亲爱的Strongloop社区
我正在遵循由环回提供的用于评估本地存储数据存储的示例。
它工作正常，我可以使用其余的API从本地文件系统(用作数据源)创建和检索文件。
我不得不使用“$ npm install loopback-component-storage --save”。
datasource.json中定义的数据源为:
{
"db": {
"name": "db",
"connector": "memory"
},
"localFileSystemStorage": {
"name": "localFileSystemStorage",
"connector": "loopback-component-storage",
"provider": "filesystem",
"root": "./property_data"
}
}
./property_data目录是所有数据的存储位置。 (相对于项目目录)，我可以无休止地访问它。接下来，我试图生成Angular服务组件，以便可以使用Angular应用程序连接到回送服务器。因此，在客户端目录中，我执行了:
../example-2.0/client$ lb-ng ../server/server.js js/lb-services.js
，但失败:
/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/providers/filesystem/index.js:25
throw new Error('FileSystemProvider: Path does not exist: ' + this.root);
^
Error: FileSystemProvider: Path does not exist: ./server/storage
at new FileSystemProvider (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/providers/filesystem/index.js:25:11)
at Object.module.exports.createClient (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/providers/filesystem/index.js:17:10)
at Object.createClient (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/factory.js:86:18)
at new StorageService (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/storage-service.js:29:25)
at Object.exports.initialize (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-component-storage/lib/storage-connector.js:12:19)
at DataSource.setup (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-datasource-juggler/lib/datasource.js:332:17)
at new DataSource (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback-datasource-juggler/lib/datasource.js:109:8)
at Registry.createDataSource (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback/lib/registry.js:349:12)
at dataSourcesFromConfig (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback/lib/application.js:415:19)
at EventEmitter.app.dataSource (/home/eval/projects/loopback-component-storage/example-2.0/node_modules/loopback/lib/application.js:222:12)
我缺少什么吗？
我真的可以在这里使用一些帮助。
谢谢
最佳答案
在datasource.json文件中，您提供了相对于./property_data文件夹的相对路径/server。
因此，您只需要从该文件夹调用任何方法。
现在，当您通过服务器运行它时，您是从/server文件夹运行的，这就是为什么它运行没有问题，但是对于有 Angular 的Sdk生成，您是从client/文件夹运行的。因此产生了Path does not exist错误。
因此正确的语法将是:
../example-2.0/server$ lb-ng server.js ../client/js/lb-services.js