我正在尝试在Neo4j中使用Ajax查询整个图数据库。下面是我的ajax代码。

$.ajax({  
    type: "POST",  
    url: "http://localhost:7474/db/data/transaction/commit ",  
    dataType: "json",  
    contentType: "application/json;charset=UTF-8",  
    data: JSON.stringify({"statements": [{"statement": "MATCH (n) OPTIONAL MATCH (n)-[r]-() RETURN n,r"}]}),  
    success: function (data, textStatus, jqXHR) {  
        $(".neo4jResponse").html(JSON.stringify(data));  
    },  
    error: function (jqXHR, textStatus, errorThrown) {  
        alert("Error");  
    }  
});`

它将响应返回为：

{    
    "results":
    [
        {
            "columns":["n","r"],
            "data":
            [
                {"row":[{"title":"Tourism","name":"Tourism"},{}]},
                {"row":[{"title":"Tourism","name":"Tourism"},{}]},
                {"row":[{"title":"Coastal Debris","name":"Coastal Debris"},{}]},
                {"row":[{"title":"Coastal Debris","name":"Coastal Debris"},{}]},
                {"row":[{"title":"Quality","name":"Quality"},{}]},
                {"row":[{"title":"Quality","name":"Quality"},{}]},
                {"row":[{"title":"Recreational Value","name":"Recreational Value"},{}]},
                {"row":[{"title":"Recreational Value","name":"Recreational Value"},{}]},
                {"row":[{"title":"Eco-Tourism Incentives","name":"Eco-Tourism Incentives"},{}]},
                {"row":[{"title":"Eco-Tourism Incentives","name":"Eco-Tourism Incentives"},{}]},
                {"row":[{"title":"Eco-Tourism","name":"Eco-Tourism"},{}]},
                {"row":[{"title":"Eco-Tourism","name":"Eco-Tourism"},{}]}
            ]
        }
    ],
    "errors":[]
}

为什么我无法获得关系？任何建议都会有所帮助。

注意-所有节点在Neo4j中通过关系连接。