yii2.0中解决post的400错误

不想用gii的表单自己写表单，但是又遇到了400错误，怎么解决？下面为你解答一下：

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" alt="" />

提交表单报400错误，提示 “您提交的数据无法验证”，原来是csrf验证的问题，因为表单是自己写的，在Yii框架中，为了防止csrf攻击，对post的表单数据封装了CSRF令牌验证。
解决办法关闭csrf验证

方法一、在配资文件中关闭

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BYBot8oHTS2FlZ39hsvF3EwAAAeFizBsH2vvlfAIClNueqYQAAlpUgCABQUYIgAEBFCYIAABUlCAIAVJQgCABQUYIgAEBFCYIAABUlCAIAVJQgCABQUYIgAEBFCYIAABUlCAIAVJQgCABQUYIgAEBF1ZIk+fjx42MPAwCAH+rTp0//B5ViAzzrIfLuAAAAAElFTkSuQmCC" 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使用Yii表单生成页面的时候，如果表单的提交方式为POST，是都会在页面中添加一个隐藏字段，这个隐藏字段就是CSRF令牌验证字段
用户在提交表单的同时，将该字段提交给服务器端，Yii框架会将该有客户端提交过来的隐藏字段和客户端提交过来的Cookie中的YII_CSRF_TOKEN值进行比较。
相同则通过继续执行，不相同则会抛出400异常："The CSRF token could not be verified."。
所以就出现了上面的问题，如果是自己写的表单，可以在视图页面的表单添加隐藏的令牌验证字段
方法二、在表单中增加隐藏的验证字段

 <input name="_csrf" type="hidden" id="_csrf" value="<?= Yii::$app->request->csrfToken ?>">

第三种解决办法是在AJAX中加入_csrf字段：


 var csrfToken = $('meta[name="csrf-token"]').attr("content");
 $.ajax({
   type: 'POST',
   url: url,
   data: {_csrf:csrfToken},
   success: success,
   dataType: dataType
 });

注：本文由王智磊（王大宝儿）整理编写，也参考借鉴了很多大神的笔记，分享代码，分享成功，欢迎各位交流和转载，转载请注明出处（博客园：王大宝儿）http://www.cnblogs.com/wangzhilei/