方法一：

如果用jQuery来处理ajax的话，Django直接送了一段解决问题的代码。把它放在一个独立的js文件中，在html页面中都引入即可。注意这个js文件必须在jquery的js文件引入之后，再引入即可
[javascript] view plain copy
$(document).ajaxSend(function(event, xhr, settings) { 
    function getCookie(name) { 
        var cookieValue = null; 
        if (document.cookie && document.cookie != '') { 
            var cookies = document.cookie.split(';'); 
            for (var i = 0; i < cookies.length; i++) { 
                var cookie = jQuery.trim(cookies[i]); 
                // Does this cookie string begin with the name we want? 
                if (cookie.substring(0, name.length + 1) == (name + '=')) { 
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); 
                    break; 
                } 
            } 
        } 
        return cookieValue; 
    } 
    function sameOrigin(url) { 
        // url could be relative or scheme relative or absolute 
        var host = document.location.host; // host + port 
        var protocol = document.location.protocol; 
        var sr_origin = '//' + host; 
        var origin = protocol + sr_origin; 
        // Allow absolute or scheme relative URLs to same origin 
        return (url == origin || url.slice(0, origin.length + 1) == origin + '/') || 
            (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') || 
            // or any other URL that isn't scheme relative or absolute i.e relative. 
            !(/^(\/\/|http:|https:).*/.test(url)); 
    } 
    function safeMethod(method) { 
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method)); 
    } 
 
    if (!safeMethod(settings.type) && sameOrigin(settings.url)) { 
        xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken')); 
    } 
}); 

来自  http://blog.youkuaiyun.com/shangliuyan/article/details/7406876

 

方法二：
    在ajax发送数据的时候带上csrf_token

首先从cookie中取得csrf_token

      function getCookie(name) {
          var cookieValue = null;
          if (document.cookie && document.cookie != '') {
               var cookies = document.cookie.split(';');
               for (var i = 0; i < cookies.length; i++) {
                     var cookie = jQuery.trim(cookies[i]);
                     // Does this cookie string begin with the name we want?
                     if (cookie.substring(0, name.length + 1) == (name + '=')) {
                          cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                          break;
                         }
                    }
               }
           return cookieValue;
          }

然后将它绑到ajax方法里

      var csrftoken = getCookie('csrftoken');
      function csrfSafeMethod(method) {
       // these HTTP methods do not require CSRF protection
           return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
          }
      $.ajaxSetup({
           beforeSend: function(xhr, settings) {
                if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
                     xhr.setRequestHeader("X-CSRFToken", csrftoken);
                }
           }
          });

 以后$.post的时候，就会自动带上csrt_token了

     

方法三：

from django.views.decorators.csrf import csrf_exempt

然后在函数前加上@csrt_exempt，那么就可以免除csrf验证