：文件对象，    response：服务器返回数据
        uploader.on(‘uploadSuccess‘, function(file,res) {
            $(‘#‘+file.id).addClass(‘upload-state-done‘);
            $("#upInfo").html("<font color=‘red‘>"+res._raw+"</font>");
            $successImgList.append(‘<img class="suc-img-item" src="‘+res.realPathList[0]+‘">‘);
        });

        // 文件上传失败                                file:文件对象 ， code：出错代码
        uploader.on(‘uploadError‘, function(file,code) {
            var $li = $( ‘#‘+file.id ),
                $error = $li.find(‘div.error‘);

            // 避免重复创建
            if(!$error.length) {
                $error = $(‘<div class="error"></div>‘).appendTo($li);
            }
            $error.text(‘上传失败!‘);
        });

        // 不管成功或者失败，文件上传完成时触发。 file： 文件对象
        uploader.on(‘uploadComplete‘, function( file ) {
            $(‘#‘+file.id ).find(‘.progress‘).remove();
        });

        //绑定提交事件
        $("#btn").click(function() {
            console.log("上传...");
            uploader.upload();   //执行手动提交
            console.log("上传成功");
        });

    });
</script>
</body>
</html>