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html - node.js为啥抓取不了前端传过来的数据？

用node.js抓取不了前端表单的数据，哭哭哭
这是node.js代码

var http=require("http");
var url=require("url");
var dns=require("dns");
var fs=require("fs");
var querystring=require("querystring");
var postdata="";
http.createServer(function(req,res){
    
        req.setEncoding("utf8");
    //var readPath=dirname+"/"+url.parse('a.html').pathname;
    var pathname=url.parse(req.url).pathname;

    if(pathname==="/"){
        res.writeHead(200,{'Content-Type':'text/html'});
        var indexpage=fs.readFileSync("a.html");
    //console.log(indexpage);
    res.end(indexpage);
    }
    if(pathname==="/about"){
        res.writeHead(200,{'Content-Type':'text/plain'});
        
        
        req.addListener("data",function(chunk){
            if(chunk){
                postdata+=chunk;
               console.log(chunk);
            }
            
            else
                console.log("no data emit")
        });
            req.addListener("end",function(postdata){
                var a=querystring.parse(postdata);
                console.log(postdata)
                console.log(a);
                res.end(a.text);
            });
        }

    
    console.log("Server has been running on port 3000");
    
}).listen("3000","127.0.0.1");

这是HTML代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="sinson">
</head>
<body>
<form action="/about" method="get">
<input type="text" name="text">
<input type="submit" value="提交">
</form>
</body>
</html>

求大神指教

ringa_leeringa_lee2766 days ago648

reply all(1)I'll reply

  • 高洛峰

    高洛峰2017-04-17 15:02:14

    You only processed the body part of the data, but the front-end submission method is get...
    It is recommended to understand the basic difference between get and post...

    After modification
    app.js

    var http = require("http");
var url = require("url");
var dns = require("dns");
var fs = require("fs");
var querystring = require("querystring");
var postdata = "";
http.createServer(function (req, res) {
  req.setEncoding("utf8");
  // var readPath=dirname+"/"+url.parse('a.html').pathname;
  var pathname = url.parse(req.url).pathname;
  if (pathname === "/") {
    res.writeHead(200, { 'Content-Type': 'text/html' });
    var indexpage = fs.readFileSync("a.html");
    // console.log(indexpage);
    res.end(indexpage);
  }
  if (pathname === "/about") {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    req.addListener("data", function (chunk) {
      if (chunk) {
        postdata += chunk;
        console.log(chunk);
      } else
        console.log("no data emit");
    });
    req.addListener("end", function () { //去掉参数
      var a = querystring.parse(postdata);
      console.log(postdata);
      console.log(a);
      res.end(a.text);
    });
  }
}).listen("3000", "127.0.0.1");
console.log("Server has been running on port 3000");//提到外面比较好

    a.html

    <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="sinson">
</head>
<body>
<form action="/about" method="POST"> <!--改为POST-->
<input type="text" name="text">
<input type="submit" value="提交">
</form>
</body>
</html>

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