HTTP上传数据的方式和OKHttp的实现

1.form-data

即http请求中的multipart/form-data,它会将表单的数据处理为一条消息，以标签为单元，用分隔符分开。既可以上传键值对，也可以上传文件。当上传的字段是文件时，会有Content-Type来说明文件类型；content-disposition，用来说明字段的一些信息；由于有boundary隔离，所以multipart/form-data既可以上传文件，也可以上传键值对，它采用了键值对的方式，所以可以上传多个文件。

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("text/plain");
RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM)
  .addFormDataPart("name", "Tome")
  .addFormDataPart("from", "China")
  .addFormDataPart("hobby", "football")
  .addFormDataPart("image", "logo-square.png", RequestBody.create(MEDIA_TYPE_PNG, new File("website/static/logo-square.png")))
  .build();
Request request = new Request.Builder()
  .url("http://192.168.10.66/api/upload?name=242910b319c841bc804c53ef72d39990.jpg&ids=6143&type=2")
  .method("POST", body)
  .addHeader("x-sessionkey", "59534B58-2BC8-49BF-8B0E-2E3872C9F1DB")
  .addHeader("x-userid", "752332")
  .addHeader("User-Agent", "android")
  .addHeader("x-tonce", "1592286822038")
  .addHeader("x-timestamp", "1592286822038")
  .build();
Response response = client.newCall(request).execute();

  

 

  
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2.x-www-form-urlencoded

即application/x-www-from-urlencoded,会将表单内的数据转换为键值对，比如name=Tom&from=China&hobby=football。

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "name=Tom&from=China&hobby=football");
Request request = new Request.Builder()
  .url("http://192.168.10.66/api/upload?name=242910b319c841bc804c53ef72d39990.jpg&ids=6143&type=2")
  .method("POST", body)
  .addHeader("x-sessionkey", "59534B58-2BC8-49BF-8B0E-2E3872C9F1DB")
  .addHeader("x-userid", "752332")
  .addHeader("User-Agent", "android")
  .addHeader("x-tonce", "1592286822038")
  .addHeader("x-timestamp", "1592286822038")
  .addHeader("Content-Type", "application/x-www-form-urlencoded")
  .build();
Response response = client.newCall(request).execute();

  

 

  
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multipart/form-data与x-www-form-urlencoded区别：

• multipart/form-data：既可以上传文件等二进制数据，也可以上传表单键值对，只是最后会转化为一条信息；
• x-www-form-urlencoded：只能上传键值对，并且键值对都是间隔分开的。

3.raw

可以上传任意格式的文本，可以上传text、json、xml、html等。

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("text/plain");
RequestBody body = RequestBody.create(mediaType, "Hello world");
Request request = new Request.Builder()
  .url("http://192.168.10.66/api/upload?name=242910b319c841bc804c53ef72d39990.jpg&ids=6143&type=2")
  .method("POST", body)
  .addHeader("x-sessionkey", "59534B58-2BC8-49BF-8B0E-2E3872C9F1DB")
  .addHeader("x-userid", "88752332")
  .addHeader("User-Agent", "android")
  .addHeader("x-tonce", "1592286822038")
  .addHeader("x-timestamp", "1592286822038")
  .addHeader("Content-Type", "text/plain")
  .build();
Response response = client.newCall(request).execute();

  

 

  
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4.Binary

相当于Content-Type:application/octet-stream，只可以上传二进制数据，通常用来上传文件，由于没有键值。所以，一次只能上传一个文件。这个HTTP报文的body都是文件的信息，除此之外没有额外多余的信息。如下面是传一张jpg图片：

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("image/jpeg");
RequestBody body = RequestBody.create(mediaType, "<file contents here>");
Request request = new Request.Builder()
  .url("http://192.168.10.66/api/upload?name=242910b319c841bc804c53ef72d39990.jpg&ids=6143&type=2")
  .method("POST", body)
  .addHeader("x-sessionkey", "59534B58-2BC8-49BF-8B0E-2E3872C9F1DB")
  .addHeader("x-userid", "88752332")
  .addHeader("User-Agent", "android")
  .addHeader("x-tonce", "1592286822038")
  .addHeader("x-timestamp", "1592286822038")
  .addHeader("Content-Type", "image/jpeg")
  .build();
Response response = client.newCall(request).execute();

  

 

  
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文章来源: blog.csdn.net，作者：WongKyunban，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/weixin_40763897/article/details/106806721