KindEditor实现上传图片与回显

本博客前面还有一个简化版容易理解：https://blog.csdn.net/Strive279/article/details/121250542
1.自定义编辑器

// 创建编辑器editor = KindEditor.create( "#editor_id", {resizeType : 1,allowImageUpload:true,//允许上传图片allowFileManager:true, //允许对上传图片进行管理uploadJson:root + '/fileUpload',filePostName: 'imgFile',// name属性默认值fileManagerJson:root + '/fileManager',afterChange:function(){this.sync();},afterUpload: function(){this.sync();}, //图片上传后，将上传内容同步到textarea中afterBlur: function(){this.sync();},   失去焦点时，将上传内容同步到textarea中afterCreate : function() { this.sync();   },afterBlur:function(){  this.sync(); },items: ['source', '|', 'undo', 'redo', '|', 'preview', 'print', 'template', 'code', 'cut', 'copy', 'paste','plainpaste', 'wordpaste', '|', 'justifyleft', 'justifycenter', 'justifyright','justifyfull', 'insertorderedlist', 'insertunorderedlist', 'indent', 'outdent', 'subscript','superscript', 'clearhtml', 'quickformat', 'selectall', '|', 'fullscreen', '/','formatblock', 'fontname', 'fontsize', '|', 'forecolor', 'hilitecolor', 'bold','italic', 'underline', 'strikethrough', 'lineheight', 'removeformat', '|', 'image','table', 'hr', 'emoticons', 'baidumap', 'pagebreak','anchor', 'link', 'unlink'],allowFileManager: true});

2.Java实现代码

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
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.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.*;@Controller
public class KindEditorUpload{private String PATH_LINE = "/";/*** 文件上传** @param request  {@link HttpServletRequest}* @param response {@link HttpServletResponse}* @return json response*/@SuppressWarnings("unchecked")@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)@ResponseBodypublic void fileUpload(HttpServletRequest request, HttpServletResponse response,@RequestParam("imgFile") MultipartFile[] imgFile) {try {response.setCharacterEncoding("utf-8");PrintWriter out = response.getWriter();// 文件保存本地目录路径String savePath = PathConfig.temporaryFilePath + PathConfig.imgPath;// 文件保存目录URLString saveUrl = request.getContextPath() + "/KindEditor/uploads/";System.out.println("savePath----------------->" + savePath);System.out.println("saveUrl----------------->" + saveUrl);if (!ServletFileUpload.isMultipartContent(request)) {out.print(getError("请选择文件。"));out.close();return;}// 检查目录File uploadDir = new File(savePath);
//            if (!uploadDir.isDirectory()) {//                out.print(getError("上传目录不存在。"));
//                out.close();
//                return;
//            }if (!uploadDir.exists()) { //如果不存在uploadDir.mkdirs(); //创建该文件夹}// 检查目录写权限if (!uploadDir.canWrite()) {out.print(getError("上传目录没有写权限。"));out.close();return;}String dirName = request.getParameter("dir");if (dirName == null) {dirName = "image";}// 定义允许上传的文件扩展名Map<String, String> extMap = new HashMap<String, String>();extMap.put("image", "gif,jpg,jpeg,png,bmp");extMap.put("flash", "swf,flv");extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,xml,txt,zip,rar,gz,bz2");if (!extMap.containsKey(dirName)) {out.print(getError("目录名不正确。"));out.close();return;}// 创建文件夹
//            savePath += dirName + PATH_LINE;
//            saveUrl += dirName + PATH_LINE;File saveDirFile = new File(savePath);if (!saveDirFile.exists()) {saveDirFile.mkdirs();}//             //最大文件大小
//              long maxSize = 1000000;// 保存文件for (MultipartFile iFile : imgFile) {String fileName = iFile.getOriginalFilename();//                   //检查文件大小
//                  if(iFile.getSize() > maxSize){//                      out.print(getError("上传文件大小超过限制。"));
//                      out.close();
//                      return;
//                  }// 检查扩展名String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();if (!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)) {// return getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName) + "格式。");out.print(getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName) + "格式。"));out.close();return;}SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;try {File uploadedFile = new File(savePath, newFileName);// 写入文件FileUtils.copyInputStreamToFile(iFile.getInputStream(), uploadedFile);} catch (Exception e) {out.print(getError("上传文件失败。"));out.close();return;}JSONObject obj = new JSONObject();obj.put("error", 0);
//                obj.put("url", request.getServletContext().getRealPath(saveUrl) + newFileName);obj.put("url", "/showImg?imgUrl=" + newFileName);out.print(obj.toJSONString());out.close();}} catch (Exception e) {e.printStackTrace();}}private Map<String, Object> getError(String errorMsg) {Map<String, Object> errorMap = new HashMap<String, Object>();errorMap.put("error", 1);errorMap.put("message", errorMsg);return errorMap;}/*** @param imgUrl 图片在本地磁盘的位置 如：E:/teacherCompetition/1/images/1.jpg* @param request* @param response*/@RequestMapping("/showImg")public void picToJSP(@RequestParam("imgUrl") String imgUrl, HttpServletRequest request, HttpServletResponse response){FileInputStream in;response.setContentType("application/octet-stream;charset=UTF-8");try {//图片读取路径String basePath = PathConfig.temporaryFilePath + PathConfig.imgPath;File file=new File(basePath + imgUrl);if(!file.exists()){String pattern = "^file:[/]*";imgUrl = imgUrl.replaceAll(pattern, "");in=new FileInputStream(imgUrl);} else {in=new FileInputStream(basePath + imgUrl);}int i=in.available();byte[]data=new byte[i];in.read(data);in.close();//写图片OutputStream outputStream=new BufferedOutputStream(response.getOutputStream());outputStream.write(data);outputStream.flush();outputStream.close();} catch (Exception e) {e.printStackTrace();}}/*** 文件空间** @param request  {@link HttpServletRequest}* @param response {@link HttpServletResponse}* @return json*/@SuppressWarnings("unchecked")@RequestMapping(value = "/fileManager")@ResponseBodypublic void fileManager(HttpServletRequest request, HttpServletResponse response) {try {// 根目录路径，可以指定绝对路径String rootPath = PathConfig.temporaryFilePath + PathConfig.imgPath;// 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/String rootUrl = PathConfig.temporaryFilePath + "/showImg?imgUrl=";System.out.println("rootPath----------------->" + rootPath);System.out.println("rootUrl----------------->" + rootUrl);response.setContentType("application/json; charset=UTF-8");PrintWriter out = response.getWriter();// 图片扩展名String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png", "bmp" };String dirName = request.getParameter("dir");if (dirName != null) {if (!Arrays.<String>asList(new String[] { "image", "flash", "media", "file" }).contains(dirName)) {out.print("无效的文件夹。");out.close();return;}
//                rootPath += dirName + PATH_LINE;
//                rootUrl += PATH_LINE;File saveDirFile = new File(rootPath);if (!saveDirFile.exists()) {saveDirFile.mkdirs();}}// 根据path参数，设置各路径和URLString path = request.getParameter("path") != null ? request.getParameter("path") : "";String currentPath = rootPath + path;String currentUrl = rootUrl + path;String currentDirPath = path;String moveupDirPath = "";if (!"".equals(path)) {String str = currentDirPath.substring(0, currentDirPath.length() - 1);moveupDirPath = str.lastIndexOf(PATH_LINE) >= 0 ? str.substring(0, str.lastIndexOf(PATH_LINE) + 1) : "";}// 排序形式，name or size or typeString order = request.getParameter("order") != null ? request.getParameter("order").toLowerCase() : "name";// 不允许使用..移动到上一级目录if (path.indexOf("..") >= 0) {out.print("访问权限拒绝。");out.close();return;}// 最后一个字符不是/if (!"".equals(path) && !path.endsWith(PATH_LINE)) {out.print("无效的访问参数验证。");out.close();return;}// 目录不存在或不是目录File currentPathFile = new File(currentPath);if (!currentPathFile.isDirectory()) {out.print("文件夹不存在。");out.close();return;}// 遍历目录取的文件信息List<Map<String, Object>> fileList = new ArrayList<Map<String, Object>>();if (currentPathFile.listFiles() != null) {for (File file : currentPathFile.listFiles()) {Hashtable<String, Object> hash = new Hashtable<String, Object>();String fileName = file.getName();if (file.isDirectory()) {hash.put("is_dir", true);hash.put("has_file", (file.listFiles() != null));hash.put("filesize", 0L);hash.put("is_photo", false);hash.put("filetype", "");} else if (file.isFile()) {String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();hash.put("is_dir", false);hash.put("has_file", false);hash.put("filesize", file.length());hash.put("is_photo", Arrays.<String>asList(fileTypes).contains(fileExt));hash.put("filetype", fileExt);}hash.put("filename", fileName);hash.put("datetime", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(file.lastModified()));fileList.add(hash);}}if ("size".equals(order)) {Collections.sort(fileList, new SizeComparator());} else if ("type".equals(order)) {Collections.sort(fileList, new TypeComparator());} else {Collections.sort(fileList, new NameComparator());}JSONObject result = new JSONObject();result.put("moveup_dir_path", moveupDirPath);result.put("current_dir_path", currentDirPath);result.put("current_url", currentUrl);result.put("total_count", fileList.size());result.put("file_list", fileList);out.println(result.toJSONString());out.close();} catch (IOException e) {e.printStackTrace();}}

pathConfig配置文件

package com.newdo.config;import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;@Component
public class PathConfig {/**路径类型*/public static String pathType;@Value(value="${path.type}")public void setSavePath(String savePath){pathType = savePath;}/**临时文件存储目录*/public static String temporaryFilePath;@Value(value="${temporary.filePath}")public void setSavePath1(String savePath){temporaryFilePath = savePath;}/**临时文件存储后续目录*/public static String temporaryPath;@Value(value="${temporary.Path}")public void setSavePath2(String savePath){temporaryPath = savePath;}/**图片存储目录*/public static String imgPath;@Value(value="${img.Path}")public void setSavePath3(String savePath){imgPath = savePath;}
}

application配置文件需要添加的参数

#静态资源
spring.mvc.static-path-pattern=/static/**
spring.resources.static-locations=classpath:/static/#设置请求大小限制
spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.max-request-size=100MB#路径类型 windows:\\  liunx:/
path.type=\\
#path.type=/#临时文件存放路径
temporary.filePath=D:\\dxproject\\temporaryFile
temporary.Path=\\resources\\temporaryFile\\
#temporary.filePath=/usr/zhgxrsgl-tomcat
#temporary.Path=/resources/temporaryFile/#图片存放路径
img.Path=\\KindEditor\\uploads\\
#img.Path=/KindEditor/uploads/

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