discuz发表新帖添加recaptcha验证码

recaptcha验证码可以有效防止发帖机发帖
下面是我测试很久找到的添加recaptcha验证码的方法
添加前,请替换你自己的KEY

第一步,模板添加客户端代码
文件路径 template\default\forum\post.htm
目标定位到 $seccodecheck ,选择添加下面部分代码

<div id="seccheck">
					<!--{if $secqaacheck || $seccodecheck}-->
						<!--{subtemplate forum/seccheck_post}-->
					<!--{/if}-->
                    <!--{if  $_GET[action] == 'newthread'}-->
                        <div class="g-recaptcha" data-sitekey="XXfjCXXXAAAAAMzCuvDbuGoekD3P0nGwTQ3MVlXI"></div>
                        <script src='https://www.recaptcha.net/recaptcha/api.js' async defer></script> 
                    <!--{/if}-->
				</div>

第二步,添加服务端代码
文件路径 source\include\post\post_newthread.php
目标定位到 Access Denied 下面

$secret = 'XXXjCXXXAAAAADPK1p_3R87YEGBkxmYKy4D8sXXX'  ;
$pass = $subject ;
 
if(  $pass && !empty($_POST['g-recaptcha-response'])) 
{ 
 
$verifyResponse = file_get_contents('https://www.recaptcha.net/recaptcha/api/siteverify?secret='.$secret.'&response='.$_POST['g-recaptcha-response']);
        $responseData = json_decode($verifyResponse);
    if (!$responseData->success) { 
 
  showmessage('验证码输入不正确!'  );
}    
        
} elseif( $_G['groupid'] == 10 && $pass && !$_POST["recaptcha_response_field"])  { 
 
showmessage('请输入验证码!');    
 
}