flask响应原生ajax的post,从AJAX向Flask发出POST请求时响应500

var count = 1;

// get a tweet from backend

function display_tweet(){

var req = {

"index": count

}

.ajax({

type: "POST",

url: "get_tweet",

data: '{"id":"' + count+'}',

dataType: "json",

success: function(data) {

alert(data.d);

},

error: function(data){

alert("fail");

}

});

}

下面是我的蟒蛇应用程序副本文件

@app.route('/get_tweet',methods = ['POST'])

def get_tweet():

#user_agent_received = request.get_json()

#print("request is ",request.form)

print("request ",request.get_json())

global data_dict

print(data_dict)

input_map = dict(request.form.to_dict())

print(input_map)

index=input_map['index']

index=int(str(index))

final_dic={}

final_dic["text"]=data_dict[index]["tweet"]["full_text"]

return json.dumps(final_dic)

下面是我的存根索引.html文件

display a new tweet

我继续得到一个空的json,后端有500个内部错误,如下所示。有人能帮忙吗

{}

127.0.0.1 - - [04/Feb/2020 23:02:07] "POST /get_tweet HTTP/1.1" 500 -