通过saveDocument()接口保存文件

Button("保存文件")
          .fontSize(12)
          .onClick(async () => {
            let uri = 'file://docs/storage/Users/currentUser' + '/outputPdf'; //保存后文件存储路径
            let fileUri: fileuri.FileUri = new fileuri.FileUri(uri);
            let path = fileUri.path;
            fs.mkdir(path);
            const result: boolean = this.document.saveDocument(path + '/output.pdf'); //保存文件
            if (result) {
              this.showDialog('PDF保存成功', '存储路径为：用户目录/outputPdf');
            } else {
              this.showDialog('PDF保存失败', '请检查用户权限');
            }
          }).margin({ left: 15 })