解决editor.md+SpringBoot前后端分离上传图片到阿里云OOS跨域等问题-阿里云开发者社区

最终代码：

一、分析遇到的问题：

在上传图片的时候会显示跨域的问题

后端也配置了跨域的问题

@RestController
@RequestMapping("/rest/agriculture/productController")
@Api("商品管理")
@CrossOrigin
public class ProductController

很明显不是后端的问题，其他的图片都可以进行上传，如下，唯独使用editor.md无法进行上传。

二、解决问题

js配置如下：

//初始化Markdown的编辑区
var testEditor = editormd({
   id      : "test-editormd",
   width   : "100%",
   height  : 640,
   syncScrolling : "single",
   path    : "res/editormd/lib/",
   placeholder : "请填写商品的详细描述信息",
   emoji:true,
   /**上传图片相关配置如下*/
   imageUpload       : true
   ,imageFormats      : ["jpg", "jpeg", "gif", "png", "bmp", "webp"]
   ,saveHTMLToTextarea: true//注意：这个配置，方便post提交表单
   ,crossDomainUpload : true
   ,imageUploadURL    : ServerIP+"/rest/agriculture/productController/addProductImage"//上传图片的的地址
});

关键代码：

/**上传图片相关配置如下*/
   imageUpload       : true
   ,imageFormats      : ["jpg", "jpeg", "gif", "png", "bmp", "webp"]
   ,saveHTMLToTextarea: true//注意：这个配置，方便post提交表单
   ,crossDomainUpload : true
   ,imageUploadURL    : ServerIP+"/rest/agriculture/productController/addProductImage"//上传图片的的地址

后端代码：

String homeDisplayDrawingImageUrl = ossUtil.checkImage(attach); 此代码只是我封装的上传倒阿里云OOS的一个工具类。可以忽略，你可以保存到自己的本地。如果你想保存到本地的话，可以参考我附加的文章地址，查看即可解决。

/**
     * 上传商品简介内容中的插入的单张图
     * @param attach
     * @return
     */
    @ResponseBody
    @RequestMapping(value = "/addProductImage", method = RequestMethod.POST)
    @ApiOperation("上传商品简介内容中的插入的单张图")
    public String addProductImage(@RequestParam(value = "editormd-image-file", required = false) MultipartFile attach) {
        JSONObject jsonObject=new JSONObject();
        //上传商品简介内容中的，单张图　
        String homeDisplayDrawingImageUrl = ossUtil.checkImage(attach); 
        try {
            // 下面response返回的json格式是editor.md所限制的，规范输出就OK
            jsonObject.put("success", 1);
            jsonObject.put("message", "上传成功");
            jsonObject.put("url", homeDisplayDrawingImageUrl);
        } catch (Exception e) {
            jsonObject.put("success", 0);
        }
        System.out.println(jsonObject.toString());
        return jsonObject.toString();
    }

至于传值为什么要这样写:editormd-image-file

@RequestParam(value = "editormd-image-file", required = false) MultipartFile attach

可以打开前端，使用控制台看一下这个的name，就是这个；如果想改的话，就去改源代码了。

解决问题的重要代码：

需要找到admin/res/editormd/plugins/image-dialog/image-dialog.js 这个js文件，因为要修改这的源代码，可以根据自己项目的路径参考我的地址来找到。

原来的代码：

var dialogContent = ( (settings.imageUpload) ? "<form action=\"" + action +"\" target=\"" + iframeName + "\" method=\"post\" enctype=\"multipart/form-data\" class=\"" + classPrefix + "form\">" : "<div class=\"" + classPrefix + "form\">" ) +
( (settings.imageUpload) ? "<iframe name=\"" + iframeName + "\" id=\"" + iframeName + "\" guid=\"" + guid + "\"></iframe>" : "" ) +
     "<label>" + imageLang.url + "</label>" +
     "<input type=\"text\" data-url />" + (function(){
         return (settings.imageUpload) ? "<div class=\"" + classPrefix + "file-input\">" +
                                             "<input type=\"file\" name=\"" + classPrefix + "image-file\" accept=\"image/!*\" />" +
                                             "<input type=\"submit\" value=\"" + imageLang.uploadButton + "\" />" +
                                         "</div>" : "";
     })() +
     "<br/>" +
     "<label>" + imageLang.alt + "</label>" +
     "<input type=\"text\" value=\"" + selection + "\" data-alt />" +
     "<br/>" +
     "<label>" + imageLang.link + "</label>" +
     "<input type=\"text\" value=\"http://\" data-link />" +
     "<br/>" +
 ( (settings.imageUpload) ? "</form>" : "</div>");

修改成：

var dialogContent = ( (settings.imageUpload) ? "<form action=\"#\" target=\"" + iframeName + "\" method=\"post\" enctype=\"multipart/form-data\" class=\"" + classPrefix + "form\">" : "<div class=\"" + classPrefix + "form\">" ) +
 ( (settings.imageUpload) ? "<iframe name=\"" + iframeName + "\" id=\"" + iframeName + "\" guid=\"" + guid + "\"></iframe>" : "" ) +
 "<label>" + imageLang.url + "</label>" +
 "<input type=\"text\" data-url />" + (function(){
     return (settings.imageUpload) ? "<div class=\"" + classPrefix + "file-input\">" +
         "<input type=\"file\" name=\"" + classPrefix + "image-file\" id=\"" + classPrefix + "image-file\" accept=\"image/!*\" />" +
         "<input type=\"submit\" value=\"" + imageLang.uploadButton + "\" />" +
         "</div>" : "";
 })() +
 "<br/>" +
 "<label>" + imageLang.alt + "</label>" +
 "<input type=\"text\" value=\"" + selection + "\" data-alt />" +
 "<br/>" +
 "<label>" + imageLang.link + "</label>" +
 "<input type=\"text\" value=\"http://\" data-link />" +
 "<br/>" +
 ( (settings.imageUpload) ? "</form>" : "</div>");

原来的：

uploadIframe.onload = function() {
   loading(false);
    var body = (uploadIframe.contentWindow ? uploadIframe.contentWindow : uploadIframe.contentDocument).document.body;
    var json = (body.innerText) ? body.innerText : ( (body.textContent) ? body.textContent : null);
    json = (typeof JSON.parse !== "undefined") ? JSON.parse(json) : eval("(" + json + ")");
    console.log(json);
    if(!settings.crossDomainUpload)
    {
      if (json.success === 1)
      {
          dialog.find("[data-url]").val(json.url);
      }
      else
      {
          alert(json.message);
      }
    }
    return false;
};

修改成:

uploadIframe.onload = function() {
      loading(false);
       //这是我个人写法
      var formData = new FormData();
       formData.append("editormd-image-file",$("#editormd-image-file")[0].files[0]);
       var action = settings.imageUploadURL + (settings.imageUploadURL.indexOf("?") >= 0 ? "&" : "?") + "guid=" + guid;
       console.log(formData);
       $.ajax({
           type:"post",
           url:action,
           data:formData,
           dataType:"json",
           async:false,
           processData : false, // 使数据不做处理
           contentType : false, // 不要设置Content-Type请求头
           success:function(data){
               // 成功拿到结果放到这个函数 data就是拿到的结果
               console.log(data);
               if(data.success == 1){
                   console.log(data.message);
                   dialog.find("[data-url]").val(data.url);
               }else{
                   alert(data.message);
               }
           },
       });
       return false;
};

全部js文件代码：

/*!
 * Image (upload) dialog plugin for Editor.md
 *
 * @file        image-dialog.js
 * @author      pandao
 * @version     1.3.4
 * @updateTime  2015-06-09
 * {@link       https://github.com/pandao/editor.md}
 * @license     MIT
 */
(function() {
    var factory = function (exports) {
    var pluginName   = "image-dialog";
    exports.fn.imageDialog = function() {
            var _this       = this;
            var cm          = this.cm;
            var lang        = this.lang;
            var editor      = this.editor;
            var settings    = this.settings;
            var cursor      = cm.getCursor();
            var selection   = cm.getSelection();
            var imageLang   = lang.dialog.image;
            var classPrefix = this.classPrefix;
            var iframeName  = classPrefix + "image-iframe";
      var dialogName  = classPrefix + pluginName, dialog;
      cm.focus();
            var loading = function(show) {
                var _loading = dialog.find("." + classPrefix + "dialog-mask");
                _loading[(show) ? "show" : "hide"]();
            };
            if (editor.find("." + dialogName).length < 1)
            {
                var guid   = (new Date).getTime();
                var action = settings.imageUploadURL + (settings.imageUploadURL.indexOf("?") >= 0 ? "&" : "?") + "guid=" + guid;
                if (settings.crossDomainUpload)
                {
                    action += "&callback=" + settings.uploadCallbackURL + "&dialog_id=editormd-image-dialog-" + guid;
                }
              /*  var dialogContent = ( (settings.imageUpload) ? "<form action=\"" + action +"\" target=\"" + iframeName + "\" method=\"post\" enctype=\"multipart/form-data\" class=\"" + classPrefix + "form\">" : "<div class=\"" + classPrefix + "form\">" ) +
                                        ( (settings.imageUpload) ? "<iframe name=\"" + iframeName + "\" id=\"" + iframeName + "\" guid=\"" + guid + "\"></iframe>" : "" ) +
                                        "<label>" + imageLang.url + "</label>" +
                                        "<input type=\"text\" data-url />" + (function(){
                                            return (settings.imageUpload) ? "<div class=\"" + classPrefix + "file-input\">" +
                                                                                "<input type=\"file\" name=\"" + classPrefix + "image-file\" accept=\"image/!*\" />" +
                                                                                "<input type=\"submit\" value=\"" + imageLang.uploadButton + "\" />" +
                                                                            "</div>" : "";
                                        })() +
                                        "<br/>" +
                                        "<label>" + imageLang.alt + "</label>" +
                                        "<input type=\"text\" value=\"" + selection + "\" data-alt />" +
                                        "<br/>" +
                                        "<label>" + imageLang.link + "</label>" +
                                        "<input type=\"text\" value=\"http://\" data-link />" +
                                        "<br/>" +
                                    ( (settings.imageUpload) ? "</form>" : "</div>");*/
                //这是我个人写法
                var dialogContent = ( (settings.imageUpload) ? "<form action=\"#\" target=\"" + iframeName + "\" method=\"post\" enctype=\"multipart/form-data\" class=\"" + classPrefix + "form\">" : "<div class=\"" + classPrefix + "form\">" ) +
                    ( (settings.imageUpload) ? "<iframe name=\"" + iframeName + "\" id=\"" + iframeName + "\" guid=\"" + guid + "\"></iframe>" : "" ) +
                    "<label>" + imageLang.url + "</label>" +
                    "<input type=\"text\" data-url />" + (function(){
                        return (settings.imageUpload) ? "<div class=\"" + classPrefix + "file-input\">" +
                            "<input type=\"file\" name=\"" + classPrefix + "image-file\" id=\"" + classPrefix + "image-file\" accept=\"image/!*\" />" +
                            "<input type=\"submit\" value=\"" + imageLang.uploadButton + "\" />" +
                            "</div>" : "";
                    })() +
                    "<br/>" +
                    "<label>" + imageLang.alt + "</label>" +
                    "<input type=\"text\" value=\"" + selection + "\" data-alt />" +
                    "<br/>" +
                    "<label>" + imageLang.link + "</label>" +
                    "<input type=\"text\" value=\"http://\" data-link />" +
                    "<br/>" +
                    ( (settings.imageUpload) ? "</form>" : "</div>");
        //这个是作者注释掉的，不知道干啥的 忽略即可
                //var imageFooterHTML = "<button class=\"" + classPrefix + "btn " + classPrefix + "image-manager-btn\" style=\"float:left;\">" + imageLang.managerButton + "</button>";
                dialog = this.createDialog({
                    title      : imageLang.title,
                    width      : (settings.imageUpload) ? 465 : 380,
                    height     : 254,
                    name       : dialogName,
                    content    : dialogContent,
                    mask       : settings.dialogShowMask,
                    drag       : settings.dialogDraggable,
                    lockScreen : settings.dialogLockScreen,
                    maskStyle  : {
                        opacity         : settings.dialogMaskOpacity,
                        backgroundColor : settings.dialogMaskBgColor
                    },
                    buttons : {
                        enter : [lang.buttons.enter, function() {
                            var url  = this.find("[data-url]").val();
                            var alt  = this.find("[data-alt]").val();
                            var link = this.find("[data-link]").val();
                            if (url === "")
                            {
                                alert(imageLang.imageURLEmpty);
                                return false;
                            }
              var altAttr = (alt !== "") ? " \"" + alt + "\"" : "";
                            if (link === "" || link === "http://")
                            {
                                cm.replaceSelection("![" + alt + "](" + url + altAttr + ")");
                            }
                            else
                            {
                                cm.replaceSelection("[![" + alt + "](" + url + altAttr + ")](" + link + altAttr + ")");
                            }
                            if (alt === "") {
                                cm.setCursor(cursor.line, cursor.ch + 2);
                            }
                            this.hide().lockScreen(false).hideMask();
                            //删除对话框
                            this.remove();
                            return false;
                        }],
                        cancel : [lang.buttons.cancel, function() {
                            this.hide().lockScreen(false).hideMask();
                            //删除对话框
                            this.remove();
                            return false;
                        }]
                    }
                });
                dialog.attr("id", classPrefix + "image-dialog-" + guid);
        if (!settings.imageUpload) {
                    return ;
                }
        var fileInput  = dialog.find("[name=\"" + classPrefix + "image-file\"]");
        fileInput.bind("change", function() {
          var fileName  = fileInput.val();
          var isImage   = new RegExp("(\\.(" + settings.imageFormats.join("|") + "))$", "i"); // /(\.(webp|jpg|jpeg|gif|bmp|png))$/
          if (fileName === "")
          {
            alert(imageLang.uploadFileEmpty);
                        return false;
          }
                    if (!isImage.test(fileName))
          {
            alert(imageLang.formatNotAllowed + settings.imageFormats.join(", "));
                        return false;
          }
                    loading(true);
                    var submitHandler = function() {
                        var uploadIframe = document.getElementById(iframeName);
                        uploadIframe.onload = function() {
                            loading(false);
                            /*var body = (uploadIframe.contentWindow ? uploadIframe.contentWindow : uploadIframe.contentDocument).document.body;
                            var json = (body.innerText) ? body.innerText : ( (body.textContent) ? body.textContent : null);
                            json = (typeof JSON.parse !== "undefined") ? JSON.parse(json) : eval("(" + json + ")");
                            console.log(json);
                            if(!settings.crossDomainUpload)
                            {
                              if (json.success === 1)
                              {
                                  dialog.find("[data-url]").val(json.url);
                              }
                              else
                              {
                                  alert(json.message);
                              }
                            }
                            return false;*/
                                //这是我个人写法
                               var formData = new FormData();
                                formData.append("editormd-image-file",$("#editormd-image-file")[0].files[0]);
                                var action = settings.imageUploadURL + (settings.imageUploadURL.indexOf("?") >= 0 ? "&" : "?") + "guid=" + guid;
                                console.log(formData);
                                $.ajax({
                                    type:"post",
                                    url:action,
                                    data:formData,
                                    dataType:"json",
                                    async:false,
                                    processData : false, // 使数据不做处理
                                    contentType : false, // 不要设置Content-Type请求头
                                    success:function(data){
                                        // 成功拿到结果放到这个函数 data就是拿到的结果
                                        console.log(data);
                                        if(data.success == 1){
                                            console.log(data.message);
                                            dialog.find("[data-url]").val(data.url);
                                        }else{
                                            alert(data.message);
                                        }
                                    },
                                });
                                return false;
                        };
                    };
                    dialog.find("[type=\"submit\"]").bind("click", submitHandler).trigger("click");
        });
            }
      dialog = editor.find("." + dialogName);
      dialog.find("[type=\"text\"]").val("");
      dialog.find("[type=\"file\"]").val("");
      dialog.find("[data-link]").val("http://");
      this.dialogShowMask(dialog);
      this.dialogLockScreen();
      dialog.show();
    };
  };
  // CommonJS/Node.js
  if (typeof require === "function" && typeof exports === "object" && typeof module === "object")
    {
        module.exports = factory;
    }
  else if (typeof define === "function")  // AMD/CMD/Sea.js
    {
    if (define.amd) { // for Require.js
      define(["editormd"], function(editormd) {
                factory(editormd);
            });
    } else { // for Sea.js
      define(function(require) {
                var editormd = require("./../../editormd");
                factory(editormd);
            });
    }
  }
  else
  {
        factory(window.editormd);
  }
})();