如何禁止将字符集自动添加到okhttp中的Content-Type

问题描述

考虑以下代码:

    OkHttpClient client = new OkHttpClient();

    MediaType mediaType = MediaType.parse("text/plain; charset=utf-8"); // [A]
    RequestBody body = RequestBody.create(mediaType, media);
    String[] aclHeader = "x-goog-acl:public-read".split(":");

    Request request = new Request.Builder()
            .addHeader("Content-Type", "text/plain") // [B]
            .addHeader(aclHeader[0], aclHeader[1])
            .url(url)
            .put(body)
            .build();

    Response response = client.newCall(request).execute();

我正在使用以前签名的URL从客户端访问GCS.

I am accessing GCS from a client, with a previously signed URL.

问题:似乎okhttp也将为正文[A]声明的字符集也添加到URL中(至少对于文本/纯文本而言)，即使未在[B]中声明也是如此.这会弄乱我签名的URL，GCS会返回403 Forbidden.

Problem: It seems okhttp adds the charset declared for the body [A] to the URL as well (at least for text/plain), even though it is not declared in [B]. This messes up my signed URL and GCS returns 403 Forbidden.

• 如果我从[A]中删除了字符集，它仍会添加.
• 如果我在对字符集进行签名之前将其添加到已签名的URL中，则该字符集将起作用并且GCS会返回200 OK.

但这不是应该的.至少在使用签名的URL时，这些URL必须完全按照声明的方式发送到服务器.

But this is not as it should be. At least when working with signed URLs, these must be sent to the server exactly as declared.

我尝试使用Apache http客户端(我不想在生产中使用它，因为okhttpclient已经是我的安装的一部分)，并且该客户端没有暴露此行为:

I tried using the Apache http client (which I don't want to use in production as okhttpclient is already part of my installation) and that client does not expose this behavior:

        String[] aclHeader = "x-goog-acl:public-read".split(":");

        StatusLine statusLine = Request

                .Put(url)
                .addHeader("Content-Type", "text/plain")
                .addHeader(aclHeader[0], aclHeader[1])
                .bodyByteArray(media)

                .execute().returnResponse().getStatusLine();

是否有一种方法可以抑制okhttp中的行为，即将其添加到Content-Type或在体内冗余地传输Content-Type?

Is there a way to suppress the behavior in okhttp, that it adds to the Content-Type or transfers the Content-Type within the body redundantly?

推荐答案

我找到了解决方法:

以下是罪魁祸首:

RequestBody body = RequestBody.create(mediaType, media);

create具有3个媒体签名:

create has 3 signatures for media:

• 字符串
• byte []
• 文件

当我传递一个String时，它会忽略提供的mediaType并将字符集添加到其中.即使对于图片/jpeg，它也会发送

When I pass a String, it disregards the supplied mediaType and adds the charset to it. Even for image/jpeg it would send

image/jpeg; charset = utf-8

image/jpeg; charset=utf-8

到服务器.

使用byte []或File抑制该行为.

Using byte[] or File suppresses that behavior.

希望对您有帮助！

[愚蠢的我-为简单起见，我在测试过程中给了它一个String，因为我不在乎身体；-(]

[Stupid me - for simplicity I gave it a String during testing, as I didn't care about the body ;-( ]

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