Eclipse Ditto -创建MQTT连接-失败，返回无效的json400响应

Question

在描述here和Operating Devops Commands之后建立到MQTT3.1.1端点的连接以无效的json400响应结束。即使是示例MQTT-Bidirectional也会被拒绝，返回一个400。因此，这就是为什么我在这里张贴这个问题，以获得提示，我目前做错了什么，以及我可以做些什么来帮助在相同问题中运行的其他人。这是我的curl请求：

    gd@gd:~/ditto/mosquitto$ curl -X POST 'http://{ditto-url}/devops/piggyback/connectivity?timeout=10000' -u devops:foobar -H 'Content-Type: application/json' -d createMQTT_connection.json
{"status":400,"error":"json.invalid","message":"Failed to parse JSON string 'createMQTT_connection.json'!","description":"Check if the JSON was valid (e.g. on https://jsonlint.com) and if it was in required format."}

检查我的json文件的提示返回我的json是有效的。

下面是我的json文件当前的样子：

{

"targetActorSelection": "/system/sharding/connection",
"headers": {
"aggregate": false
},
"piggybackCommand": {
    "type": "connectivity.commands:createConnection",
    "connection": {
          "id": "mqtt-example-connection-123",
          "name": "mmqtt-example-connection-123",
          "connectionType": "mqtt",
          "connectionStatus": "open",
          "failoverEnabled": true,
          "uri": "tcp://{mqtt-broker-url}:1883",
          "sources": [
            {
              "addresses": [
            "{ditto-url}/#"
              ],
              "authorizationContext": ["nginx:ditto"],
              "qos": 0,
              "filters": []
            }
          ],
          "targets": [
            {
              "address": "{ditto-url}/{{ thing:id }}",
              "topics": [
            "_/_/things/twin/events"
              ],
              "authorizationContext": ["nginx:ditto"],
              "qos": 0
            }
          ]
        }
     }
}

有人知道为什么这个json无效了吗？

感谢您对解决此问题的支持和提示！

编辑首先，"-f“对于curl请求更有意义：

curl -X POST -u devops:foobar 'http://{ditto-url}:8080/devops/piggyback/connectivity?timeout=10000' -f createMQTT_connection_1.json
curl: (22) The requested URL returned error: 400 Bad Request
curl: (6) Could not resolve host: createMQTT_connection_1.json

其次是更新json (结果如上图所示)

{
    "targetActorSelection": "/system/sharding/connection",
    "headers": {
        "aggregate": false
    },
    "piggybackCommand": {
        "type": "connectivity.commands:createConnection",
        "connection": {
            "id": "mqtt-example-connection-123",
            "connectionType": "mqtt",
            "connectionStatus": "open",
            "failoverEnabled": true,
            "uri": "tcp://{MQTT-Broker-url}:1883",
            "sources": [{
                "addresses": ["ditto-tutorial/#"],
                "authorizationContext": ["nginx:ditto"],
                "qos": 0,
                "filters": []
            }],
            "targets": [{
                "address": "ditto-tutorial/{{ thing:id }}",
                "topics": [
                "_/_/things/twin/events",
                "_/_/things/live/messages"
                ],
                "authorizationContext": ["nginx:ditto"],
                "qos": 0
            }]
        }
    }
}

Answer 1

我认为你面临的问题与卷曲有关。请在这里查看如何从文件发送json数据：https://stackoverflow.com/a/18614411/5058051

在指定文件位置时，您的情况下似乎缺少@。