Executing a Cypher query on Neo4j using jQuery

Question

I am trying to make an Ajax call with jQuery to a Neo4j Server, both on the same machine, but I keep getting errors in the response. This is how I wrote the ajax call: ``` var request = $.ajax({ type: "POST", url: "http://localhost:7474/db/data/cypher", accepts: "application/json", dataType: "json", contentType:"application/json", data: JSON.stringify({ "query" : "MATCH n RETURN n LIMIT 1", "params": {} }) }); ``` When I execute this code, in FireBug I see: ``` "NetworkError: 400 Bad Request - http://localhost:7474/db/data/cypher" ``` And in the response to the POST request I find the following body: ``` Error

WebApplicationException at org.neo4j.server.rest.repr.formats.HtmlFormat.serializeMapping(HtmlFormat.java:348) at org.neo4j.server.rest.repr.RepresentationFormat.serializeMapping(RepresentationFormat.java:73) at org.neo4j.server.rest.repr.MappingRepresentation.serialize(MappingRepresentation.java:39) at org.neo4j.server.rest.repr.Ou…

Accepted Answer

In the snippet you've supplied a more complex `Accepts` header is sent that Neo4j cannot deal with. I've used the following snippets:

```
var request = $.ajax({
    type: "POST",
    url: "http://localhost:7474/db/data/cypher",
    accepts: { json: "application/json" },
    dataType: "json",
    contentType:"application/json",
    data: JSON.stringify({ "query" : "MATCH n RETURN n LIMIT 1", "params": {} })
 });
```

Omitting both, `accepts` and `dataType` seems to work as well:

```
var request = $.ajax({
    type: "POST",
    url: "http://localhost:7474/db/data/cypher",
    contentType:"application/json",
    data: JSON.stringify({ "query" : "MATCH n RETURN n LIMIT 1", "params": {} })
 });
```

Executing a Cypher query on Neo4j using jQuery

Solution

Problem