下面是我的JSON树。如果所有Typedefinition的条件，如何访问给定树和框架中的Typedefinition属性。我必须遍历树找到
if (typedefinition == "ciu'){//do something}
else if(typedef == Tank )
else if( hostport)
else if( fieldport)
并为每个人做一些事情。我必须遍历这棵树并制造这样的条件。
{
"Resp_Data":
{
"SiteElements":
[
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge00",
"ID": "1"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2003",
"Index": "1",
"Value": "00"
},
{
"EntityId": "2006",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2004",
"Index": "1",
"Value": "B"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
},
{
"EntityId": "9007",
"Index": "1",
"Value": "1"
},
{
"EntityId": "9703",
"Index": "1",
"Value": "0"
}
],
"Connections":
[
{
"SourceElementID": "2",
"DestinationElementID": "1"
}
]
},
{
"SiteElementDef":
[
{
"SiteElementName": "Tank1",
"ID": "2"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "TANK",
"ID": "3"
}
],
"Entities": "",
"Connections":
[
{
"SourceElementID": "5",
"DestinationElementID": "2"
},
{
"SourceElementID": "2",
"DestinationElementID": "1"
}
]
},
{
"SiteElementDef":
[
{
"SiteElementName": "CIU1",
"ID": "3"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "CIU",
"ID": "4"
}
],
"Entities":
[
{
"EntityId": "7050",
"Index": "1",
"Value": "2"
},
{
"EntityId": "9006",
"Index": "1",
"Value": "1"
},
{
"EntityId": "7050",
"Index": "2",
"Value": "8"
},
{
"EntityId": "7050",
"Index": "3",
"Value": "7"
},
{
"EntityId": "3037",
"Index": "1",
"Value": "1"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "\/dev\/ttyS1",
"ID": "4"
},
{
"Parent": "CIU1",
"ID": "3"
},
{
"TypeDefinition": "HOSTPORT",
"ID": "5"
}
],
"Entities":
[
{
"EntityId": "5022",
"Index": "1",
"Value": "9600"
},
{
"EntityId": "5027",
"Index": "1",
"Value": "3"
},
{
"EntityId": "5020",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5024",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5034",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5025",
"Index": "1",
"Value": "2"
},
{
"EntityId": "5019",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5006",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5012",
"Index": "1",
"Value": "3302"
},
{
"EntityId": "5012",
"Index": "2",
"Value": "2801"
},
{
"EntityId": "5013",
"Index": "1",
"Value": "10000"
},
{
"EntityId": "5013",
"Index": "2",
"Value": "100"
},
{
"EntityId": "5014",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5014",
"Index": "2",
"Value": "30000"
},
{
"EntityId": "5006",
"Index": "2",
"Value": "1"
},
{
"EntityId": "5006",
"Index": "3",
"Value": "2"
},
{
"EntityId": "5005",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5007",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5009",
"Index": "1",
"Value": "3"
},
{
"EntityId": "5008",
"Index": "1",
"Value": "4"
},
{
"EntityId": "5011",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5011",
"Index": "2",
"Value": "2"
},
{
"EntityId": "9015",
"Index": "1",
"Value": "1"
},
{
"EntityId": "9016",
"Index": "1",
"Value": "1"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "\/dev\/ttyS0",
"ID": "5"
},
{
"Parent": "CIU1",
"ID": "3"
},
{
"TypeDefinition": "FIELDPORT",
"ID": "6"
}
],
"Entities":
[
{
"EntityId": "3504",
"Index": "1",
"Value": "40"
},
{
"EntityId": "3507",
"Index": "1",
"Value": "9000"
},
{
"EntityId": "3510",
"Index": "1",
"Value": "2"
},
{
"EntityId": "9011",
"Index": "1",
"Value": "7"
},
{
"EntityId": "9012",
"Index": "1",
"Value": "CIU1"
},
{
"EntityId": "3501",
"Index": "1",
"Value": "4"
},
{
"EntityId": "3502",
"Index": "1",
"Value": "0"
},
{
"EntityId": "3503",
"Index": "1",
"Value": "2"
},
{
"EntityId": "3505",
"Index": "1",
"Value": "0"
},
{
"EntityId": "3500",
"Index": "1",
"Value": "BPM-GPU"
},
{
"EntityId": "9013",
"Index": "1",
"Value": "3"
}
],
"Connections":
[
{
"SourceElementID": "5",
"DestinationElementID": "2"
}
]
},
{
"SiteElementDef":
[
{
"SiteElementName": "CIU2",
"ID": "6"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "CIU",
"ID": "4"
}
],
"Entities": "",
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Tank2",
"ID": "7"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "TANK",
"ID": "3"
}
],
"Entities": "",
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Tank3",
"ID": "8"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "TANK",
"ID": "3"
}
],
"Entities": "",
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge11",
"ID": "9"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2011",
"Index": "1",
"Value": "11"
},
{
"EntityId": "2012",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2013",
"Index": "1",
"Value": "C"
},
{
"EntityId": "9008",
"Index": "1",
"Value": "0"
},
{
"EntityId": "2016",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge22",
"ID": "10"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2003",
"Index": "1",
"Value": "22"
},
{
"EntityId": "2004",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2006",
"Index": "1",
"Value": "B"
},
{
"EntityId": "9007",
"Index": "1",
"Value": "1"
},
{
"EntityId": "9703",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge33",
"ID": "11"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2011",
"Index": "1",
"Value": "33"
},
{
"EntityId": "2012",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2013",
"Index": "1",
"Value": "C"
},
{
"EntityId": "9008",
"Index": "1",
"Value": "0"
},
{
"EntityId": "2016",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge44",
"ID": "12"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2011",
"Index": "1",
"Value": "44"
},
{
"EntityId": "2012",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2013",
"Index": "1",
"Value": "C"
},
{
"EntityId": "9008",
"Index": "1",
"Value": "0"
},
{
"EntityId": "2016",
"Index": "1",
"Value": "1"
},
{
"EntityId": "2003",
"Index": "1",
"Value": "44"
},
{
"EntityId": "2004",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2006",
"Index": "1",
"Value": "B"
},
{
"EntityId": "9007",
"Index": "1",
"Value": "1"
},
{
"EntityId": "9703",
"Index": "1",
"Value": "0"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "Gauge55",
"ID": "13"
},
{
"Parent": "",
"ID": ""
},
{
"TypeDefinition": "GAUGE",
"ID": "2"
}
],
"Entities":
[
{
"EntityId": "2011",
"Index": "1",
"Value": "55"
},
{
"EntityId": "2012",
"Index": "1",
"Value": "B"
},
{
"EntityId": "2013",
"Index": "1",
"Value": "C"
},
{
"EntityId": "9008",
"Index": "1",
"Value": "0"
},
{
"EntityId": "2016",
"Index": "1",
"Value": "1"
},
{
"EntityId": "5",
"Index": "1",
"Value": "54"
}
],
"Connections": ""
},
{
"SiteElementDef":
[
{
"SiteElementName": "\/dev\/ttyS1",
"ID": "14"
},
{
"Parent": "CIU1",
"ID": "3"
},
{
"TypeDefinition": "FIELDPORT",
"ID": "6"
}
],
"Entities":
[
{
"EntityId": "3501",
"Index": "1",
"Value": "4"
},
{
"EntityId": "9011",
"Index": "1",
"Value": "7"
},
{
"EntityId": "3503",
"Index": "1",
"Value": "2"
},
{
"EntityId": "3502",
"Index": "1",
"Value": "0"
},
{
"EntityId": "3505",
"Index": "1",
"Value": "0"
},
{
"EntityId": "9012",
"Index": "1",
"Value": "CIU1"
},
{
"EntityId": "9013",
"Index": "1",
"Value": "2"
},
{
"EntityId": "3504",
"Index": "1",
"Value": "40"
},
{
"EntityId": "3507",
"Index": "1",
"Value": "9000"
},
{
"EntityId": "3510",
"Index": "1",
"Value": "2"
}
],
"Connections": ""
}
]
}
}
答案 0 :(得分：0)
试试这个：
var result=myJSONObject.Resp_Data.SiteElements[0].SiteElementDef[0].TypeDefinition
将您的上述json分配给myJSONObject，然后尝试此代码。
答案 1 :(得分：0)
简单
if (!obj.TypeDefinition) {
// ..
}
else if (obj.TypeDefinition == "GAUGE") {
// ..
} // ...