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如何在springmvc中使用kindeditor上传文件？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
下载kindeditor
压缩包里面的jar放到tomcat的lib文件夹下，kindeditor文件放工程里，不用的可以删掉
jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" > <script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <script src="./kindeditor/kindeditor-all-min.js"></script> <script src="./kindeditor/lang/zh-CN.js"></script> <script> KindEditor .ready(function(K) { window.editor = K .create( '#editor_id', { uploadJson : 'Kindeditor/uploadFile', fileManagerJson : 'Kindeditor/fileManager', allowImageUpload : true, //多图上传 allowFileManager : true, //浏览图片空间 filterMode : false, //HTML特殊代码过滤 afterBlur : function() { this.sync(); }, //编辑器失去焦点(blur)时执行的回调函数（将编辑器的HTML数据同步到textarea） afterUpload : function(url, data, name) { //上传文件后执行的回调函数，必须为3个参数 if (name == "image" || name == "multiimage") { //单个和批量上传图片时 if (K("#pic").length > 0) { //文本框存在 document .getElementById('piclist').options[document .getElementById('piclist').length] = new Option( url, url); //下拉列表框增加一条 document .getElementById('piclist').selectedIndex += 1; //选定刚新增的这一条 K("#indexpicimg") .html( "<img src='" + url + "' width='150' height='95' />"); //重置图片展示区DIV的HTML内容 K("#pic").val(url); //重置文本框值 } } } }); }); </script> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form class="form-horizontal" role="form" action="articleAdd" method="post" > <div class="form-group"> <label for="firstname" class="col-sm-2 control-label">标题</label> <div class="col-sm-5"> <input type="text" class="form-control" id="title" name="title" placeholder="请输入标题"> </div> </div> <div class="form-group"> <label for="lastname" class="col-sm-2 control-label">类别</label> <div class="col-sm-3"> <select class="form-control" name="categoryId"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> </div> </div> <div class="form-group"> <label for="lastname" class="col-sm-2 control-label">内容</label> <div class=" col-sm-5"> <textarea id="editor_id" name="details" class="form-control" > <strong>HTML内容</strong> </textarea> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <button type="submit" class="btn btn-default">保存草稿</button> </div> </div> </form> </body> </html>
KindAction.java
package com.leo.ows.action;
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.commons.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 KindAction {
@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"));
}
}
}
}效果图
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