与GridJs服务器端配合工作

与GridJs服务器端配合工作

1. 在startup.cs的ConfigureServices中添加服务

   services.AddScoped<IGridJsService, GridJsService>();

2. 设置缓存文件存储路径

你可以选择以下任意方法：

选项1：在Startup.cs的ConfigureServices中设置GridJsOptions

   services.Configure<GridJsOptions>(options =>
	{
		options.FileCacheDirectory = TestConfig.TempDir;
	});

选项2：直接设置静态属性

   Config.FileCacheDirectory = TestConfig.TempDir;

选项3：通过实现GridCacheForStream定义你自己的缓存存储规则

对于本地文件存储，这里有一个示例：

  public class LocalFileCache  : GridCacheForStream
    {
        public LocalFileCache()
        {
            string streampath = Path.Combine(Config.FileCacheDirectory, "streamcache");
            if (!Directory.Exists(streampath))
            {
                //create cache directory if not exists
                Directory.CreateDirectory(streampath);
               
            }
        }
        /// <summary>
        /// Implement this method to savecache,save the stream to the cache object with the key id.
        /// </summary>
        /// <param name="s">the source stream </param>
        /// <param name="uid">he key id.</param>
        public override void SaveStream(Stream s, String uid)
        {
            String filepath = Path.Combine(Config.FileCacheDirectory + Path.DirectorySeparatorChar + "streamcache", uid.Replace('/', '.'));
            using (FileStream fs = new FileStream(filepath, FileMode.Create))
            {
                s.Position = 0;
                s.CopyTo(fs);
            }

        }

        /// <summary>
        /// Implement this method to loadcache with the key uid,return the stream from the cache object.
        /// </summary>
        /// <param name="uid">the key id</param>
        /// <returns>the stream from  the cache</returns>
        public override Stream LoadStream(String uid)
        {
            String filepath = Path.Combine(Config.FileCacheDirectory + Path.DirectorySeparatorChar + "streamcache", uid.Replace('/', '.'));
            FileStream fs = new FileStream(filepath, FileMode.Open);
            return fs;
        }
        /// <summary>
        ///  implement the url in action controller  to get the file
        /// </summary>
        /// <param name="uid">the key id</param>
        /// <returns></returns>
        public override String GetFileUrl(string uid)
        {
            return "/GridJs2/GetFile?id=" + uid;
        }

    }

对于服务器端存储，我们还提供了示例。请查看：

https://github.com/aspose-cells/Aspose.Cells-for-.NET/blob/master/Examples_GridJs/Models/AwsCache.cs

关于存储的更多详细信息，请参考指南

3. 实现控制器动作

1. 创建一个扩展自GridJsControllerBase的控制器

public class GridJs2Controller : GridJsControllerBase

2. 在动作中获取JSON

在你的操作中获取JSON数据有两种方法：

选项1：使用GridJsWorkbook

GridJsWorkbook wbj = new GridJsWorkbook();
Workbook wb = new Workbook(fullFilePath); 
wbj.ImportExcelFile(wb);
String ret =wbj.ExportToJson(fileName);

选项2：在GridJsControllerBase中使用IGridJsService

 String uid= GridJsWorkbook.GetUidForFile(fileName)
 StringBuilder ret= _gridJsService.DetailFileJsonWithUid(fullFilePath, uid);

有关详细信息，请查看此处的示例： https://github.com/aspose-cells/Aspose.Cells-for-.NET/tree/master/Examples_GridJs