泽西岛客户端（2.4）-PUT InputStream但内容长度= 0
[英]Jersey Client (2.4) - PUT InputStream but Content-Length = 0
问题描述
I'm trying to make a request to a Jersey REST service which accepts an InputStream as an entity using the PUT method. 
我正在尝试向Jersey REST service发出请求，该Jersey REST service使用PUT方法将InputStream作为实体接受。
When I do, the Jersey client sets the Content-Length header to 0. 当我这样做时，Jersey客户端将Content-Length标头设置为0。
The REST service requires that the Content-Length is set to the actual size of the stream (IE the size of the file), but, whenever I try to set the Content-Length the client throws: REST服务要求将Content-Length设置为流的实际大小（即文件的大小），但是，每当我尝试设置Content-Length ，客户端都会抛出：
org.apache.http.ProtocolException: Content-Length header already present
To note - the exception is not thrown when I add the Content-Length header, (at that point, this header doesn't exist), it's thrown (I assume) when Jersey / Apache HTTPClient tries to add the 0 header value later. 注意-添加Content-Length标头时不会引发异常（此时该标头不存在），当Jersey / Apache HTTPClient尝试添加0标头值时，将引发（我假设）此异常。
Stack if it's any help: 堆叠是否有帮助：
Caused by: org.apache.http.client.ClientProtocolException at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:909) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:827) at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:326) ... 40 more
Caused by: org.apache.http.ProtocolException: Content-Length header already present at org.apache.http.protocol.RequestContent.process(RequestContent.java:96) at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:109) at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:176) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:518) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) ... 42 more
So, any ideas why Jersey / Apache HTTP Client sets the Content-Length header to 0, and, why I'm not able to override the Content-Length header 因此，所有关于为何Jersey / Apache HTTP Client将Content-Length标头设置为0，以及为什么我无法覆盖Content-Length标头的想法
I'm using: 我正在使用：
Jersey 2.4.1 with the ApacheConnector 带有ApacheConnector Jersey 2.4.1
Thanks in advance 提前致谢
Will 将
1 个解决方案
解决方案1
-1 已采纳 2014-01-30 11:50:48
Just to answer this: 只是为了回答这个问题：
This is a problem with the ApacheConnector, which will always return -1 for the size of the content, ensuring this value is never set. 这是ApacheConnector的问题，它将始终为内容的大小返回-1，以确保从未设置此值。 (This is hardcoded in the getHttpEntity method) （这在getHttpEntity方法中进行了硬编码）
Therefore, if the content-length header is required, one either has to reimplement the ApacheConnector as described here or use a different connector. 因此，如果需要的Content-Length头，一个或者具有重新实现ApacheConnector如所描述的此处或使用不同的连接器。
I have reported this on the Jersey jira. 我已经在泽西岛吉拉报道了这一点。
https://java.net/jira/browse/JERSEY-2373 https://java.net/jira/browse/JERSEY-2373
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