在Javascript中的Neo4j：参数不能查询
使用thingdom的neo4j插件时遇到了麻烦。 看起来插件不能识别{mlabel}和{mdata}作为占位符。 代码和错误如下。
非常感谢你！
var query = [ 'CREATE (p:{mlabel} {{mdata}})', 'RETURN p' ].join('\n'); var params = { mlabel : 'person', mdata : { name: 'Pete', surname: 'Strutton', age: 35 } }; this.db.query(query, params, function (err, results) { if (err) throw err; return result; }); Error: Invalid input '{': expected whitespace or a label name (line 1, column 11) "CREATE (p:{mlabel} {{mdata}})" ^ at exports.adjustError (C:\Spree Github Repository\Phone\express\SpreeRouter \node_modules\neo4j\lib\util.js:71:15) at __$GraphDatabase_prototype_query__20 (C:\Spree Github Repository\Phone\ex press\SpreeRouter\node_modules\neo4j\lib\GraphDatabase.js:942:26) at C:\Spree Github Repository\Phone\express\SpreeRouter\node_modules\neo4j\l ib\GraphDatabase.js:2:6247 at Object.__g.trampoline.flush (C:\Spree Github Repository\Phone\express\Spr eeRouter\node_modules\neo4j\lib\Node.js:2:3552) at Request.___ [as _callback] (C:\Spree Github Repository\Phone\express\Spre eRouter\node_modules\neo4j\lib\GraphDatabase.js:2:5602) at Request.self.callback (C:\Spree Github Repository\Phone\express\SpreeRout er\node_modules\neo4j\node_modules\request\request.js:372:22) at Request.emit (events.js:98:17) at Request.<anonymous> (C:\Spree Github Repository\Phone\express\SpreeRouter \node_modules\neo4j\node_modules\request\request.js:1317:14) at Request.emit (events.js:117:20) at IncomingMessage.<anonymous> (C:\Spree Github Repository\Phone\express\Spr eeRouter\node_modules\neo4j\node_modules\request\request.js:1265:12)
解：
你不能在任何地方参数化你的查询select器。 您只能将数据放入查询中。 以上不起作用，但下面的查询会：
var query = [ 'CREATE (p:LABEL {mdata})', 'RETURN p' ].join('\n').replace('LABEL', label); var params = { mdata : data }; this.db.query(query, params, function (err, results) { if (err) throw err; console.log(results); return results[0]; });