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 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,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.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;
	}
}