使用kindeditor 4.1.7 编辑器 注意事项，上传图片失败 问题 ，

<script charset="utf-8" src="editor/kindeditor.js"></script>
<script charset="utf-8" src="editor/lang/zh_CN.js"></script>

KindEditor.ready(function(K) {
window.editor = K.create('#desc',{
resizeType : 1,
allowPreviewEmoticons : false,
allowImageUpload : true,

uploadJson: '<%=basePath%>editor/jsp/upload_json.jsp',
items : [
'fontname', 'fontsize', '|', 'forecolor', 'hilitecolor', 'bold', 'italic', 'underline',
'removeformat', '|', 'justifyleft', 'justifycenter', 'justifyright', 'insertorderedlist',
'insertunorderedlist', '|', 'image', 'link']//'emoticons',
});
});

1.路径不存在，可以自己加upload_json.jsp 断点 ，

2.默认是php 的图片上传 ，在plugins/image/image.js(类似文件)  中查找php/upload_json.php 换成对应jsp.

3.注意 upload_json.jsp中 这两个路径

　　　　String savePath = pageContext.getServletContext().getRealPath("/") + "editor/attached/";

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

以上你都可以在页面加断点 看到，并自行修改

4. 文件上传失败

　　

FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
List items = upload.parseRequest(request);
Iterator itr = items.iterator();
while (itr.hasNext()) {
    FileItem item = (FileItem) itr.next();
    String fileName = item.getName();
    long fileSize = item.getSize();
    if (!item.isFormField()) {
        //检查文件大小
        if(item.getSize() > maxSize){
            out.println(getError("上传文件大小超过限制。"));
            return;
        }
        //检查扩展名
        String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
        if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
            out.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;
        }

        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){
            out.println(getError("上传文件失败。"));
            return;
        }

这一段可能由于struts的问题无法上传  ，可以替换为

　　

//fdsfds
MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper) request;
//获得上传的文件名
String fileName = wrapper.getFileNames("imgFile")[0];//imgFile,imgFile,imgFile
//获得文件过滤器
File file = wrapper.getFiles("imgFile")[0];   

//检查扩展名
String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
    out.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;
}
//检查文件大小
if (file.length() > maxSize) {
        out.println(getError("上传文件大小超过限制。"));
        return;
}    

//重构上传图片的名称
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
String newImgName = df.format(new Date()) + "_"
                + new Random().nextInt(1000) + "." + fileExt;
byte[] buffer = new byte[1024];
//获取文件输出流
FileOutputStream fos = new FileOutputStream(savePath +"/" + newImgName);
//获取内存中当前文件输入流
InputStream in = new FileInputStream(file);
try {
        int num = 0;
        while ((num = in.read(buffer)) > 0) {
                fos.write(buffer, 0, num);
        }
} catch (Exception e) {
        e.printStackTrace(System.err);
} finally {
        in.close();
        fos.close();
}
JSONObject obj = new JSONObject();
obj.put("error", 0);
obj.put("url", saveUrl + newImgName);
out.println(obj.toJSONString());
//fdsfs

副upload_json.jsp 文件：

　　

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page import="java.util.*,java.io.*" %>
<%@ page import="java.text.SimpleDateFormat" %>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import="org.apache.commons.fileupload.disk.*" %>
<%@ page import="org.apache.commons.fileupload.servlet.*" %>
<%@ page import="org.json.simple.*" %>
<%@ page import="org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper" %>
<%

/**
 * KindEditor JSP
 *
 * 本JSP程序是演示程序，建议不要直接在实际项目中使用。
 * 如果您确定直接使用本程序，使用之前请仔细确认相关安全设置。
 *
 */

//文件保存目录路径
String savePath = pageContext.getServletContext().getRealPath("/") + "editor/attached/";

//文件保存目录URL
String saveUrl  = request.getContextPath() + "/editor/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.setContentType("text/html; charset=UTF-8");

if(!ServletFileUpload.isMultipartContent(request)){
    out.println(getError("请选择文件。"));
    return;
}
//检查目录
File uploadDir = new File(savePath);
if(!uploadDir.isDirectory()){
    System.out.println(savePath);
    out.println(getError("上传目录不存在。"));
    return;
}
//检查目录写权限
if(!uploadDir.canWrite()){
    out.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)){
    out.println(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();
}
//fdsfds
MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper) request;
//获得上传的文件名
String fileName = wrapper.getFileNames("imgFile")[0];//imgFile,imgFile,imgFile
//获得文件过滤器
File file = wrapper.getFiles("imgFile")[0];   

//检查扩展名
String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
    out.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;
}
//检查文件大小
if (file.length() > maxSize) {
        out.println(getError("上传文件大小超过限制。"));
        return;
}    

//重构上传图片的名称
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
String newImgName = df.format(new Date()) + "_"
                + new Random().nextInt(1000) + "." + fileExt;
byte[] buffer = new byte[1024];
//获取文件输出流
FileOutputStream fos = new FileOutputStream(savePath +"/" + newImgName);
//获取内存中当前文件输入流
InputStream in = new FileInputStream(file);
try {
        int num = 0;
        while ((num = in.read(buffer)) > 0) {
                fos.write(buffer, 0, num);
        }
} catch (Exception e) {
        e.printStackTrace(System.err);
} finally {
        in.close();
        fos.close();
}
JSONObject obj = new JSONObject();
obj.put("error", 0);
obj.put("url", saveUrl + newImgName);
out.println(obj.toJSONString());
//fdsfs
//缩略图
//缩略图

%>
<%!
private String getError(String message) {
    JSONObject obj = new JSONObject();
    obj.put("error", 1);
    obj.put("message", message);
    return obj.toJSONString();
}
%>