在发出HTTP DELETE请求时,请求URI应该完全标识要删除的资源。但是,是否允许添加额外的元数据作为请求实体主体的一部分?


当前回答

2014年更新的HTTP 1.1规范(RFC 7231)明确地允许在DELETE请求中使用实体:

DELETE请求消息中的有效负载没有定义的语义;在DELETE请求上发送有效负载主体可能会导致某些现有实现拒绝该请求。

其他回答

2014年更新的HTTP 1.1规范(RFC 7231)明确地允许在DELETE请求中使用实体:

DELETE请求消息中的有效负载没有定义的语义;在DELETE请求上发送有效负载主体可能会导致某些现有实现拒绝该请求。

实际答案:不

有些客户端和服务器会忽略甚至删除delete请求中的主体。在极少数情况下,它们会失败并返回错误。

对Body使用DELETE是有风险的…比起REST,我更喜欢这种列表操作方法:

常规操作

GET /objects/获取所有对象

GET /object/ID获取指定ID的对象

POST /objects添加一个新对象

PUT /object/ID添加指定ID的对象,更新对象

DELETE /object/ID删除指定ID的对象

所有自定义操作都是POST

POST /objects/addList添加body中包含的对象列表或数组

POST /objects/deleteList删除包含在body中的对象列表

POST /objects/customQuery基于body中的自定义查询创建一个List

如果客户不支持您的扩展操作,他们可以以常规方式工作。

也许下面的GitHUb url会帮助你,得到答案。 实际上,应用服务器,如Tomcat, Weblogic拒绝HTTP。带请求有效负载的DELETE调用。所以记住这些东西,我已经在github中添加了例子,请看看

https://github.com/ashish720/spring-examples

在我看来,RFC 2616并没有规定这一点。

从第4.3节开始:

The presence of a message-body in a request is signaled by the inclusion of a Content-Length or Transfer-Encoding header field in the request's message-headers. A message-body MUST NOT be included in a request if the specification of the request method (section 5.1.1) does not allow sending an entity-body in requests. A server SHOULD read and forward a message-body on any request; if the request method does not include defined semantics for an entity-body, then the message-body SHOULD be ignored when handling the request.

9.7节:

The DELETE method requests that the origin server delete the resource identified by the Request-URI. This method MAY be overridden by human intervention (or other means) on the origin server. The client cannot be guaranteed that the operation has been carried out, even if the status code returned from the origin server indicates that the action has been completed successfully. However, the server SHOULD NOT indicate success unless, at the time the response is given, it intends to delete the resource or move it to an inaccessible location. A successful response SHOULD be 200 (OK) if the response includes an entity describing the status, 202 (Accepted) if the action has not yet been enacted, or 204 (No Content) if the action has been enacted but the response does not include an entity. If the request passes through a cache and the Request-URI identifies one or more currently cached entities, those entries SHOULD be treated as stale. Responses to this method are not cacheable.c

因此,它没有显式地允许或禁止,并且代理可能会删除消息体(尽管它应该读取并转发它)。