The most important such information is a small set of character stringsdescribing attributes of the object being requested , including its uri , filename , content - type and content - encoding ( these being filled in bythe translation and type - check handlers which handle the request , respectively ) 這些信息中最重要的是一個小的字符串的集合,他們描述了被請求對象的屬性,包括它的uri ,文件名,內(nèi)容類型和內(nèi)容編碼(它們在處理請求時,被分別填入翻譯和類型檢查句柄) 。