SpringMVC KindEditor在线编辑器之文件上传代码实例

SpringMVC KindEditor在线编辑器之文件上传代码实例

最近几个项目都要用到在线编辑器，由于之前做在线编辑器都只在php上，对于用java尤其是springmvc框架时，似乎并不如PHP那么简单，搜集了很多博文和资料，全部都不能达到效果，最后在参考各种资料后，自己花时间写了一个上传图片的控制器，亲测保证能用。

1.图片上传控制器

package com.xishan.yueke.view.system;

import java.io.File;

import java.io.IOException;

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.Date;

import java.util.HashMap;

import java.util.Hashtable;

import java.util.List;

import java.util.Map;

import java.util.Random;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

import org.apache.commons.io.FileUtils;

import org.json.simple.JSONObject;

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 com.xishan.yueke.view.BaseAction;

/**

* Class Name: FileManageAction.java

* Function:

* 在线编辑器控制器

* @author Yang Ji.

* @DateTime 2015年8月10日 下午8:26:50

* @version 1.0

*/

@Controller

public class FileManageAction extends BaseAction

{

// windows

// private String PATH_LINE = "\\";

// linux

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)

@ResponseBody

public 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 = request.getSession().getServletContext().getRealPath(PATH_LINE) + "kindeditor"+PATH_LINE+"attached"+PATH_LINE;

//文件保存目录URL

String saveUrl = request.getContextPath() + PATH_LINE +"kindeditor"+PATH_LINE+"attached"+PATH_LINE;

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;

}

//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 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,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();

}

SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");

String ymd = sdf.format(new Date());

savePath += ymd + PATH_LINE;

saveUrl += ymd + PATH_LINE;

File dirFile = new File(savePath);

if (!dirFile.exists()) {

dirFile.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.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", saveUrl + newFileName);

out.print(obj.toJSONString());

out.close();

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

private Map getError(String errorMsg) {

Map errorMap = new HashMap();

errorMap.put("error", 1);

errorMap.put("message", errorMsg);

return errorMap;

}

/**

* 文件空间

* @param request {@link HttpServletRequest}

* @param response {@link HttpServletResponse}

* @return json

*/

@SuppressWarnings("unchecked")

@RequestMapping(value = "/fileManager")

@ResponseBody

public void fileManager(HttpServletRequest request, HttpServletResponse response) {

try {

//根目录路径，可以指定绝对路径

String rootPath = request.getSession().getServletContext().getRealPath(PATH_LINE) + "kindeditor"+PATH_LINE+"attached"+PATH_LINE;

//根目录URL，可以指定绝对路径，比如 http://yoursite.com/attached/

String rootUrl = request.getContextPath() + PATH_LINE+"kindeditor"+PATH_LINE+"attached"+PATH_LINE;

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.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 += dirName + PATH_LINE;

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(PATH_LINE) >= 0 ? str.substring(0, str.lastIndexOf(PATH_LINE) + 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.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()){hIJyDQZKRT

out.print("文件夹不存在。");

out.close();

return;

}

//遍历目录取的文件信息

List

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());

}

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) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

private class NameComparator implements Comparator

public int compare(Map hashA, Map hashB) {

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"));

}

}

}

private class SizeComparator implements Comparator

public int compare(Map hashA, Map hashB) {

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;

}

}

}

}

private class TypeComparator implements Comparator

public int compare(Map hashA, Map hashB) {

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"));

}

}

}

}

2.jsp页面使用方法（在head加入下面代码，替换名为description的编辑区，在此之前需导入kindeditor的相关文件，详见官方文档）

使用其他的框架（比如Spring+Struts+Hibernate）方法大致相同，最终效果如下：

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