Question

我正在查询以JSON格式返回数据的全屋电源监控器（Neurio）。

当我在Chrome浏览器中输入网址http://192.168.1.87/current-sample时，我会获得格式正确的JSON数据，如下所示：

{"sensorId":"0x0000C47F51019B7D","timestamp":"2016-12-24T14:56:08Z","channels":[{"type":"PHASE_A_CONSUMPTION","ch":1,"eImp_Ws":55552784178,"eExp_Ws":23,"p_W":3188,"q_VAR":321,"v_V":121.753},{"type":"PHASE_B_CONSUMPTION","ch":2,"eImp_Ws":62493402411,"eExp_Ws":23,"p_W":3499,"q_VAR":263,"v_V":120.334},{"type":"CONSUMPTION","ch":3,"eImp_Ws":118046186640,"eExp_Ws":41,"p_W":6687,"q_VAR":584,"v_V":121.044}],"cts":[{"ct":1,"p_W":3188,"q_VAR":321,"v_V":121.753},{"ct":2,"p_W":3499,"q_VAR":263,"v_V":120.334},{"ct":3,"p_W":0,"q_VAR":0,"v_V":0.000},{"ct":4,"p_W":0,"q_VAR":0,"v_V":121.747}]}

在JSONLint中正确解析。

当我尝试使用以下代码行在Python中提取相同的数据时：

pvdata = requests.get('http://'+neurioip+'/current-sample').json()

返回的数据包含无效字符，如下例所示。（通过简单打印pvdata检索数据）

{u'channels': [{u'eExp_Ws': 23, u'v_V': 122.434, u'ch': 1, u'eImp_Ws': 55554346060, u'q_VAR': 305, u'p_W': 1489, u'type': u'PHASE_A_CONSUMPTION'}, {u'eExp_Ws': 23, u'v_V': 120.981, u'ch': 2, u'eImp_Ws': 62495160471, u'q_VAR': 237, u'p_W': 1872, u'type': u'PHASE_B_CONSUMPTION'}, {u'eExp_Ws': 41, u'v_V': 121.708, u'ch': 3, u'eImp_Ws': 118049506582, u'q_VAR': 542, u'p_W': 3360, u'type': u'CONSUMPTION'}], u'sensorId': u'0x0000C47F51019B7D', u'cts': [{u'p_W': 1489, u'q_VAR': 305, u'v_V': 122.434, u'ct': 1}, {u'p_W': 1872, u'q_VAR': 237, u'v_V': 120.981, u'ct': 2}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 0.0, u'ct': 3}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 122.432, u'ct': 4}], u'timestamp': u'2016-12-24T15:03:42Z'}

使用以下代码检索数据：

for keys,values in pvdata.items(): print(keys) print(values)

channels [{u'eExp_Ws': 23, u'v_V': 122.843, u'ch': 1, u'eImp_Ws': 55555370977, u'q_VAR': 14, u'p_W': 230, u'type': u'PHASE_A_CONSUMPTION'}, {u'eExp_Ws': 23, u'v_V': 121.088, u'ch': 2, u'eImp_Ws': 62496733790, u'q_VAR': -3, u'p_W': 661, u'type': u'PHASE_B_CONSUMPTION'}, {u'eExp_Ws': 41, u'v_V': 121.965, u'ch': 3, u'eImp_Ws': 118052104817, u'q_VAR': 12, u'p_W': 890, u'type': u'CONSUMPTION'}] sensorId 0x0000C47F51019B7D cts [{u'p_W': 230, u'q_VAR': 14, u'v_V': 122.843, u'ct': 1}, {u'p_W': 661, u'q_VAR': -3, u'v_V': 121.088, u'ct': 2}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 0.0, u'ct': 3}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 122.84, u'ct': 4}] timestamp 2016-12-24T15:25:16Z

＆＃34; u＆＃34;字符使得这在JSONlint或我的程序中的后续代码行中不可解析。

我已经在Python环境中查看了默认字符编码，但这似乎并没有带来任何影响。我正在寻找其他想法来调查。

Answer 1

.json()解析JSON。它已经完成了。你有一个python字典，你现在可以正常使用（正如你已经通过迭代看到的那样）。

Answer 2

它是不可解析的，因为dict的字符串表示不是JSON;如果你需要的话，你需要将dict重新归结为JSON：

In [36]: d = {u'channels': [{u'eExp_Ws': 23, u'v_V': 122.434, u'ch': 1, u'eImp_Ws': 55554346060, u'q_VAR': 305, u'p_W': 1489, u'type': u'PHASE_A_CONSUMPTION'}, {u'eExp_Ws': 23, u'v_V': 120.981, u'ch': 2, u'eImp_Ws': 62495160471, u'q_VAR': 237, u'p_W': 1872, u'type': u'PHASE_B_CONSUMPTION'}, {u'eExp_Ws': 41, u'v_V': 121.708, u'ch': 3, u'eImp_Ws': 118049506582, u'q_VAR': 542, u'p_W': 3360, u'type': u'CONSUMPTION'}], u'sensorId': u'0x0000C47F51019B7D', u'cts': [{u'p_W': 1489, u'q_VAR': 305, u'v_V': 122.434, u'ct': 1}, {u'p_W': 1872, u'q_VAR': 237, u'v_V': 120.981, u'ct': 2}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 0.0, u'ct': 3}, {u'p_W': 0, u'q_VAR': 0, u'v_V': 122.432, u'ct': 4}], u'timestamp': u'2016-12-24T15:03:42Z'}

In [38]: json.dumps(d)
Out[38]: '{"sensorId": "0x0000C47F51019B7D", "timestamp": "2016-12-24T15:03:42Z", "cts": [{"q_VAR": 305, "ct": 1, "v_V": 122.434, "p_W": 1489}, {"q_VAR": 237, "ct": 2, "v_V": 120.981, "p_W": 1872}, {"q_VAR": 0, "ct": 3, "v_V": 0.0, "p_W": 0}, {"q_VAR": 0, "ct": 4, "v_V": 122.432, "p_W": 0}], "channels": [{"q_VAR": 305, "type": "PHASE_A_CONSUMPTION", "p_W": 1489, "v_V": 122.434, "ch": 1, "eImp_Ws": 55554346060, "eExp_Ws": 23}, {"q_VAR": 237, "type": "PHASE_B_CONSUMPTION", "p_W":
1872, "v_V": 120.981, "ch": 2, "eImp_Ws": 62495160471, "eExp_Ws": 23}, {"q_VAR": 542, "type": "CONSUMPTION", "p_W": 3360, "v_V": 121.708, "ch": 3, "eImp_Ws": 118049506582, "eExp_Ws": 41}]}'

来自requests.get的JSON数据无效

2 个答案: