spring mvc整合kindeditor文件上传问题

环境 ： springmvc

今天 用 kindeditor 上传图片的时候 遇到一个问题

 

按照 kindedirot 提供的例子进行图片的上传

 

FileItemFactory factory = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(factory);
		upload.setHeaderEncoding("UTF-8");
		List items = upload.parseRequest(request);

 

在

 

List items = upload.parseRequest(request);

 的时候 得到的 items 为空

 

这个问题比较 蛋疼，

看application 中的配置

 

<bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
		<property name="maxUploadSize" value="1024000000" /> </bean> 

 

其中 CommonsMultipartResolver 类中有一个

 

 

	public boolean isMultipart(HttpServletRequest request) {
		return request != null && ServletFileUpload.isMultipartContent(request);
	}

 

在 

MultipartFilter 中 

 

 

@Override
	protected void doFilterInternal(
			HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
			throws ServletException, IOException {

		MultipartResolver multipartResolver = lookupMultipartResolver(request);

		HttpServletRequest processedRequest = request;
		if (multipartResolver.isMultipart(processedRequest)) {
			if (logger.isDebugEnabled()) {
				logger.debug("Resolving multipart request [" + processedRequest.getRequestURI() +
						"] with MultipartFilter");
			}
			processedRequest = multipartResolver.resolveMultipart(processedRequest);
		}
		else {
			if (logger.isDebugEnabled()) {
				logger.debug("Request [" + processedRequest.getRequestURI() + "] is not a multipart request");
			}
		}
		
		try {
			filterChain.doFilter(processedRequest, response);
		}
		finally {
			if (processedRequest instanceof MultipartHttpServletRequest) {
				multipartResolver.cleanupMultipart((MultipartHttpServletRequest) processedRequest);
			}
		}
	}

 

 将 request 转换为  MultipartHttpServletRequest  （StandardMultipartHttpServletRequest）

----------------------------------

/**
	 * Create a new StandardMultipartHttpServletRequest wrapper for the given request.
	 * @param request the servlet request to wrap
	 * @throws MultipartException if parsing failed
	 */
	public StandardMultipartHttpServletRequest(HttpServletRequest request) throws MultipartException {
		super(request);
		try {
			Collection<Part> parts = request.getParts();
			MultiValueMap<String, MultipartFile> files = new LinkedMultiValueMap<String, MultipartFile>(parts.size());
			for (Part part : parts) {
				String filename = extractFilename(part.getHeader(CONTENT_DISPOSITION));
				if (filename != null) {
					files.add(part.getName(), new StandardMultipartFile(part, filename));
				}
			}
			setMultipartFiles(files);
		}
		catch (Exception ex) {
			throw new MultipartException("Could not parse multipart servlet request", ex);
		}
	}

 但是 在  List items = upload.parseRequest(request); 中 需要的 request 是 HttpServletRequest 所以 这里得到的list 为空

==============================================

 

解决方法 有两个

1. 定义一个filter 名字为 filterMultipartResolver 并且放到 spring mvc 的filter 以前

2. 重写  org.springframework.web.multipart.commons.CommonsMultipartResolver 类中的

     isMultipart 方法

例如 通过 kindeditor 过来的 请求 都有 一个默认参数 dir

 

public class MyCommonsMultipartResolver extends CommonsMultipartResolver {

	private static final Logger log = Logger.getLogger(MyCommonsMultipartResolver.class);
	@Override
	public boolean isMultipart(HttpServletRequest request) {
		String dir = request.getParameter("dir");
		if(dir!=null){  // kindeditor 上传图片的时候 不进行request 的转换
			return false;
		}
		return super.isMultipart(request);
	}

}

 ========

欢迎拍砖。

各位大神 如果有更好的方法，请尽管拍过来。

 

 

 

 

 

 

评论

4 楼 dmyccc 2016-08-13  

第二种方法还是很佩服楼主的，但是多少感觉有点投机取巧了。但是确实解决了问题， 先用着哈哈 

3 楼 du_bo 2014-04-18  

在xx-servlet.xml中这样配置
<bean id="multipartResolver" class="com.xx.xxx.MyMultipartResolver">
<property name="maxUploadSize">
<value>104857600</value>
</property>
<property name="maxInMemorySize">
<value>4096</value>
</property>
<property name="defaultEncoding" value="utf-8" />
</bean>

package com.xx.xx;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.multipart.commons.CommonsMultipartResolver;
public class MyMultipartResolver extends CommonsMultipartResolver {
@Override
public boolean isMultipart(HttpServletRequest request) {
if (request.getRequestURI().contains("/editk/file_upload")) {
return false;
}
return super.isMultipart(request);
}
}

2 楼 du_bo 2013-11-27  

这是我的上传
package com.sp.controller;

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.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/editk")
public class KindEditorController {
private static final ObjectMapper objectMapper = new ObjectMapper();
private PrintWriter writer = null;

@SuppressWarnings("rawtypes")
@RequestMapping(value = "file_upload", method = RequestMethod.POST)
public void fileUpload(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException,
FileUploadException {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);

System.out.println("isMultipart-----------------------" + isMultipart);
System.out.println("request--------------------------" + request);

ServletContext application = request.getSession().getServletContext();
String savePath = application.getRealPath("/") + "editK/attached/";

// 文件保存目录URL
String saveUrl = request.getContextPath() + "/editK/attached/";

// 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");
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.reset();
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
writer = response.getWriter();
// writer.println(json); //想办法把map转成json

if (!ServletFileUpload.isMultipartContent(request)) {
writer.println(objectMapper.writeValueAsString(getError("请选择文件。")));
return;

}
// 检查目录
File uploadDir = new File(savePath);
if (!uploadDir.isDirectory()) {
writer.println(objectMapper
.writeValueAsString(getError("上传目录不存在。")));
return;
}
// 检查目录写权限
if (!uploadDir.canWrite()) {
writer.println(objectMapper
.writeValueAsString(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(objectMapper.writeValueAsString(getError("目录名不正确。")));
return;
}
// 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");
List items = upload.parseRequest(request);
System.out.println(items.size());
Iterator itr = items.iterator();
while (itr.hasNext()) {
FileItem item = (FileItem) itr.next();
String fileName = item.getName();
if (!item.isFormField()) {
// 检查文件大小
if (item.getSize() > maxSize) {
writer.println(objectMapper
.writeValueAsString(getError("上传文件大小超过限制。")));
}
// 检查扩展名
String fileExt = fileName.substring(
fileName.lastIndexOf(".") + 1).toLowerCase();
if (!Arrays.<String> asList(extMap.get(dirName).split(","))
.contains(fileExt)) {
writer.println(objectMapper
.writeValueAsString(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;
}

SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
String newFileName = df.format(new Date()) + "_"
+ new Random().nextInt(1000) + "." + fileExt;
try {
File uploadedFile = new File(savePath, newFileName);
item.write(uploadedFile);
} catch (Exception e) {
writer.println(objectMapper
.writeValueAsString(getError("上传文件失败。")));
}

Map<String, Object> msg = new HashMap<String, Object>();
msg.put("error", 0);
msg.put("url", saveUrl + newFileName);
writer.println(objectMapper.writeValueAsString(msg));
return;
}
}
return;
}

private Map<String, Object> getError(String message) {
Map<String, Object> msg = new HashMap<String, Object>();
msg.put("error", 1);
msg.put("message", message);
return msg;
}

@SuppressWarnings({ "unchecked", "rawtypes" })
@RequestMapping(value = "file_manager", 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("/") + "editK/attached/";
// 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/
String rootUrl = request.getContextPath() + "/editK/attached/";
// 图片扩展名
String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png", "bmp" };

String dirName = request.getParameter("dir");
if (dirName != null) {
if (!Arrays.<String> 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<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());
}
Map<String, Object> msg = new HashMap<String, Object>();
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);
}

@SuppressWarnings("rawtypes")
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"));
}
}
}

@SuppressWarnings("rawtypes")
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;
}
}
}
}

@SuppressWarnings("rawtypes")
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"));
}
}
}
}

1 楼 du_bo 2013-11-27  

重写  org.springframework.web.multipart.commons.CommonsMultipartResolver 类中的
     isMultipart 方法
这个杂么弄。。能给个例子吗