当我尝试以下列方式设置 header 时，它工作得非常好。
response.setHeader('Content-Type', 'application/json');
但是当我尝试通过以下方式添加变量而不是确切的 header 名称/值时，它显示错误:-(
response.setHeader(result.headers);
如果你使用 console.log("headers -> "+ result.header) 结果会是一样的。
headers -> 'Content-Type', 'application/json'
以下是我遇到的确切错误，无法弄清楚如何解决它。
_http_outgoing.js:487
throw new TypeError(`Header name must be a valid HTTP Token ["${name}"]`);
^
TypeError: Header name must be a valid HTTP Token ["'Content-Type', 'application/json'"]
at validateHeader (_http_outgoing.js:487:11)
at ServerResponse.setHeader (_http_outgoing.js:498:3)
at C:\service-mocker\src\main\app.js:54:22
at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:511:3)
下面是我要实现的全部代码:
var http = require('http');
var fs = require('fs');
var path = require('path');
var repl = require('repl');
var map={};
var key;
var value;
//create a server object:
var server = http.createServer(function(request, response) {
fs.readFile("./resources/FileData1.txt", function(err, data) {
if(err) throw err;
content = data.toString().split(/(?:\r\n|\r|\n)/g).map(function(line){
return line.trim();
}).filter(Boolean)
var result = processFile(content);
console.log("url -> " + result.url);
console.log("status -> " + result.status);
console.log("headers -> " + result.headers);
console.log("body -> " + result.body);
function objToString (obj) {
var str = '';
for (var p in obj) {
if (obj.hasOwnProperty(p)) {
str += obj[p] + '\n';
}
}
return str;
}
function processFile(nodes) {
nodes.forEach(function(node) {
if(node.startsWith("//")){
key = node.substring(2, node.length-2).toLowerCase().trim();
return;
}
else{
value = node;
}
// map[key] = value;
if(key in map){
map[key].push(value);
}else{
map[key]= [value];
}
});
return map;
// console.log(map);
}
if(request.url == result.url ){
response.setHeader(result.headers);
// response.setHeader('Content-Type', 'application/json');
response.write( objToString(result.body) );
response.statuscode = parseInt( result.status );
response.end();
}else {
// response.writeHead(404, {"Content-Type": "text/html"});
response.end("No Page Found");
}
});
});
var port = process.env.PORT || 8080;
server.listen(port, function() {
console.log('Listening on port ' + port);
});
最佳答案
看起来 result.headers 返回单个字符串，但 response.setHeader 需要两个参数: header 名称和 header 值。
根据错误消息，您正在执行以下操作:
response.setHeader("'Content-Type', 'application/json'");
相反，您需要将 header 拆分为键和值:
//n.b. make sure that your result only has the one header!
var headerSplit = result.headers.split(',');
var headerKey = headerSplit[0];
var headerVal = headerSplit[1];
response.setHeader(headerKey, headerVal);
关于javascript - Node.js HTTP - 类型错误 : Header name must be a valid HTTP Token，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50418273/