如何改变HttpRequest的内容类型?

Question

下面是我的代码:

public static void main(String[] args) throws Exception {
HttpClient client = HttpClient.newHttpClient();
File file = new File("/home/xxxxxxxxx/Téléchargements/XxxXx");
File[] files = file.listFiles();
for (File f : files) {
HttpRequest request = HttpRequest.newBuilder().uri(URI.create("https://exemple.demo.monapi.com/api/v5/submissions"))
.POST(BodyPublishers.ofFile(FileSystems.getDefault().getPath(f.getAbsolutePath())))
.header("Authorization", "Token c0198efc82c36812a6a32af0579a8332aa37f7a7")
.build();

HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
System.out.println(response);
}
}

问题是，我得到一个415响应，因为，默认的内容类型是应用程序/pdf和支持的内容类型为我的api编码的POST请求的主体是:

• multipart/form-data(通常用于上传文件)
• application/x-www-form-urlencode(所有剩余情况)

如何更改内容类型?

Answer 1

可以通过添加多个.header("key", "value")来添加多个标头。

内容类型标头与授权标头一起添加在下面的代码

HttpRequest request = HttpRequest.newBuilder().uri(URI.create("https://exemple.demo.monapi.com/api/v5/submissions"))
.POST(BodyPublishers.ofFile(FileSystems.getDefault().getPath(f.getAbsolutePath())))
.header("Authorization", "Token c0198efc82c36812a6a32af0579a8332aa37f7a7")
.header("Content-Type", "multipart/form-data")
.build();