注释还可以动态地提取HTTP请求中的信息，以及把应用程序生成的异常映射到http响应码。
Annotations can also dynamically extract information from HTTP requests and map application-generated exceptions to HTTP response codes.
为调用应用程序提供了特定于应用程序的信息，比如状态码和出错页面。
Application-specific information, like status codes and error pages, are provided for the calling application.
一些重要的车辆信息，比如当前的里程数、车辆识别码和OnStar的账号信息也可以在程序中进行查询。
Important vehicle information, such as current odometer reading, vehicle VIN and OnStar account number also will be readily accessible within the apps.
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