我想将
JavaScript .apply方法用于为Node.js编译的thrift的函数. thrift .js文件的代码如下：
...
var NimbusClient = exports.Client = function(output,pClass) {
this.output = output;
this.pClass = pClass;
this.seqid = 0;
this._reqs = {};
};
NimbusClient.prototype = {};
NimbusClient.prototype.getClusterInfo = function(callback) {
this.seqid += 1; // line where error is thrown [0]
this._reqs[this.seqid] = callback;
this.send_getClusterInfo();
};
...
我的服务器文件看起来如下：
var thrift = require('thrift'),nimbus = require('./Nimbus'),connection = thrift.createConnection('127.0.0.1',6627),client = thrift.createClient(nimbus,connection),... // server initiation etc
app.get('/nimbus/:command',function(req,res,next) {
client[req.params.command](console.log); // direct call [1]
client[req.params.command].apply(this,[console.log]); // apply call [2]
});
...
直接调用[1]按预期返回值,但apply call [2]总是在行[0]中产生以下错误：
TypeError: Cannot set property 'NaN' of undefined
我在[2]中尝试了其他几个范围参数：null,nimbus,nimbus.Client,nimbus.Client.prototype,nimbus.Client.prototype [req.params.command]和client [req.params.command],都没有成功.
