这里主要是回数据给前端，其中Json，和模板最为常见
程序运行截图如下：
字符串：
Json：
模板：
程序结构如下：
源码如下：
application.py
from flask import Flask
from controller import index_page
app = Flask(__name__)
app.register_blueprint(index_page, url_prefix = "/it1995")
if __name__ == "__main__":
app.run(host = "0.0.0.0", debug=True)controller.py
from flask import Flask, Blueprint, request, make_response, jsonify, render_template
index_page = Blueprint("index_page", __name__)
@index_page.route("/text")
def text():
return "text/html"
@index_page.route("/text_same")
def text_same():
response = make_response("text/html", 200)
return response
@index_page.route("/json")
def json():
import json
data = {"a" : "b"}
response = make_response(json.dumps(data))
response.headers["Content-Type"] = "application/json"
return response
@index_page.route("/json_same")
def json_same():
data = {"a" : "b"}
response = make_response(jsonify(data))
return response
@index_page.route("/template")
def template():
name = "Hello World"
context = {"name" : name}
context['user'] = {"nickname" : "IT1995", "qq" : "570176391", "url" : "www.it1995.cn"}
context['num_list'] = [1, 2, 3, 4, 5]
return render_template("index.html", **context)
@index_page.route("/index3")
def index3page():
return render_template("index3.html")
@index_page.route("/index4")
def index4page():
return render_template("index4.html")layout.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>统一模版</title>
</head>
<body>
{%block content%}
{%endblock%}
</body>
</html>index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
Hello
<p>
{% if user %}
{{user.nickname}} 联系QQ: {{user.qq}} 主页: {{user.url}}
{% endif %}
</p>
<p>
{% for tmp_num in num_list %}
{{tmp_num}}
{% endfor %}
</p>
</body>
</html>index3.html
{% extends "common/layout.html" %}
{% block content %}
How are you
{% endblock %}index4.html
{% extends "common/layout.html" %}
{% block content %}
How old are you
{% endblock %}