Question

我需要向API发送数据，我使用的是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返回400，这意味着API无法识别数据。我在Postiman尝试了相同的请求，并且工作正常，按预期返回201.

我使用wireshark从邮递员和模拟器中捕获了http请求。我无法在这些请求中发现任何差异：

OkHttp提出了这个要求：

8G ^ |电子@@`} P〜R·]＆＃39; Z @

m＆＃39;＆lt; 8POST / api / mobileinspector HTTP / 1.1接受：application / json   内容类型：multipart / mixed;   boundary = 28ede98e-87b6-4701-b587-57bbcdccb802内容长度：842   主机：API_CORRECT_IP连接：保持活动接受编码：gzip   用户代理：okhttp / 3.9.1

- 28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;名称=＆＃34; MobileInspector [FIO]＆＃34;内容长度：3

123   --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;命名=＆＃34; MobileInspector [电子邮件]＆＃34;内容长度：11

123@eqw.sda   --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;命名=＆＃34; MobileInspector [电话]＆＃34;内容长度：7

7232321   --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;命名=＆＃34; MobileInspector [描述]＆＃34;内容长度：5

21321   --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;命名=＆＃34; MobileInspector [地址]＆＃34;内容长度：7

2332121   --28ede98e-87b6-4701-b587-57bbcdccb802 Content-Disposition：form-data;命名=＆＃34; MobileInspector [类别]＆＃34;内容长度：1

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

邮差是这样做的：

8G ^ |电子@@`} PA8 @

Y＆＃39;＆lt; 3POST / api / mobileinspector HTTP / 1.1缓存控制：无缓存   Postman-Token：8e425452-a60d-4209-8868-acf9ebc9986b User-Agent：   PostmanRuntime / 7.1.1接受： / 主机：API_CORRECT_IP接受编码：   gzip，deflate content-type：multipart / form-data;   边界= -------------------------- 067684848634261464344219   content-length：841连接：keep-alive

---------------------------- 067684848634261464344219 Content-Disposition：form-data;名称=＆＃34; MobileInspector [FIO]＆＃34;

测试   ---------------------------- 067684848634261464344219 Content-Disposition：form-data;命名=＆＃34; MobileInspector [电子邮件]＆＃34;

test@example.com   ---------------------------- 067684848634261464344219 Content-Disposition：form-data;命名=＆＃34; MobileInspector [地址]＆＃34;

地址   ---------------------------- 067684848634261464344219 Content-Disposition：form-data;名称=＆＃34; MobileInspector [电话]＆＃34;

12312312   ---------------------------- 067684848634261464344219 Content-Disposition：form-data;命名=＆＃34; MobileInspector [类别]＆＃34;

1   ---------------------------- 067684848634261464344219 Content-Disposition：form-data;名称=＆＃34; MobileInspector [描述]＆＃34;

没有描述   ---------------------------- 067684848634261464344219 -

Answer 1

这两部分差别很大：

okhttp：

m＆＃39;＆lt; 8POST / api / mobileinspector HTTP / 1.1接受：application / json Content-Type：multipart / mixed; boundary = 28ede98e-87b6-4701-b587-57bbcdccb802 Content-Length：842主机：API_CORRECT_IP连接：Keep-Alive Accept-Encoding：gzip User-Agent：okhttp / 3.9.1

邮差：

Y＆＃39;＆lt; 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

邮差发送内容为multipart/form-data，而okhttp设置multipart/mixed。这个问题几乎肯定与API意外的内容类型有关。

尝试将构建器设置为：

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

邮递员请求返回201，OkHttp3请求返回400

1 个答案: