时间戳

首页 > 解决方案 > 为 cosmos DB 构建散列令牌签名

azure - 为 cosmos DB 构建散列令牌签名

问题描述

我正在尝试创建散列令牌以在 cosmos db 中创建文档，但我总是得到 405 方法不允许，有人可以验证我提供的以下格式是否正确吗？

url = https://cosmos-test-cache.documents.azure.com/dbs/FamilyDB/colls/FamilyCollection/docs/123456
ResourceLink = /dbs/FamilyDB/colls/FamilyCollection/docs/123456
ResourceType = docs
HTTP verb = POST

Response

{
  "code": "MethodNotAllowed",
  "message": "RequestHandler.Post"
}

标签： azureazure-cosmosdb

解决方案

如果你观察官方cosmos db rest api，你会发现创建文档的 url 示例是https://{databaseaccount}.documents.azure.com/dbs/{db-id}/colls/{coll-id}/docs

在此处输入图像描述

但是，您的网址是

https://cosmos-test-cache.documents.azure.com/dbs/FamilyDB/colls/FamilyCollection/docs/123456这是获取文档，而不是创建文档。因此，它被标识为Get请求而不是POST请求。

然后405 "MethodNotAllowed"发生错误。

更新：

让我修复它。

如果你使用sdk，你可以设置disableAutomaticIdGeneration属性来避免设置id。它会自动为你生成id。

喜欢：

在此处输入图像描述

但是根据其余的api文档，id属性是必需的。ID 字段会在创建文档时自动添加而无需指定 ID 值。

在此处输入图像描述

请参考示例 java rest 代码：

import com.sun.org.apache.xml.internal.security.utils.Base64;
import org.json.JSONObject;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

public class CreateDocumentRest {

    private static final String account = "***";
    private static final String key = "***";


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

        String urlString = "https://" + account + ".documents.azure.com/dbs/db/colls/coll/docs";

        //prepare for the json body
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("name", "A");
        jsonObject.put("id", "123");

        String jsonStr = jsonObject.toString();
        String encoding = "UTF-8";
        System.out.println(jsonStr);
        byte[] data = jsonStr.getBytes(encoding);

        HttpURLConnection conn = (HttpURLConnection) (new URL(urlString)).openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        getFileRequest(conn, data);
        OutputStream outStream = conn.getOutputStream();

        outStream.write(data);
        outStream.flush();
        outStream.close();
        System.out.println(conn.getResponseCode());
        System.out.println(conn.getResponseMessage());


        BufferedReader br = null;
        if (conn.getResponseCode() != 200) {
            br = new BufferedReader(new InputStreamReader((conn.getErrorStream())));
        } else {
            br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
        }
        System.out.println("Response body : " + br.readLine());
    }

    public static void getFileRequest(HttpURLConnection request, byte[] data)
            throws Exception {
        SimpleDateFormat fmt = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss");
        fmt.setTimeZone(TimeZone.getTimeZone("GMT"));
        String date = fmt.format(Calendar.getInstance().getTime()) + " GMT";
        String stringToSign = "POST".toLowerCase() + "\n"
                + "docs".toLowerCase() + "\n"
                + "dbs/db/colls/coll" + "\n"
                + date.toLowerCase() + "\n"
                + "" + "\n";
        System.out.println("stringToSign : " + stringToSign);
        String auth = getAuthenticationString(stringToSign);

        request.setRequestMethod("POST");
        request.setRequestProperty("x-ms-date", date);
        request.setRequestProperty("x-ms-version", "2017-02-22");
        request.setRequestProperty("Authorization", auth);
        request.setRequestProperty("Content-Length", String.valueOf(data.length));
        request.setRequestProperty("Content-Type", "application/json");

    }

    private static String getAuthenticationString(String stringToSign) throws Exception {
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(new SecretKeySpec(Base64.decode(key), "HmacSHA256"));
        String authKey = Base64.encode(mac.doFinal(stringToSign.getBytes("UTF-8")));
        System.out.println("authkey:" + authKey);
        String auth = "type=master&ver=1.0&sig=" + authKey;
        auth = URLEncoder.encode(auth);
        System.out.println("authString:" + auth);
        return auth;
    }

}

根据我的观察，请调整您的ResourceLinkasdbs/FamilyDB/colls/FamilyCollection和urlashttps://cosmos-test-cache.documents.azure.com/dbs/FamilyDB/colls/FamilyCollection/docs

推荐阅读