SpringMVC+kindEditor批量上传图片详细解析

水深无声 2022-08-18 13:23 166阅读 0赞

首先去官网下载jar包：http://kindeditor.net/down.php

将jar包解压放到项目中

在jsp界面中引入jar包中的js

在jsp中加入

在<script>中写事件

var editor;
    	KindEditor.ready(function(K) {
    		editor = K.create('textarea[name="productHTML"]', {
    			uploadJson : '${ctx}/manage/upload/imageUpload.action',//服务器端的地址
                allowImageUpload  : true//运行上传图片
    		});
    	});

后台，kindEditor的批量上传，是使用ajax一个图片一个图片的上传的，

注意返回的数据一定要是json类型的，否则图片不会插入到textarea中

@Controller
    @RequestMapping("/manage/upload")
    public class ImageUploadAction {
    	
    	@RequestMapping("/imageUpload")
    	@ResponseBody
    	public JSONObject save(HttpServletRequest request,HttpServletResponse response){
    		HashMap<String, String> extMap = new HashMap<String, String>();
    		//支持的文件类型
    		extMap.put("image", "jpg,jpeg,png,bmp"); 
    		//最大文件大小  
            long maxSize = 32505856;  
            
            //是否选择文件
            if(!ServletFileUpload.isMultipartContent(request)){  
            	return getError("请选择文件!");
            }  
            
            //获取文件类型
            String dirName = request.getParameter("dir");
            if (dirName == null) {
            	dirName = "image";
            }
            
            if(!ServletFileUpload.isMultipartContent(request)){
            	return getError("请选择文件!");
            }
            
            MultipartHttpServletRequest mrequest= (MultipartHttpServletRequest)request;
            Map map=mrequest.getFileMap();
            Collection<MultipartFile> c = map.values();
            Iterator item = c.iterator();
            
            //遍历选择的图片
            JSONObject obj =null;
            while (item.hasNext()) {
            	CommonsMultipartFile file=(CommonsMultipartFile) item.next();
            	FileItem fileItem=file.getFileItem();
            	long fileSize = file.getSize();
        		//检查文件大小
        		if(file.getSize() > maxSize){
        			return getError("上传文件大小超过限制。");
        		}
        		//检查扩展名
        		String fileExt = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".") + 1).toLowerCase();
        		if(!Arrays.<String>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。");
        		}
        		
        		//上传到服务器上去
        		Map<String,String> params = new HashMap<String, String>();
        		params.put("fsd", "sdf");
        		Map<String, String> headers = new HashMap<String, String>();
        		String s;
    			try {
    				
    				s = HttpUtil.uploadimage(fileItem.getInputStream(),params,headers);//上传到远程服务器
    				JSONObject resultJson = JSONObject.fromObject(s);
    	    		obj =new JSONObject();
    	    		if("1".equals(resultJson.getString("rs"))){
    	    			String[] urls=resultJson.getString("paths").split("\"");
    	    			obj.put("error", 0);
    	    			if(urls.length==3){
    	    				obj.put("url", urls[1]);
    	    			}
    	    			return obj;
    	    		}else{
    	    			return getError(resultJson.getString("msg"));
    	    		}
    	    		
    			} catch (IOException e) {
    				return getError("服务器异常！请稍后重试！");
    			}
            }
            return getError("未知错误！请稍候");
    	}
    	
    	private static JSONObject getError(String message){
    		JSONObject obj =new JSONObject();
    		obj.put("error", 1);
    		obj.put("message", message);
    		return obj;
    	}
    }

public static String uploadimage(InputStream ins, Map<String, String> params, Map<String, String> headers) {
    		OutputStream out = null;
    		DataInputStream in = null;
    		HttpURLConnection con = null;
    		HttpURLConnection conn = null;
    		try {
    			URL urlObj = new URL(REMOTE_UPLOAD_PIC + "?" + sendParams(params));
    			con = (HttpURLConnection) urlObj.openConnection();
    
    			/**
    			 * 设置关键值
    			 */
    			con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式
    			con.setDoInput(true);
    			con.setDoOutput(true);
    			con.setUseCaches(false); // post方式不能使用缓存
    	
    			// 设置请求头信息
    			con.setRequestProperty("Connection", "Keep-Alive");
    			con.setRequestProperty("Charset", "UTF-8");
    			con.setConnectTimeout(15000);
    			con.setReadTimeout(6000);
    			// 设置边界
    			String BOUNDARY = "----------" + System.currentTimeMillis();
    			con.setRequestProperty("Content-Type", "multipart/form-data; boundary="	+ BOUNDARY);
    	
    			// 请求正文信息
    	
    			// 第一部分：
    			StringBuilder sb = new StringBuilder();
    			sb.append("--"); // 必须多两道线
    			sb.append(BOUNDARY);
    			sb.append("\r\n");
    			sb.append("Content-Disposition: form-data;name=\"myFile\";filename=\"" + "abc.jpg" + "\"\r\n");
    			
    			/*String suffix = imageUrl.substring(imageUrl.lastIndexOf(".") + 1);
    			String cType = ContentTypeEnum.valueOf(suffix.toUpperCase()).getCtype();*/
    			
    			sb.append("Content-Type:image/png\r\n\r\n");
    	
    			byte[] head = sb.toString().getBytes("utf-8");
    	
    			// 获得输出流
    	
    			out = new DataOutputStream(con.getOutputStream());
    			out.write(head);
    			
    			
    			/*URL readIn = new URL(imageUrl);
    			conn = (HttpURLConnection) readIn.openConnection();
    			for (Map.Entry<String, String> e : headers.entrySet()) {
    				conn.addRequestProperty(e.getKey(), e.getValue());
    			}
    			conn.setConnectTimeout(15000);
    			conn.setReadTimeout(6000);*/
    			// 文件正文部分
    			in = new DataInputStream(ins);
    			int bytes = 0;
    			byte[] bufferOut = new byte[1024];
    			while ((bytes = in.read(bufferOut)) != -1) {
    				out.write(bufferOut, 0, bytes);
    			}
    		
    	
    			// 结尾部分
    			byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
    	
    			out.write(foot);
    	
    			out.flush();
    	
    			/**
    			 * 读取服务器响应，必须读取,否则提交不成功
    			 */
    			if (con.getResponseCode()==200) {
    				String saaUrl = readResponse(con);
    				//log.info("HttpUtil.uploadimage success ["+imageUrl+","+params+"]");
    				return saaUrl;
    			} else {
    				//log.info("HttpUtil.uploadimage failed ["+imageUrl+","+params+"]");
    				return "{\"rs\":-1}";
    			}
    
    		} catch (FileNotFoundException e) {
    			//log.error("HttpUtil.uploadimage["+imageUrl+","+params+"]", e);
    			return "{\"rs\":2}";
    		} catch (Exception e) {
    			//log.error("HttpUtil.uploadimage["+imageUrl+","+params+"]", e);
    			return "{\"rs\":1}";
    		} finally{
    			if(in!=null){
    				try {
    					in.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			if(out!=null){
    				try {
    					out.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			if(con!=null){
    				con.disconnect();
    			}
    			if(conn!=null){
    				conn.disconnect();
    			}
    		}
    	}

谢谢支持，多少都行

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4MzMxNTQ_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4MzMxNTQ_size_16_color_FFFFFF_t_70]: /images/20220731/0b973e514792402daf0cc8ce6289f379.png