Javascript node.js-带base64的http

我是node.js的新手，一直在尝试实现base64编码。我的服务器似乎没有接收/处理base64消息。代码如下：

服务器：

var http = require('http');
http.createServer(function (req, res) {
  req.on('data',function(b) {
    console.log("HEY!"); // <--- Never gets called
    var content = new Buffer(b, 'base64').toString('utf8')
    console.log("CLIENT SAID: "+content);
    var msg = JSON.parse(content);
    // do stuff and respond here...
  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

var http = require('http');
http.createServer(function (req, res) {
  var content = '';
  req.on('data', function (chunk) {
    content += chunk;
  });
  req.on('end', function() {
    content = content.toString('base64');
    console.log(content);
    //content returns {"name": "Fred","age": 23};

    res.end();
  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

---

知道我做错了什么吗

我想出了一个解决办法。我注意到当使用

req.write（数据'base64'）请求从未结束。相反，我创建了一个base64编码的缓冲区，然后将其写入请求

在localhost上测试了这些精确的代码段：

客户：

var http = require('http');
var options = {
  hostname : 'localhost',
  port     : 1337,
  method   : 'POST'
};
var req = http.request(options, function(res) {
  res.setEncoding('base64');
  res.on('data', function (chunk) {
    console.log('BODY: ' + chunk);
  });
});
req.on('error', function(e) {
  console.log('problem with request: ' + e.message);
});

// write data to request body
var msg = {'name':'Fred','age':23};
var msgS = JSON.stringify(msg);
req.write(msgS,'base64');
req.end();

var http = require('http');
var options = {
  hostname: 'localhost',
  port: 1337,
  method: 'POST'
};
var req = http.request(options, function (res) {
  res.setEncoding('base64');
  res.on('data', function (chunk) {
    console.log('BODY: ' + chunk);
  });
});

req.on('error', function(e) {
  console.log('problem with request: ' + e.message);
});

var msg = {
  'name': 'Fred',
  'age': 23
};
var msgS = JSON.stringify(msg);
var buf = new Buffer(msgS, 'base64');

req.write(msgS);
req.end();

服务器：

var http = require('http');
http.createServer(function (req, res) {
  req.on('data',function(b) {
    console.log("HEY!"); // <--- Never gets called
    var content = new Buffer(b, 'base64').toString('utf8')
    console.log("CLIENT SAID: "+content);
    var msg = JSON.parse(content);
    // do stuff and respond here...
  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

var http = require('http');
http.createServer(function (req, res) {
  var content = '';
  req.on('data', function (chunk) {
    content += chunk;
  });
  req.on('end', function() {
    content = content.toString('base64');
    console.log(content);
    //content returns {"name": "Fred","age": 23};

    res.end();
  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

除此之外，我还注意到了代码中的这些错误

req.on('data',function(b) {
  var content = new Buffer(b, 'base64').toString('utf8')
});

请注意，在本例中，
b
实际上已经是一个缓冲区。您应该使用
b.toString（'base64'）。还要注意，
b
实际上只是数据的片段。相反，您应该收集
b
的数据，然后收听
end
事件以最终对数据进行处理。对于
req.write（数据'base64'），末端永远不会触发，导致挂起而不是触发事件

以下是您收集数据的方式：

var content = '';
req.on('data', function(b) {
  content += b;
});
req.on('end', function() {
  //do something with content
});

看看这个：