Java调用Microsoft Graph API创建OneDrive上传会话报错，求MP4上传指南

错误原因与修复 #

你遇到的Specified HTTP method is not allowed for the request target错误，核心原因是创建上传会话的HTTP方法错误。根据Microsoft Graph API规范，创建上传会话必须使用POST方法，而非你代码中的PUT。

修正后的createUploadSession方法：

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public String createUploadSession(String userId, String fileName) throws Exception {
    String url = "https://graph.microsoft.com/v1.0/users/" + userId + "/drive/root:/" + fileName + ":/createUploadSession";
    HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
    connection.setRequestMethod("POST"); // 修正为POST方法
    connection.setRequestProperty("Authorization", "Bearer " + accessToken);
    connection.setRequestProperty("Content-Type", "application/json");
    connection.setDoOutput(true);

    // 指定文件冲突时的处理行为
    String jsonPayload = "{\"item\": {\"@microsoft.graph.conflictBehavior\": \"rename\"}}";
    try (OutputStream os = connection.getOutputStream()) {
        os.write(jsonPayload.getBytes(StandardCharsets.UTF_8));
    }

    // 处理响应
    if (connection.getResponseCode() >= 200 && connection.getResponseCode() < 300) {
        String response = new String(connection.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
        ObjectMapper objectMapper = new ObjectMapper();
        JsonNode jsonNode = objectMapper.readTree(response);
        return jsonNode.get("uploadUrl").asText();
    } else {
        String error = new String(connection.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);
        throw new RuntimeException("创建上传会话失败: " + error);
    }
}

OneDrive上传MP4文件完整指南 #

1. 前置准备

• 权限配置：确保应用已申请以下权限之一（根据业务场景选择）：
  • Files.ReadWrite：用户授权后访问自身OneDrive文件
  • Files.ReadWrite.All：访问所有用户的OneDrive文件（需管理员同意）
• 获取AccessToken：通过Microsoft Identity Platform的OAuth2授权流程，获取包含上述权限的AccessToken。

2. 创建上传会话

使用上述修正后的createUploadSession方法，获取分块专用的uploadUrl。该URL无需重复携带AccessToken，可用于后续所有分块上传请求。

3. 分块上传MP4文件

MP4文件通常体积较大，需采用分块上传。推荐分块大小为32MB（范围在5MB-60MB之间均可），以下是分块上传的实现代码：

import java.io.File;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public void uploadFileInChunks(String uploadUrl, File mp4File) throws Exception {
    final int CHUNK_SIZE = 32 * 1024 * 1024; // 32MB分块大小
    long fileSize = mp4File.length();
    long uploadedBytes = 0;

    try (RandomAccessFile raf = new RandomAccessFile(mp4File, "r")) {
        while (uploadedBytes < fileSize) {
            long bytesToRead = Math.min(CHUNK_SIZE, fileSize - uploadedBytes);
            byte[] chunk = new byte[(int) bytesToRead];
            raf.read(chunk);

            // 构建分块请求
            HttpURLConnection connection = (HttpURLConnection) new URL(uploadUrl).openConnection();
            connection.setRequestMethod("PUT");
            // 设置Content-Range头，格式为 bytes 起始索引-结束索引/总大小
            String contentRange = String.format("bytes %d-%d/%d", uploadedBytes, uploadedBytes + bytesToRead - 1, fileSize);
            connection.setRequestProperty("Content-Range", contentRange);
            connection.setDoOutput(true);

            // 发送分块数据
            try (OutputStream os = connection.getOutputStream()) {
                os.write(chunk);
            }

            // 处理响应
            int responseCode = connection.getResponseCode();
            if (responseCode == 200 || responseCode == 201) {
                // 全部分块上传完成，返回文件信息
                String response = new String(connection.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
                System.out.println("文件上传完成: " + response);
                break;
            } else if (responseCode == 202) {
                // 当前分块上传成功，继续下一块
                uploadedBytes += bytesToRead;
                System.out.println("已上传: " + uploadedBytes + "/" + fileSize + " bytes");
            } else {
                String error = new String(connection.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);
                throw new RuntimeException("分块上传失败: " + error);
            }
        }
    }
}

4. 完整调用示例

public static void main(String[] args) {
    try {
        String accessToken = "你的有效AccessToken";
        String userId = "tranduongtruong1623_gmail.com#EXT#@tranduongtruong1623gmail.onmicrosoft.com";
        String fileName = "uploaded_video.mp4";
        File mp4File = new File("本地MP4文件的绝对路径");

        OneDriveService service = new OneDriveService(accessToken); // 假设构造方法传入accessToken
        String uploadUrl = service.createUploadSession(userId, fileName);
        service.uploadFileInChunks(uploadUrl, mp4File);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

关键注意事项

• 分块大小不可超过60MB，否则API会返回错误。
• 若上传中断，可直接复用uploadUrl继续上传未完成的分块，无需重新创建会话。
• Content-Range的索引从0开始，需确保起始、结束索引与已上传字节数严格对应。

内容的提问来源于stack exchange，提问作者Dia