Question

发送一个帖子请求和一个PHP文件，将其写入一个文件，用于测试我刚使用过的发送消息的“虚拟文本”

//FILE - SSE.html
// xmlhttprequest post

//function.................................................

function loadXMLDoc(){    
var xmlhttp;    
if (window.XMLHttpRequest){       
xmlhttp=new XMLHttpRequest();      
console.log("request made");  
}     
else      
{     
 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");      
}   
xmlhttp.onreadystatechange=function(){   
if (xmlhttp.readyState==4 && xmlhttp.status==200){      

console.log(xmlhttp.responseText);
}   
 }   

xmlhttp.open("POST","writeToFile.php",true);    
xmlhttp.setRequestHeader("Content-type","text/plain;charset=UTF-8");   
xmlhttp.send("dummy text");   
}

// html body.................................................
<form>
<textarea name="q" onKeyUp="loadXMLDoc()" id="ta1" cols=40 rows=10></textarea>
</form>
<textarea id="ta2" cols=40 rows=10></textarea>

//PHP file.......

<?php 


$clientData=$_POST["q"];  

$File = "WrittenByPHP.txt";   
$Handle = fopen($File, w');    
$Data = $clientData;   
fwrite($Handle, $Data);   
fclose($Handle);   ?>

结果在控制台............一些垃圾   值..............................

请求SSE.html：46
（！）注意：未定义的索引：q in   C：\ wampnew \ www \ RD \ writeToFile.php在线 4 调用堆栈   #TimeMemoryFunctionLocation 10.0003252112 {main}（）.. \ writeToFile.php ： 0


----------------------------------------------- -----------------------------为什么上面的垃圾代码产生了？提前谢谢。

Answer 1

检查是否isset()并退出脚本：

<?php
    if(isset($_POST["q"])){

        $clientData = $_POST["q"]; 
        $File = "WrittenByPHP.txt";
        $Handle = fopen($File, 'w');    
        $Data = $clientData;   
        fwrite($Handle, $Data);   
        fclose($Handle);
        die;
    }
?>

您应该在帖子中发送q参数。

var params = "q="+document.getElementById('ta1').value;
xmlhttp.open("POST","ajax.php",true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.send(params);

形式：

<form>
   <textarea name="q" onKeyUp="loadXMLDoc()" id="ta1" cols=40 rows=10></textarea>
</form>

这将在每个onKeyUp上提交，您应该将其更改为onblur

xmlHttpRequest post方法给出垃圾值

1 个答案: