feat: 完善注册流程的文件上传功能

lrj

昨天 9f8395fab13ca4b230a0f7d62636e209745c91d4

 backend/src/main/java/com/rongyichuang/common/api/MediaGraphqlApi.java

@@ -85,12 +85,24 @@
        r.setMediaType(m.getMediaType());
        r.setTargetType(m.getTargetType());
        r.setTargetId(m.getTargetId());
        r.setThumbPath(m.getThumbPath());
        r.setDuration(m.getDuration());
        r.setDescription(m.getDescription());
        
        // 追加 fullUrl（前端也可自行拼接）
        if (mediaBaseUrl != null && !mediaBaseUrl.isEmpty() && m.getPath() != null) {
            String base = mediaBaseUrl.endsWith("/") ? mediaBaseUrl.substring(0, mediaBaseUrl.length() - 1) : mediaBaseUrl;
            String p = m.getPath().startsWith("/") ? m.getPath() : ("/" + m.getPath());
            r.setFullUrl(base + p);
        }
        
        // 追加 fullThumbUrl
        if (mediaBaseUrl != null && !mediaBaseUrl.isEmpty() && m.getThumbPath() != null) {
            String base = mediaBaseUrl.endsWith("/") ? mediaBaseUrl.substring(0, mediaBaseUrl.length() - 1) : mediaBaseUrl;
            String p = m.getThumbPath().startsWith("/") ? m.getThumbPath() : ("/" + m.getThumbPath());
            r.setFullThumbUrl(base + p);
        }
        
        return r;
    }

@@ -100,18 +112,37 @@
        System.out.println("输入参数: " + input);
        System.out.println("targetType: " + input.getTargetType());
        System.out.println("targetId: " + input.getTargetId());
        System.out.println("thumbPath: " + input.getThumbPath());
        
        try {
            Media result = mediaService.saveMedia(
                input.getName(),
                input.getPath(),
                input.getFileSize(),
                input.getFileExt(),
                input.getMediaType(),
                input.getTargetType(),
                input.getTargetId()
            );
            System.out.println("保存成功，媒体ID: " + result.getId());
            Media result;
            
            // 如果有缩略图路径，使用支持缩略图的方法
            if (input.getThumbPath() != null && !input.getThumbPath().trim().isEmpty()) {
                result = mediaService.saveMedia(
                    input.getName(),
                    input.getPath(),
                    input.getFileSize(),
                    input.getFileExt(),
                    input.getMediaType(),
                    input.getTargetType(),
                    input.getTargetId(),
                    input.getThumbPath()
                );
                System.out.println("保存成功（含缩略图），媒体ID: " + result.getId());
            } else {
                result = mediaService.saveMedia(
                    input.getName(),
                    input.getPath(),
                    input.getFileSize(),
                    input.getFileExt(),
                    input.getMediaType(),
                    input.getTargetType(),
                    input.getTargetId()
                );
                System.out.println("保存成功，媒体ID: " + result.getId());
            }
            
            return result;
        } catch (Exception e) {
            System.err.println("保存媒体失败: " + e.getMessage());