Java 使用Apache HTTP客户端创建多部分/表单数据实体_Java_Apache Httpclient 4.x_Multipartform Data_Contextio

Java 使用Apache HTTP客户端创建多部分/表单数据实体

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Java 使用Apache HTTP客户端创建多部分/表单数据实体,java,apache-httpclient-4.x,multipartform-data,contextio,Java,Apache Httpclient 4.x,Multipartform Data,Contextio,我正在尝试为POST请求创建一个HTTP实体，该实体看起来像下面列出的contextIO API的一部分：从他们的文档中，他们给出了以下示例： POST /2.0/accounts/4f01234567890abcdef09876/messages/ HTTP/1.1 Host: api.context.io Accept: */* Authorization: OAuth oauth_consumer_key="abcdef1234",oauth_version="1.0",oauth_t

我正在尝试为POST请求创建一个HTTP实体，该实体看起来像下面列出的contextIO API的一部分：

从他们的文档中，他们给出了以下示例：

POST /2.0/accounts/4f01234567890abcdef09876/messages/ HTTP/1.1
Host: api.context.io
Accept: */*
Authorization: OAuth oauth_consumer_key="abcdef1234",oauth_version="1.0",oauth_timestamp="1327695986",oauth_nonce="6dPrHNDrx5hzfHkn",oauth_signature_method="HMAC-SHA1",oauth_signature="MFOyvf5Ykcsn7une48kGW0Aharw%3D"
Content-Type: multipart/form-data; boundary=------someRandomBoundary
Content-Length: 1917

--------someRandomBoundary
Content-Disposition: form-data; name="dst_folder"

testFolder
--------someRandomBoundary
Content-Disposition: form-data; name="message"; filename="message.eml"
Content-Type: message/rfc822

Delivered-To: jim@bob.com
Received: by 101.42.118.54 with SMTP id hp10cs194007icb;
        Thu, 13 Jan 2012 15:02:20 -0700 (PDT)
Return-Path: <blahblahblah@someisp.com>
Received: from [192.168.1.5] (71-211-196-225.hlrn.bob.com. [71.211.196.225])
        by mx.bob.com with ESMTPS id u41si888834ybu.20.2011.10.13.14.54.54
        (version=TLSv1/SSLv3 cipher=OTHER);
        Thu, 13 Jan 2012 15:02:20 -0700 (PDT)
Received: from mail-gx0-f174.someisp.com (mail-gx0-f174.someisp.com [109.45.123.134])
        by mx.someisp.com with ESMTPS id u41si888834ybu.20.2011.10.13.14.54.54
        (version=TLSv1/SSLv3 cipher=OTHER);
        Thu, 13 Jan 2012 14:54:53 -0700 (PDT)
Message-ID: <2E973E2A.3150305@bob.com>
Date: Thu, 13 Jan 2012 15:54:50 -0600
From: Dave Davidson <blahblahblah@someisp.com>
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.21) Gecko/20110831 Thunderbird/3.1.13
MIME-Version: 1.0
To: Jim Bob <jim@bob.com>
Subject: Just sending out a test message
Content-Type: multipart/alternative;
 boundary="------------030009050309030308020807"

This is a multi-part message in MIME format.
--------------030009050309030308020807
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

Yo! This is a test multi-part message.


--------------030009050309030308020807
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 7bit

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
  </head>
  <body bgcolor="#ffff00" text="#ff0000">
    Yo! This is a test multi-part message.<br>
  </body>
</html>

--------------030009050309030308020807--

--------someRandomBoundary--

但我似乎无法将整个内容包装在多部分/表单数据部分中如何使用Apache HTTP客户端创建此请求，有什么想法吗？

请尝试在以下内容之后添加此内容：

HttpPost httpPost = new HttpPost("http://api.context.io//2.0/accounts/4f01234567890abcdef09876/messages/");
httpPost.setEntity(entity);
HttpClient httpClient = new DefaultHttpClient();  
HttpResponse response = httpClient.execute(httpPost);

我还看到他们使用OAuth和讨厌的类型（1.0）。计算OAuth 1.0签名非常繁琐。您会发现使用OAuth库发出请求要容易得多。

由@Chloe提供的答案不会将boundary=参数添加到内容类型标题中

您可以强制HTTP客户端将该参数添加到内容类型头中，但这需要一些技巧。这详细描述了该过程-

您是否正在尝试将您创建的多部分嵌套到另一个多部分中？@Chloe提供的答案似乎符合你的要求。

HttpPost httpPost = new HttpPost("http://api.context.io//2.0/accounts/4f01234567890abcdef09876/messages/");
httpPost.setEntity(entity);
HttpClient httpClient = new DefaultHttpClient();  
HttpResponse response = httpClient.execute(httpPost);