项目中使用 kindeditor 的图片上传功能

在官网上下载demo, 因为我用的是 java, 所以使用的是 jsp 的demo

demo 很简单, 直接创建一个web项目, 将kindeditor的东西放入webContent(eclipse项目)下, 将jar包放入lib, 直接运行, 访问即可

需要用到以下jar包(如果项目中有用到json的包, json_simple的包可以不加)



然后可以将kindeditor集成到项目中(我的项目中已经有kindeditor, 只是图片上传功能没有), 将 file_manager_json.jsp, upload_json.jsp 拷贝到项目中, 并且在项目中需要用到图片上传的编辑器中设置

ps: 我的项目仅仅是加图片上传, 所以写的比较简单

如: 

我用的是sturts2, 所以需要将upload_json.jsp中的内容写成一个action

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

var productIntroEditor = KindEditor.create("#productIntro",{
resizeType : 0,
allowPreviewEmoticons : false,
allowImageUpload : false,
//uploadJson : 'lib/kindeditor/upload/upload_json.jsp',
uploadJson : "<%=basePath%>ajax/uploadImg.do",//需要加上basePath, 不然批量上传调用action时会出现路径问题
fileManagerJson : 'lib/kindeditor/upload/file_manager_json.jsp',
allowImageUpload : true,
allowFileManager : true,
items : [
'fontname', 'fontsize', '|', 'forecolor', 'hilitecolor', 'subscript', 'superscript', 'bold', 'italic', 'underline',
'removeformat', '|', 'justifyleft', 'justifycenter', 'justifyright', 'insertorderedlist',
'insertunorderedlist', '|', 'emoticons', 'image','multiimage', 'link', '|', 'preview', 'source', 'fullscreen']
});

upload_json.jsp 中的内容转成的action内容如下

其中的一些属性是配置在资源文件中的, 主要是存储路径和显示的url

package com.hitv.lease.webapp.struts2.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper;
import org.json.JSONException;
import org.json.JSONObject;

import com.opensymphony.xwork2.ActionSupport;

/**
* kindeditor 图片上传类(单个图片上传)
* @author lijinlong
*
*/
public class KindEditorUploadAction extends ActionSupport{

/**
*
*/
private static final long serialVersionUID = -5324165857715375773L;
private Logger log = Logger.getLogger(this.getClass());
private String imgPath;//存储路径, 绝对路径
private String imgUrl;//显示url, 相对路径
private String ip;
private String port;
private String context;

public String uploadImg() throws FileUploadException, IOException, JSONException{
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
PrintWriter out = response.getWriter();

String savePath = imgPath + File.separator;
File test = new File(savePath);
if(!test.exists()){
test.mkdirs();
}
//文件保存目录URL
String saveUrl = imgUrl + File.separator;

//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.print(getError("请选择文件。"));
return "err";
}
//检查目录
File uploadDir = new File(savePath);
if(!uploadDir.isDirectory()){
out.print(getError("上传目录不存在。"));
return "err";
}
//检查目录写权限
if(!uploadDir.canWrite()){
out.print(getError("上传目录没有写权限。"));
return "err";
}

String dirName = request.getParameter("dir");
if (dirName == null) {
dirName = "image";
}
if(!extMap.containsKey(dirName)){
out.print(getError("目录名不正确。"));
return "err";
}
//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();
}

MultiPartRequestWrapper wrapper = (MultiPartRequestWrapper)request;
String fileName = wrapper.getFileNames("imgFile")[0];
File file = wrapper.getFiles("imgFile")[0];

String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
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。"));

}
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;

saveUrl += newFileName;

FileOutputStream fos = new FileOutputStream(savePath + newFileName);
byte[] buffer = new byte[1024];
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 {
try{
if(in != null)
in.close();
if(fos != null)
fos.close();
}catch(IOException e){}
}

JSONObject obj = new JSONObject();
obj.put("error", 0);
obj.put("url", "http://"+this.getIp() + ":" + this.getPort()+saveUrl);
obj.put("url", "http://127.0.0.1:8082/imageServer/"+saveUrl);
System.out.println(saveUrl);
out.print(obj.toString());

return null;
}
private String getError(String message) throws JSONException {
JSONObject obj = new JSONObject();
obj.put("error", 1);
obj.put("message", message);
return obj.toString();
}

public String getImgPath() {
return imgPath;
}
public void setImgPath(String imgPath) {
this.imgPath = imgPath;
}

public String getIp() {
return ip;
}

public void setIp(String ip) {
this.ip = ip;
}

public String getPort() {
return port;
}

public void setPort(String port) {
this.port = port;
}

public String getContext() {
return context;
}

public void setContext(String context) {
this.context = context;
}
public String getImgUrl() {
return imgUrl;
}
public void setImgUrl(String imgUrl) {
this.imgUrl = imgUrl;
}
}