SpringBoot项目中使用UEditor上传图片（修改版，不使用controller.jsp）

基于上传图片controller.jsp修改，使用自定义controller接收参数，自定义config.json路径，自定义图片上传位置和图片访问路径

原理：上传图片的过程中，测试发现，页面会请求controller.jsp两次，第一次目的是加载config.json，将其中的数据以json形式返回；第二次就是上传图片，成功后返回json格式数据：{"state": "SUCCESS","original": "Hydrangeas.jpg","size": "595284","title": "1551927256870045443.jpg","type": ".jpg","url": "/upload/image/20190307/1551927256870045443.jpg"}
 

1、将配置文件请求路径配置为SpringMVC的路径。

2、将config.json拷贝到application.properties同级目录（或者下级目录亦可）

3、编写controller，路径需要加上“ueditor"才行，即@RequestMapping(value = "/ueditor/initController") ， 因为存在2此请求，需要根据action值不同做不同处理。MultipartFile upfile 名称需要和cofnig.json中配置的名称相同才行。

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其中有3个路径。

一个是config.json的路径，基于classpath的，“/config.json”

二是图片上传的路径，本次将tomcat作为图片服务器，所以地址为：C:/Users/Administrator/Desktop/apache-tomcat-8.5.38/webapps/ROOT/img/

三是图片上传成功后的访问路径，tomcat端口为8080 ， 所以图片访问路径为：http://localhost:8080/img/ + imageName

代码如下： 

package com.demo.controller;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

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

import org.apache.commons.lang3.time.DateFormatUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import com.alibaba.fastjson.JSON;

@Controller
public class IndexController {

	/**
	 * 初始化UEditor上传文件、图片等配置
	 * 
	 * @param request
	 * @param response
	 */
	@RequestMapping(value = "/ueditor/initController")
	public void initController(MultipartFile upfile, HttpServletRequest request, HttpServletResponse response) {

		try {
			request.setCharacterEncoding("UTF-8");
			response.setHeader("Content-Type", "text/html");

			System.out.println("url : " + request.getRequestURL().toString());
			String value = request.getParameter("action");
			System.out.println("action:" + value);

			// 文件上传的路径
			String rootPath = "C:/Users/Administrator/Desktop/tomcat-8.5.38/webapps/ROOT/img/";
			String result = null;
			if ("config".equals(value)) { // 读取配置文件，将配置文件数据以json格式返回
				String configPath = "/config.json";// 配置文件路径， 相对于classpath
				/**
				 * 返回JOSN数据
				 * {"videoMaxSize":102400000,"videoActionName":"uploadvideo","fileActionName":"uploadfile","fileManagerListPath":"/ueditor/jsp/upload/file/","imageCompressBorder":1600,"imageManagerAllowFiles":[".png",".jpg",".jpeg",".gif",".bmp"],"imageManagerListPath":"/ueditor/jsp/upload/image/","fileMaxSize":51200000,"fileManagerAllowFiles":[".png",".jpg",".jpeg",".gif",".bmp",".flv",".swf",".mkv",".avi",".rm",".rmvb",".mpeg",".mpg",".ogg",".ogv",".mov",".wmv",".mp4",".webm",".mp3",".wav",".mid",".rar",".zip",".tar",".gz",".7z",".bz2",".cab",".iso",".doc",".docx",".xls",".xlsx",".ppt",".pptx",".pdf",".txt",".md",".xml"],"fileManagerActionName":"listfile","snapscreenInsertAlign":"none","scrawlActionName":"uploadscrawl","videoFieldName":"upfile","imageCompressEnable":true,"videoUrlPrefix":"","fileManagerUrlPrefix":"","catcherAllowFiles":[".png",".jpg",".jpeg",".gif",".bmp"],"imageManagerActionName":"listimage","snapscreenPathFormat":"/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}","scrawlPathFormat":"/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}","scrawlMaxSize":2048000,"imageInsertAlign":"none","catcherPathFormat":"/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}","catcherMaxSize":2048000,"snapscreenUrlPrefix":"","imagePathFormat":"/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}","imageManagerUrlPrefix":"","scrawlUrlPrefix":"","scrawlFieldName":"upfile","imageMaxSize":2048000,"imageAllowFiles":[".png",".jpg",".jpeg",".gif",".bmp"],"snapscreenActionName":"uploadimage","catcherActionName":"catchimage","fileFieldName":"upfile","fileUrlPrefix":"","imageManagerInsertAlign":"none","catcherLocalDomain":["127.0.0.1","localhost","img.baidu.com"],"filePathFormat":"/ueditor/jsp/upload/file/{yyyy}{mm}{dd}/{time}{rand:6}","videoPathFormat":"/ueditor/jsp/upload/video/{yyyy}{mm}{dd}/{time}{rand:6}","fileManagerListSize":20,"imageActionName":"uploadimage","imageFieldName":"upfile","imageUrlPrefix":"","scrawlInsertAlign":"none","fileAllowFiles":[".png",".jpg",".jpeg",".gif",".bmp",".flv",".swf",".mkv",".avi",".rm",".rmvb",".mpeg",".mpg",".ogg",".ogv",".mov",".wmv",".mp4",".webm",".mp3",".wav",".mid",".rar",".zip",".tar",".gz",".7z",".bz2",".cab",".iso",".doc",".docx",".xls",".xlsx",".ppt",".pptx",".pdf",".txt",".md",".xml"],"catcherUrlPrefix":"","imageManagerListSize":20,"catcherFieldName":"source","videoAllowFiles":[".flv",".swf",".mkv",".avi",".rm",".rmvb",".mpeg",".mpg",".ogg",".ogv",".mov",".wmv",".mp4",".webm",".mp3",".wav",".mid"]}
				 */
				InputStream inStream = IndexController.class.getResourceAsStream(configPath);
				StringBuilder builder = new StringBuilder();
				try {
					InputStreamReader reader = new InputStreamReader(inStream, "UTF-8");
					BufferedReader bfReader = new BufferedReader(reader);
					String tmpContent = null;
					while ((tmpContent = bfReader.readLine()) != null) {
						builder.append(tmpContent);
					}
					bfReader.close();
				} catch (UnsupportedEncodingException e) {
					e.printStackTrace();
				}
				// 过滤输入字符串, 剔除多行注释以及替换掉反斜杠
				result = builder.toString().replaceAll("/\\*[\\s\\S]*?\\*/", "").replaceAll(" ", "");
				System.out.println("result:" + result);

			} else if ("uploadimage".equals(value)) {// 上传文件
				// 上传成功后返回的json数据
				/*
				 * {"state": "SUCCESS","original": "Hydrangeas.jpg","size": "595284","title":
				 * "1551927256870045443.jpg","type": ".jpg","url":
				 * "/upload/image/20190307/1551927256870045443.jpg"}
				 */

				String originalFilename = upfile.getOriginalFilename();
				String type = originalFilename.substring(originalFilename.indexOf("."), originalFilename.length());
				long size = upfile.getSize();
				System.out.println(originalFilename);
				System.out.println(size);


				String middlePath = DateFormatUtils.format(new Date(), "yyyyMMdd") + "/";

				String fileFullName = rootPath + middlePath + originalFilename;
				// 图片访问地址（tomcat服务器）
				String url = "http://localhost:8080/img/" +middlePath+ originalFilename;
				try {
					
					File file = new File(fileFullName);
					if(!file.getParentFile().exists()) {
						file.getParentFile().mkdirs() ;
					}
					
					upfile.transferTo(file);

					Map<String, Object> map = new HashMap<String, Object>();
					map.put("state", "SUCCESS");
					map.put("original", originalFilename);
					map.put("size", size);
					map.put("title", originalFilename);
					map.put("type", type);
					map.put("url", url);

					result = JSON.toJSONString(map);
					System.out.println("result : " + result);

				} catch (Exception e) {
					e.printStackTrace();
				}
			}

			PrintWriter writer = response.getWriter();
			writer.write(result);
			writer.flush();
			writer.close();

		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

仅供参考...