@At("/addPic")
    @POST
    @AdaptBy(type = UploadAdaptor.class,args={"${app.root}/WEB-INF/tmp/release", "8192", "utf-8", "20000", "10485760"})
    public Object uploadPic(@Param("file") TempFile tf, HttpServletRequest req,AdaptorErrorContext err){
        NutMap re=new NutMap();
        String msg=null;
        String path;
        if(err!=null&&err.getAdaptorErr()!=null) {
            msg = "文件大小不符合规定";
        }else if(tf==null){
            msg="空文件";
        }else{
            try (InputStream ins = tf.getInputStream()) {
                BufferedImage image = Images.read(ins);
                image = Images.zoomScale(image, 512, 512, Color.WHITE);
                String basepath=req.getServletContext().getRealPath("articleImg/release/");
                File directory = new File(basepath);
                if (!directory.exists()) {
                    directory.mkdirs();
                }
                path=R.UU16();
                Images.writeJpeg(image, new File(basepath+ path+".jpg"), 0.8f);
            } catch(DaoException e) {
                e.printStackTrace();
                msg = "系统错误";
            } catch (Throwable e) {
                msg = "图片格式错误";
            }
        }
        if(msg!=null){
            return re.setv("ok",false).setv("msg",msg);
        }
        return re.setv("ok",true).setv("path","sss");
    }

上传完文件返回

{
	"data": "{\n   \"ok\": true,\n   \"path\": \"sss\"\n}",
	"statusCode": 200,
	"errMsg": "uploadFile:ok"
}

想不明白。其他方法也是这样返回，格式是对的，
有什么办法解决吗