SpringBoot之KindEditor文件上传
后端核心代码如下:
package com.blog.springboot.controller; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.UUID; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; import org.springframework.stereotype.Controller; import org.springframework.util.FileCopyUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; import com.alibaba.fastjson.JSONObject; @Controller public class KindController { @RequestMapping(value = "/Kindeditor/uploadFile", method = RequestMethod.POST) public void uploadFile(HttpServletRequest request, HttpServletResponse response) throws Exception { PrintWriter writer = response.getWriter(); // 文件保存目录路径 String savePath = request.getSession().getServletContext().getRealPath("/") + "upload/image" + File.separatorChar + File.separatorChar; String saveUrl = request.getContextPath() + File.separatorChar + "upload/image" + File.separatorChar + File.separatorChar; // 定义允许上传的文件扩展名 HashMap<String, String> extMap = new HashMap<String, String>(); extMap.put("image", "gif,jpg,jpeg,png,bmp"); // 最大文件大小 long maxSize = 1000000; response.setContentType("text/html; charset=UTF-8"); if (!ServletFileUpload.isMultipartContent(request)) { writer.println(getError("请选择文件。")); return; } File uploadDir = new File(savePath); // 判断文件夹是否存在,如果不存在则创建文件夹 if (!uploadDir.exists()) { uploadDir.mkdirs(); } // 检查目录写权限 if (!uploadDir.canWrite()) { writer.println(getError("上传目录没有写权限。")); return; } String dirName = request.getParameter("dir"); if (dirName == null) { dirName = "image"; } if (!extMap.containsKey(dirName)) { writer.println(getError("目录名不正确。")); return; } MultipartHttpServletRequest mRequest = (MultipartHttpServletRequest) request; Map<String, MultipartFile> fileMap = mRequest.getFileMap(); String fileName = null; for (Iterator<Map.Entry<String, MultipartFile>> it = fileMap.entrySet().iterator(); it.hasNext();) { Map.Entry<String, MultipartFile> entry = it.next(); MultipartFile mFile = entry.getValue(); fileName = mFile.getOriginalFilename(); // 检查文件大小 if (mFile.getSize() > maxSize) { writer.println(getError("上传文件大小超过限制。")); return; } String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1); if (!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)) { writer.println(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。")); return; } UUID uuid = UUID.randomUUID(); String path = savePath + uuid.toString() + "." + fileExt; saveUrl = saveUrl + uuid.toString() + "." + fileExt; BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(path)); FileCopyUtils.copy(mFile.getInputStream(), outputStream); JSONObject obj = new JSONObject(); obj.put("error", 0); obj.put("url", saveUrl); writer.println(obj.toString()); } } private String getError(String message) { JSONObject obj = new JSONObject(); obj.put("error", 1); obj.put("message", message); return obj.toString(); } @RequestMapping(value = "/Kindeditor/fileManager", method = RequestMethod.GET) public void fileManager(HttpServletRequest request, HttpServletResponse response) throws Exception { // 根目录路径，可以指定绝对路径，比如 /var/www/attached/ String rootPath = request.getSession().getServletContext().getRealPath("/") + "upload/"; // 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/ String rootUrl = request.getContextPath() + "/upload/"; // 图片扩展名 String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png", "bmp" }; System.out.println(rootPath); String dirName = request.getParameter("dir"); if (dirName != null) { if (!Arrays.<String>asList(new String[] { "image", "flash", "media", "file" }).contains(dirName)) { System.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) { System.out.println("Access is not allowed."); return; } // 最后一个字符不是/ if (!"".equals(path) && !path.endsWith("/")) { System.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()) { System.out.println("Directory does not exist."); return; } // 遍历目录取的文件信息 List<Hashtable> fileList = new ArrayList<Hashtable>(); 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); response.setContentType("application/json; charset=UTF-8"); System.out.println(result.toJSONString()); PrintWriter writer = response.getWriter(); writer.println(result); } public class NameComparator implements Comparator { 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")); } } } public class SizeComparator implements Comparator { 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; } } } } public class TypeComparator implements Comparator { 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")); } } } }
前端核心代码:
var editor; KindEditor .ready(function(K) { editor = K .create( 'textarea[id="postContent"]', { filterMode : false, allowFileManager : true, cssPath : [ '../../blog-web/static/vendor/kindeditor/plugins/code/prettify.css' ], filePostName : "file", //这里就是指定文件上传的请求地址，上面也已经说了，upload_json.jsp就相当去一个servlet去进行保存文件，这个地方很重要 uploadJson : Blog.url.api.KindEditorUpload, fileManagerJson :Blog.url.api.KindEditorFileManager, resizeType : 1, allowPreviewEmoticons : true, allowImageUpload : true, filterMode : false, }); }); $(function() { prettyPrint(); });
本文参考资料如下:
https://blog.csdn.net/u012131769/article/details/47430873(我参考这各地址实践成功的，希望能够对大家有所启发)
