如何在Java中发送具有不同内容类型的mime多部分宁静请求

Question

I have a bunch of requests of type xml and/or base64 encoded image that I want to send it to client's server, they have their REST API. There is also a need to combine multiple requests into one to efficiently utilize the bandwidth. So I was thinking of using mime-multipart request. What library I can use in java to accomplish this. I know how to send a regular httpRequest in java but I dont know how to send a multipart mime request? ie how will I specify different content type for each of the body? Would appreciate any pointers.

I want to send something like this

Content-type: multipart/form-data;boundary=main_boundary

--main_boundary
Content-type: text/xml
<?xml version='1.0'?>
<content>
Some content goes here
</content>

--main_boundary
Content-type: multipart/mixed;boundary=sub_boundary

--main_boundary
Content-type: text/plain; charset=utf-8

 {base64 encoded string that represents image}

--main_boundary--

Feel free to correct me if I am wrong in my understanding. This is the first time I am using mime.

Answer 1

The Apache HttpClient library can help you construct multipart requests for file uploads.

Have a look here . And here is a sample application .