layui富文本编辑器添加图片回显问题详解

最近写项目中需要用到LayUI富文本编辑器,其他地方都挺好,唯独上传图片时,要不就是上传完成后回显404,要不就是访问时404(访问时我是新打开的一个页面),返回路径一直有问题,之后把返回的路径改成绝对路径就可以。

效果图如下:

layui富文本编辑器添加图片回显问题详解_第1张图片

layui富文本编辑器添加图片回显问题详解_第2张图片

先添加上传图片接口,layui会自动传递参数,后台直接写对应的上传方法就行了。

layui富文本编辑器添加图片回显问题详解_第3张图片

var layedit = layui.layedit;
layedit.set({	//设置图片接口
  	uploadImage: {
	    url: 'layUITextarea/upload', //接口url
	    type: 'post'
  	}
});

后台上传完成后需要返回四个参数,layui自定义接收显示(不返回图片无法显示)

layui前台接收返回的数据格式为:

{
      "code": 0,      //0表示成功,其他表示失败
      "msg": "",       //提示信息,//一般上传失败后返回
      "data":  {
           "src": "图片路径",
           "title":  "图片名称"    //可选
      }
}

所以后台返回需要返回这几个参数

//上传
@RequestMapping(value="/upload")
@ResponseBody
public Object upload(MultipartFile file) {
	String filename = file.getOriginalFilename();
	String uuid = UUID.randomUUID().toString();
    //上传的方法在Service层写的,这里直接调用的
	boolean boole = pService.savefile(file, uuid);
	if (boole) {
		Map map = new HashMap();
		Map map2 = new HashMap();
		map.put("code", 0);	//0表示上传成功
		map.put("msg","上传成功"); //提示消息
                //src返回图片上传成功后的下载路径,这里直接给绝对路径
		map2.put("src", "http://localhost/layUITextarea/download?uuid="+uuid);
		map2.put("title", filename);
		map.put("data", map2);
		return map;
	} else {
		return new AjaxResult(true, file.getOriginalFilename());
	}
}
//下载方法
@RequestMapping(value = "/download")
@ResponseBody
private void download(String uuid, HttpServletRequest request, HttpServletResponse response) {
    fileService.download(uuid, request, response);
}

Service层上传下载部分代码。

@Service
public class FileService extends CommonService {
    @Autowired
    private FileRepository fileRepository;
    // 图片存放位置
    private final static String IMAGEPATH="e:\\layui\\image";

    //保存图片
    @Transactional
    public boolean savefile(MultipartFile file, String uuid){
        try{
            File path = path(file.getContentType());
            String filename = file.getOriginalFilename();
            FileImg fileEntity = new FileImg();
            SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date date=new Date();
            fileEntity.setFileName(filename);
            fileEntity.setUuid(uuid);
            String storeaddress = path.getAbsolutePath();
            fileEntity.setStoreaddress(storeaddress);
            File saveFile = new File(path,uuid);
            try {
                fileRepository.save(fileEntity);
                file.transferTo(saveFile);
                return true;
            } catch (IllegalStateException | IOException e) {
                e.printStackTrace();
                return false;
            }
        }catch (Exception e){
            System.out.println("图片保存异常");
            return false;
        }
    }

    //图片地址是否存在
    private File path(String filename) {
        File pat=new File("e:\\layui");
        File path = new File(FileService.IMAGEPATH);
        if(!pat.isDirectory()) {
            pat.mkdir();
        }
        if(!path.isDirectory()) {
            path.mkdir();
        }
        return path;
    }

    /**
     * 下载
     * @param uuid
     * @param request
     * @param response
     */
    public void download(String uuid, HttpServletRequest request, HttpServletResponse response) {
        FileImg fileentity = fileRepository.findByUuid(uuid);
        String filename = fileentity.getFileName();
        filename = getStr(request, filename);
        File file = new File(fileentity.getStoreaddress(), uuid);
        if(file.exists()) {
            FileInputStream fis;
            try {
                fis = new FileInputStream(file);
                response.setContentType("application/x-msdownload");
                response.addHeader("Content-Disposition", "attachment; filename=" + filename );
                ServletOutputStream out = response.getOutputStream();
                byte[] buf=new byte[2048];
                int n=0;
                while((n=fis.read(buf))!=-1){
                    out.write(buf, 0, n);
                }
                fis.close();
                out.flush();
                out.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    private String getStr(HttpServletRequest request, String fileName) {
        String downloadFileName = null;
        String agent = request.getHeader("USER-AGENT");
        try {
            if(agent != null && agent.toLowerCase().indexOf("firefox") > 0){
                //downloadFileName = "=?UTF-8?B?" + (new String(Base64Utils.encode(fileName.getBytes("UTF-8")))) + "?=";
                //设置字符集
                downloadFileName = "=?UTF-8?B?" + Base64Utils.encodeToString(fileName.getBytes("UTF-8")) + "?=";
            }else{
                downloadFileName =  java.net.URLEncoder.encode(fileName, "UTF-8");
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return downloadFileName;
    }
}

后台返回src路径时最好加绝对路径,不然添加访问时图片路径会404

关于layui富文本域form表单提交和ajax提交可以访问:https://blog.csdn.net/qq_40205116/article/details/89433623

layui富文本域完整案例:https://blog.csdn.net/qq_40205116/article/details/89536834

你可能感兴趣的:(前端,LayUI)