2013-04-10 95 views
1

我有一個服務器期望Content-Length作爲POST標題的一部分。對於POSTing,我使用的是Apache HttpComponents庫。如何將Content-Length頭添加到Apache HttpComponents中的HttpPost?

這是預期的請求的一個精簡版(具有所有所需要頭ofcourse):

POST /ParlayREST/1.0/sample/ HTTP/1.1 
Content-Type: application/json 
Accept: application/json 
Host: server.url.com:8080 
Content-Length: 287 
{ 
    "listenerURL":"http://application.example.com/notifyURL"}, 
    "sessionId":"12345" 
} 

我已經使用的HttpPostsetEntity方法來設置StringEntity(換算json - > String - > StringEntity)作爲POST的內容。但是當我執行這個請求時,我最終得到一個POST請求,它在它的頭部中沒有指定內容長度

無論如何添加這個缺失的標題?

(我想的setHeader()設置的Content-Length這引發了錯誤說,內容長度已經存在)

這是我使用來創建POST請求的代碼:

//Convert the registration request object to json 
StringEntity registrationRequest_json_entity = new StringEntity(gsonHandle.toJson(registrationRequest)); 
registrationRequest_json_entity.setContentType("application/json"); 

//Creating the HttpPost object which contains the endpoint URI 
HttpPost httpPost = new HttpPost(Constants.CLIENT_REGISTRATION_URL); 
httpPost.setHeader(HTTP.CONTENT_TYPE,"application/json"); 
httpPost.setHeader("Accept","application/json"); 
httpPost.setHeader(HTTP.TARGET_HOST,Constants.REGISTRATION_HOST + ":" + Constants.REGISTRATION_PORT); 

//Set the content as enitity within the HttpPost object  
httpPost.setEntity(registrationRequest_json_entity); 

HttpResponse response = httpClient.execute(httpPost, new BasicHttpContext()); 
HttpEntity entity = response.getEntity(); 
if (entity != null) { 
    //work on the response 
} 
EntityUtils.consume(entity); 
+0

您可以添加用於創建請求的代碼嗎? – vptheron 2013-04-10 13:18:51

+0

當然..將更新與我的代碼帖子 – user2265993 2013-04-11 06:51:25

+0

你如何確定'Content-Length'頭沒有被髮送? – Perception 2013-04-19 05:03:04

回答

0

嘗試:

httppost.setHeader(HTTP.CONTENT_LEN,"0"); 

這將設置共同潛在長度爲0.

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