springmvc+kindeditor文件上传实例详解

堵鸿光

2023-03-14

本文向大家介绍springmvc+kindeditor文件上传实例详解，包括了springmvc+kindeditor文件上传实例详解的使用技巧和注意事项，需要的朋友参考一下

本文实例为大家分享了springmvc+kindeditor文件上传的具体代码，供大家参考，具体内容如下

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" >
    &lt;strong&gt;HTML内容&lt;/strong&gt;
    </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

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持小牛知识库。

springmvc+kindeditor文件上传实例详解

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