Postman 请求 returns 201，OkHttp3 请求 returns 400

Question

我需要向 API 发送数据，我使用 OkHttp 3.9.1

OkHttpClient client = new OkHttpClient();
String path = "/api/mobileinspector";
Request.Builder builder = new Request.Builder();
URI url = URI.create(ApiManager.apiURL + path);
MultipartBody.Builder builder = new MultipartBody.Builder();
builder.addFormDataPart("MobileInspector[fio]", fio);
builder.addFormDataPart("MobileInspector[email]", email);
builder.addFormDataPart("MobileInspector[phone]", phone);
builder.addFormDataPart("MobileInspector[description]", description);
builder.addFormDataPart("MobileInspector[address]", address);
builder.addFormDataPart("MobileInspector[category]", category.toString());
MultipartBody body = builder.build();
builder.addHeader("Accept", "application/json")
    .addHeader("Content-Type", "multipart/form-data")
    .url(url.toURL())
    .post(body);
response = client.newCall(builder.build()).execute();

API returns 400，也就是说API没有识别到数据。我在 Postiman 中尝试了相同的请求并且它工作正常，按预期返回 201。

我使用 wireshark 捕获了来自 postman 和来自模拟器的 http 请求。我在这些请求中找不到任何差异：

OkHttp 提出了这个请求：

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m'<8POST /api/mobileinspector HTTP/1.1 Accept: application/json Content-Type: multipart/mixed; boundary=28ede98e-87b6-4701-b587-57bbcdccb802 Content-Length: 842 Host: API_CORRECT_IP Connection: Keep-Alive Accept-Encoding: gzip User-Agent: okhttp/3.9.1

--28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[fio]" Content-Length: 3

123 --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[email]" Content-Length: 11

123@eqw.sda --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[phone]" Content-Length: 7

7232321 --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[description]" Content-Length: 5

21321 --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[address]" Content-Length: 7

2332121 --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition: form-data; name="MobileInspector[category]" Content-Length: 1

2 --28ede98e-87b6-4701-b587-57bbcdccb802--

Postman 制作了这个：

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Y'<3POST /api/mobileinspector HTTP/1.1 cache-control: no-cache Postman-Token: 8e425452-a60d-4209-8868-acf9ebc9986b User-Agent: PostmanRuntime/7.1.1 Accept: / Host: API_CORRECT_IP accept-encoding: gzip, deflate content-type: multipart/form-data; boundary=--------------------------067684848634261464344219 content-length: 841 Connection: keep-alive

----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[fio]"

test ----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[email]"

test@example.com ----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[address]"

address ----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[phone]"

12312312 ----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[category]"

1 ----------------------------067684848634261464344219 Content-Disposition: form-data; name="MobileInspector[description]"

no description ----------------------------067684848634261464344219--

Answer 1

这两部分差异很大：

还行http:

m'<8POST /api/mobileinspector HTTP/1.1 Accept: application/json Content-Type: multipart/mixed; boundary=28ede98e-87b6-4701-b587-57bbcdccb802 Content-Length: 842 Host: API_CORRECT_IP Connection: Keep-Alive Accept-Encoding: gzip User-Agent: okhttp/3.9.1

邮递员：

Y'<3POST /api/mobileinspector HTTP/1.1 cache-control: no-cache Postman-Token: 8e425452-a60d-4209-8868-acf9ebc9986b User-Agent: PostmanRuntime/7.1.1 Accept: / Host: API_CORRECT_IP accept-encoding: gzip, deflate content-type: multipart/form-data; boundary=--------------------------067684848634261464344219 content-length: 841 Connection: keep-alive

Postman 将内容发送为 multipart/form-data，而 okhttp 设置为 multipart/mixed。这个问题几乎可以肯定与 API.

意外的内容类型有关

尝试像这样设置生成器：

RequestBody requestBody = new MultipartBody.Builder()
      .type(MultipartBody.FORM)
      // ...
      .build();

Postman 请求 returns 201，OkHttp3 请求 returns 400

Postman request returns 201, OkHttp3 request returns 400

api

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android

okhttp3