Node.JS无法调用在其他端口上的本地主机上运行的服务 [英] Node.JS Unable to call a service running on localhost on different port

问题描述

我要执行的操作是我的应用程序在端口3030的localhost上运行我已经写了这段代码

What i am trying to do is that that my application is running on localhost on port 3030 i have written this code

var request = require('request');

request("http://127.0.0.1:3000/showdb", function (error, response, body) {
    if(error)
        console.log("ERROR IS :"+error);

    if (!error && response.statusCode == 200) {
        console.log("body"+body) // Print the google web page.
        res.send(body);
    }
})

所以我在本地主机上调用另一个在端口3000上运行的应用程序服务(本地主机的默认IP为127.0.0.1).但是，此请求始终无法正常工作，并且错误输出错误:解析错误".我的端口3030的服务已成功调用，但在该服务中该请求从未被调用.任何帮助将不胜感激.

so i am calling another service of application running on port 3000 on my localhost.(127.0.0.1 default ip for localhost). But its not working this request is never made and error outputs "Error: Parse Error". My service of port 3030 is successfully called but in that service that request is never called. Any help would be greatly appreciated.

这是此服务返回的杰森("/showdb")

Here is the jason returned by this service ("/showdb")

结果:[{名称:"bridgevine"，sizeOnDisk:486539264，空:错误}，{名称:"crud"，sizeOnDisk:218103808，空:错误}，{名称:"exascaleDb"，sizeOnDisk:486539264，空:错误}，{名称:本地"，sizeOnDisk:83886080，空:错误}，{名称:"mydb"，sizeOnDisk:218103808，空:错误}，{名称:"test"，sizeOnDisk:218103808，空:错误}，{名称:"winedb"，sizeOnDisk:218103808，空:错误}]

result: [ { name: "bridgevine", sizeOnDisk: 486539264, empty: false }, { name: "crud", sizeOnDisk: 218103808, empty: false }, { name: "exascaleDb", sizeOnDisk: 486539264, empty: false }, { name: "local", sizeOnDisk: 83886080, empty: false }, { name: "mydb", sizeOnDisk: 218103808, empty: false }, { name: "test", sizeOnDisk: 218103808, empty: false }, { name: "winedb", sizeOnDisk: 218103808, empty: false } ]

推荐答案

我怀疑解析错误发生在以下任一行中:

I'd suspect the parse error happens in either of these lines:

    console.log("body"+body) // Print the google web page.
    res.send(body);

注释一个或另一个.将主体包装在JSON.stringify(body)中.如果此问题得以解决，则意味着3000服务器正在发送JSON，但您的行为就像是文本.

Comment one or the other out. Wrap body in JSON.stringify(body). If this fixes, it means the 3000 server is sending JSON but you are acting like it is text.

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