java POST 请求的内容类型标头
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Content Type header for POST request
提问by AndyAndroid
I have in Java (similar in other languages, problem should be language independent) a POST request I am sending to the server. The POST request contains only some POST parameters no body.
我在 Java 中（在其他语言中类似，问题应该与语言无关）我发送到服务器的 POST 请求。POST 请求只包含一些没有正文的 POST 参数。
I basically have this:
我基本上有这个：
postData = URLEncoder.encode("user", "UTF-8") + "=" + URLEncoder.encode("Hymanychan", "UTF-8");
//HttpSessionToken.setRequestProperty("Content-Type", "application/xml");
OutputStream postContent = (OutputStream)HttpSessionToken.getOutputStream();
postContent.write(postData.getBytes("UTF-8"));
This works fine. The question is around the second line, a comment at the moment. Uncommenting this line ruins my code, okay my data is not XML so I can understand this. To some REST services you have to POST a whole XML document, but no POST parameters, something like this
这工作正常。问题围绕着第二行，即此刻的评论。取消注释这一行会破坏我的代码，好吧，我的数据不是 XML，所以我可以理解这一点。对于某些 REST 服务，您必须 POST 整个 XML 文档，但没有 POST 参数，例如
postData = "<xml> whatever xml structure here </xml>"
HttpSessionToken.setRequestProperty("Content-Type", "application/xml");
OutputStream postContent = (OutputStream)HttpSessionToken.getOutputStream();
postContent.write(postData.getBytes("UTF-8"));
This works too. The difference is the postData is now an XML and the content type is set.
这也有效。不同之处在于 postData 现在是一个 XML 并且设置了内容类型。
The question now is, what if a Service requires BOTH, POST parameters as in example 1 AND an xml body as in example 2. How would I do this? If that never happens, why doesn't it happen?
现在的问题是，如果服务需要示例 1 中的 POST 参数和示例 2 中的 xml 正文，该怎么办。我该怎么做？如果那永远不会发生，为什么不发生？
Thanks, A.
谢谢。
采纳答案by Jon Lin
You could do that as multipart/form-data so you can have mixed content in a single POST body. It's similar to multipart-mime, and each part can have its own content-type. Here's a previous stackoverflow answer for multipart form-data in Java: How can I make a multipart/form-data POST request using Java?
您可以将其作为 multipart/form-data 来执行，这样您就可以在单个 POST 正文中包含混合内容。它类似于 multipart-mime，每个部分都可以有自己的内容类型。这是 Java 中多部分表单数据的先前 stackoverflow 答案：如何使用 Java 发出多部分/表单数据 POST 请求？
