java请求文件上传接口

public static void main(String[] args) throws IOException {

    String s="./saas/users/123456/2022-07/7838ab88ca6544a405b26568fdd23239.png";
    String substring = s.substring(6, s.length());
    System.err.println(substring);
    OkHttpClient okHttpClient = new OkHttpClient.Builder()
            //设置连接超时时间
            .connectTimeout(100, TimeUnit.SECONDS)
            //设置读取超时时间
            .readTimeout(100, TimeUnit.SECONDS)
            .build();
    // file是要上传的文件 File()
    File file2 = new File( System.getProperty("user.dir") + "/files"+"/Users/apple/Downloads" + "/人脸.jpg");
    RequestBody fileBody = RequestBody.create(MediaType.parse("multipart/form-data"), file2);
    // 不仅可以支持传文件，还可以在传文件的同时，传参数
    MultipartBody requestBody = new MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("file", "人脸.jpg", fileBody)
            .build();
    Request request = new Request.Builder().url("http://101.200.139.97/face/service/getId").post(requestBody).build();
    Response response = okHttpClient.newCall(request).execute();
    System.err.println(response.body());
    if (!response.isSuccessful()) {
        System.err.println("请求失败");
        // 一般会在这抛个异常
    }
    String result = Objects.requireNonNull(response.body()).string();
    System.err.println(result);
    Objects.requireNonNull(response.body()).close();
}