如何用jQuery查询neo4j图 [英] How to query neo4j graph with jQuery

问题描述

[早期版本在我试用时已经更新]

[earlier version has been updated as I try things]

我知道一些javascript，我有一个工作的neo4j数据库我可以在控制台中使用cypher进行查询。此外，这个卷曲有效：

I do know some javascript and I have a working neo4j db I can query with cypher in a console. Also, this curl works:

curl -X POST http：// localhost：7474 / db / data / cypher --data @ test.json -H
accept：application / json -H content-type：application / json -H
X-Stream：true

curl -X POST http://localhost:7474/db/data/cypher --data @test.json -H accept:application/json -H content-type:application/json -H X-Stream:true

但是我想用jQuery $ ajax调用得到结果 - 真的，任何方式我都可以在javascript中获得JSON结果，不必是jQuery

But I want to get results with jQuery $ajax call -- really, any way I can get the JSON result in javascript, doesn't have to be jQuery

此函数产生消息：

500意外字符（' q'（代码113））：在[来源：
java.io.StringReader]预期有效值
（数字，字符串，数组，对象，'true'，'false'或'null'） @ 56f31ac6; line：1，column：2]

500 Unexpected character ('q' (code 113)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') at [Source: java.io.StringReader@56f31ac6; line: 1, column: 2]

提前感谢，
Karl

thanks in advance, Karl

 function getsomething() {
  var serverURL = "http://localhost:7474/db/data"
  $.ajax({
    type:"POST",
    url: serverURL + "/cypher",
    accepts: "application/json",
    dataType: "json",
    contentType:"application/json",
    headers: { 
      "X-Stream": "true"    
    },
    data:{ "query" : "start n = node(1) return n;"  },
    success: function(data, textStatus, jqXHR){
     alert(textStatus);
    },
    error: function(jqXHR, textStatus, errorThrown){
     alert(errorThrown);
     console.log(textStatus);
    }
  });//end of ajax
  } //end of getSomething()
 getsomething();

推荐答案

您需要使用HTTP方法 POST 与 db / data / cypher 端点进行通信。所以尝试设置

You need to use HTTP method POST to talk to db/data/cypher endpoint. So try to set

type: "POST",

致电 $。ajax 。

免责声明：没试过自己，只是从臀部拍摄

disclaimer: didn't try that myself, just a shoot from the hip

你需要包装数据部分使用 JSON.stringify ：

you need to wrap the data part using JSON.stringify:

 data: JSON.stringify({
       "query" : "start n = node(*) return n;",
       "params" : {}
     }),

这篇关于如何用jQuery查询neo4j图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！