KindEditor 4.1.11 完整图片上传 表单提交Demo 解决js提交为空的问题
首先上效果图
1、编辑页面
2、图片上传完成后显示样式
由此可看到图片上传已完成，返回的是图片URL
3、提交后控制台输出
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1、下载KindEditor
首先下载KindEditor，在此版本为4.1.11，点击下载
2、新建项目
使用idea新建SpringBoot项目，不做过多叙述。
3、导入KindEditor
所需文件及文件夹如下：
4、新建html页面
添加文章
文章题目:
提交
5、Controller管理
1）、图片上传
@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
@ResponseBody
public Map fileUpload(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException,
FileUploadException {
ServletContext application = request.getSession().getServletContext();
// String savePath = application.getRealPath("/") + "/static/images/";
String savePath = "I:/img/";
// 文件保存目录URL
String saveUrl = "http://localhost:8077/showImg?imgUrl=";
// 定义允许上传的文件扩展名
HashMap extMap = new HashMap();
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,txt,zip,rar,gz,bz2");
// 最大文件大小
long maxSize = 1000000;
response.setContentType("text/html; charset=UTF-8");
if (!ServletFileUpload.isMultipartContent(request)) {
return getError("请选择文件。");
}
// 检查目录
File uploadDir = new File(savePath);
if (!uploadDir.isDirectory()) {
uploadDir.mkdir();
}
// 检查目录写权限
if (!uploadDir.canWrite()) {
return getError("上传目录没有写权限。");
}
String dirName = request.getParameter("dir");
if (dirName == null) {
dirName = "image";
}
if (!extMap.containsKey(dirName)) {
return getError("目录名不正确。");
}
// 创建文件夹
savePath += dirName + "/";
saveUrl += dirName + "/";
File saveDirFile = new File(savePath);
if (!saveDirFile.exists()) {
saveDirFile.mkdirs();
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
String ymd = sdf.format(new Date());
savePath += ymd + "/";
saveUrl += ymd + "/";
File dirFile = new File(savePath);
if (!dirFile.exists()) {
dirFile.mkdirs();
}
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
Iterator item = multipartRequest.getFileNames();
while (item.hasNext()) {
String fileName = (String) item.next();
MultipartFile file = multipartRequest.getFile(fileName);
// 检查文件大小
if (file.getSize() > maxSize) {
return getError("上传文件大小超过限制。");
}
// 检查扩展名
String fileExt = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".") + 1).toLowerCase();
if (!Arrays.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。");
}
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;
try {
File uploadedFile = new File(savePath, newFileName);
ByteStreams.copy(file.getInputStream(), new FileOutputStream(uploadedFile));
} catch (Exception e) {
return getError("上传文件失败。");
}
Map msg = new HashMap();
msg.put("error", 0);
msg.put("url", saveUrl + newFileName);
return msg;
}
return null;
} 
2）、图片读取
@RequestMapping(value = "/showImg", method = RequestMethod.GET)
public void ioReadImage(String imgUrl, HttpServletResponse response) throws IOException {
ServletOutputStream out = null;
FileInputStream ips = null;
String upload = null;
try {
//获取图片存放路径
String imgPath = "I:/img" + "/" + imgUrl;
ips = new FileInputStream(new File(imgPath));
String type = imgUrl.substring(imgUrl.indexOf(".") + 1);
if ("png".equals(type)) {
response.setContentType("image/png");
}
if ("jpeg".equals(type)) {
response.setContentType("image/jpeg");
}
out = response.getOutputStream();
//读取文件流
int len = 0;
byte[] buffer = new byte[1024 * 10];
while ((len = ips.read(buffer)) != -1) {
out.write(buffer, 0, len);
}
out.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
out.close();
ips.close();
}
}3）、图片管理预览
@RequestMapping(value = "/fileManager", method = RequestMethod.GET)
public void fileManager(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
ServletContext application = request.getSession().getServletContext();
ServletOutputStream out = response.getOutputStream();
/*// 根目录路径，可以指定绝对路径，比如 /var/www/attached/
String rootPath = application.getRealPath("/") + "images/";
// 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/
String rootUrl = request.getContextPath() + "/images/";*/
String rootPath = "I:/img/";
String rootUrl = "http://localhost:8080/kindeditor/showImg?imgUrl=";
// 图片扩展名
String[] fileTypes = new String[]{"gif", "jpg", "jpeg", "png", "bmp"};
String dirName = request.getParameter("dir");
if (dirName != null) {
if (!Arrays.asList(
new String[]{"image", "flash", "media", "file"})
.contains(dirName)) {
out.println("Invalid Directory name.");
return;
}
rootPath += dirName + "/";
rootUrl += dirName + "/";
File saveDirFile = new File(rootPath);
if (!saveDirFile.exists()) {
saveDirFile.mkdirs();
}
}
// 根据path参数，设置各路径和URL
String 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("/") >= 0 ? str.substring(0,
str.lastIndexOf("/") + 1) : "";
}
// 排序形式，name or size or type
String 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.println("Access is not allowed.");
return;
}
// 最后一个字符不是/
if (!"".equals(path) && !path.endsWith("/")) {
out.println("Parameter is not valid.");
return;
}
// 目录不存在或不是目录
File currentPathFile = new File(currentPath);
if (!currentPathFile.isDirectory()) {
out.println("Directory does not exist.");
return;
}
// 遍历目录取的文件信息
List fileList = new ArrayList();
if (currentPathFile.listFiles() != null) {
for (File file : currentPathFile.listFiles()) {
Hashtable hash = new Hashtable();
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.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());
}
Map msg = new HashMap();
msg.put("moveup_dir_path", moveupDirPath);
msg.put("current_dir_path", currentDirPath);
msg.put("current_url", currentUrl);
msg.put("total_count", fileList.size());
msg.put("file_list", fileList);
response.setContentType("application/json; charset=UTF-8");
String msgStr = objectMapper.writeValueAsString(msg);
out.println(msgStr);
}
class NameComparator implements Comparator {
@Override
public int compare(Object a, Object b) {
Hashtable hashA = (Hashtable) a;
Hashtable hashB = (Hashtable) b;
if (((Boolean) hashA.get("is_dir"))
&& !((Boolean) hashB.get("is_dir"))) {
return -1;
} else if (!((Boolean) hashA.get("is_dir"))
&& ((Boolean) hashB.get("is_dir"))) {
return 1;
} else {
return ((String) hashA.get("filename"))
.compareTo((String) hashB.get("filename"));
}
}
}
class SizeComparator implements Comparator {
@Override
public int compare(Object a, Object b) {
Hashtable hashA = (Hashtable) a;
Hashtable hashB = (Hashtable) b;
if (((Boolean) hashA.get("is_dir"))
&& !((Boolean) hashB.get("is_dir"))) {
return -1;
} else if (!((Boolean) hashA.get("is_dir"))
&& ((Boolean) hashB.get("is_dir"))) {
return 1;
} else {
if (((Long) hashA.get("filesize")) > ((Long) hashB
.get("filesize"))) {
return 1;
} else if (((Long) hashA.get("filesize")) < ((Long) hashB
.get("filesize"))) {
return -1;
} else {
return 0;
}
}
}
}
class TypeComparator implements Comparator {
@Override
public int compare(Object a, Object b) {
Hashtable hashA = (Hashtable) a;
Hashtable hashB = (Hashtable) b;
if (((Boolean) hashA.get("is_dir"))
&& !((Boolean) hashB.get("is_dir"))) {
return -1;
} else if (!((Boolean) hashA.get("is_dir"))
&& ((Boolean) hashB.get("is_dir"))) {
return 1;
} else {
return ((String) hashA.get("filetype"))
.compareTo((String) hashB.get("filetype"));
}
}
} 4）、图片地址保存
@ResponseBody
@PostMapping(value = "add")
public void add(String content, String title){
System.out.println("标题" + title + ", 内容" + content);
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Demo下载地址：https://download.csdn.net/download/zgsdzczh/11170980