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跨域请求-CORS

 

跨域请求 服务端设置即可
    1 浏览器的同源策略
    2 简单请求:发一次请求
        response[Access-Control-Allow-Origin] = *
        response[Access-Control-Allow-Origin] = http://127.0.0.1:8008,http://127.0.0.1:8009
    2 非简单请求:发两次,一次预检(OPTIONS),第二次是真正的请求
        if request.method==OPTIONS:
            response[Access-Control-Allow-Methods]=PUT,DELETE
            response[Access-Control-Allow-Headers]=Content-Type
    建议写再中间件里
    注释:里面尽量不要写(*),都支持(*)

 

8001:ajax请求跨域

<!DOCTYPE html>
<html lang="en">
<head>
    <Meta charset="UTF-8">
    {% load static %}
    <script src="{% static ‘jquery-3.3.1.js‘ %}"></script>
    <title>Title</title>
</head>
<body>
<button id="mybutton">点我</button>
</body>
<script>
    $("#mybutton").click(function () {
        $.ajax({
            url:http://127.0.0.1:8000/mytest/,type:get,headers:{k1:dddd},success:function (data) {
                console.log(data)
            }
        })
    })
</script>
</html>

 

 

8000: 服务端配置跨域

    settings: 中间件配置
    ‘app01.mymiddle.MyMiddle‘
    
    mymiddle:新建中间件文件:
    from django.utils.deprecation import MiddlewareMixin

    class MyMiddle(MiddlewareMixin):
        def process_response(self,request,response):
            if request.method == ‘OPTIONS‘:
                response[‘Access-Control-Allow-Methods‘] = ‘PUT‘
                response[‘Access-Control-Allow-Headers‘] = ‘k1‘
            response[‘Access-Control-Allow-Origin‘] = ‘*‘
            return response

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