我正在尝试使用 Node 将 JSON 数据发送到 Flask，但我无法读取 Flask 中的数据。我尝试在 Flask 中打印 request.data 但它没有输出任何内容。我还尝试打印 request.json，但它返回了 400 响应。为什么 Flask 看不到 Node 发送的 JSON 数据？
from flask import Flask
from flask import request
app = Flask(__name__)
@app.route("/", methods=['GET', 'POST'])
def hello():
if request.method == "POST":
print "POST";
print "get_json: ", request.get_json();
# print "get_json: ", request.get_json(force = True);
print "data: ", request.data;
return 'POST';
else:
print "GET";
return "GET";
if __name__ == "__main__":
app.run()
var async = require('async'),
http = require('http'),
util = require('util');
var server = {
hostname: '127.0.0.1',
port: 5000
};
function request(method, path, headers, body, callback) {
var req = {};
if(!headers) {
headers = {};
}
headers['Content-Type'] = 'application/json';
console.log(method + ' ' + path);
console.log(' Req:');
console.log(' headers: ' + JSON.stringify(headers));
if(body) {
console.log(' body : ' + JSON.stringify(body));
} else {
console.log(' no body');
}
req = http.request({
hostname: server.hostname,
port: server.port,
path: path,
method: method,
headers: headers
}, (res) => {
var resbody = '';
res.on('data', (chunk) => {
resbody = resbody + chunk;
});
res.on('end', () => {
console.log(' Res:');
console.log(' headers: ' + JSON.stringify(res.headers));
if(body) {
console.log(' body : ' + JSON.stringify(resbody));
} else {
console.log(' no body');
}
callback(resbody);
});
}
);
req.on('error', (err) => {
console.log(method + ' ' + path + ' ERR: ' + util.inspect(err));
callback(err);
});
if(body) {
req.write(JSON.stringify(body));
}
req.end();
}
request('POST', '/', null, {foo: 'bar'}, (res) => {});
JavaScript 的输出:
POST /
Req:
headers: {"Content-Type":"application/json"}
body : {"foo":"bar"}
Res:
headers: {"content-type":"text/html","content-length":"192","server":"Werkzeug/0.11.11 Python/2.7.11","date":"Fri, 09 Sep 2016 10:29:58 GMT"}
body : "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n<title>400 Bad Request</title>\n<h1>Bad Request</h1>\n<p>The browser (or proxy) sent a request that this server could not understand.</p>\n"
Python 的输出:
POST
get_json: 127.0.0.1 - - [09/Sep/2016 12:29:58] "POST / HTTP/1.1" 400 -
编辑以更新所有代码。
curl :
> curl.exe 127.0.0.1:5000 --header "Content-Type: application/json" --data {\"foo\":\"bar\"}
POST
最佳答案
Python Server 没有问题，运行正常，问题出在手工制作的 http 请求上，由于某种原因格式不正确。
使用 request模块工作:
var request = require('request');
request({
method: 'POST',
url: 'http://127.0.0.1:5000',
// body: '{"foo": "bar"}'
json: {"foo": "bar"}
}, (error, response, body) => {
console.log(error);
// console.log(response);
console.log(body);
});
关于javascript - Flask 看不到 Node 发送的 JSON 数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39395798/