Javascript Ajax不从C++;CGI脚本
我在处理一些ajax时遇到了问题。问题是它没有在Javascript Ajax不从C++;CGI脚本,javascript,ajax,cgi,Javascript,Ajax,Cgi,我在处理一些ajax时遇到了问题。问题是它没有在responseText字段中返回任何内容。我想在响应文本中返回字符串“OK”,但我甚至不确定是否调用了我的cgi程序。这是我的带有ajax的html文件 <html> <head> <title>Survey</title> <script> var asyncRequest; // XMLHttpRequest object function PostData()
responseText
字段中返回任何内容。我想在响应文本中返回字符串“OK”
,但我甚至不确定是否调用了我的cgi程序。这是我的带有ajax的html文件
<html>
<head>
<title>Survey</title>
<script>
var asyncRequest; // XMLHttpRequest object
function PostData()
{
// Attempt to create the XMLHttpRequest and make the request
try
{
asyncRequest = new XMLHttpRequest();
// Register event handler
asyncRequest.onreadystatechange = StateChange;
// Prepare to post data to URL asynchronously
asyncRequest.open("POST", "cgi-bin/survey_save.cgi", true);
postData = "";
if (document.getElementById("int").checked == true)
postData += "class-int=on&";
if (document.getElementById("net").checked == true)
postData += "class-net=on&";
if (document.getElementById("gui").checked == true)
postData += "class-gui=on&";
if (document.getElementById("oop").checked == true)
postData += "class-oop=on&";
if (document.getElementById("gender-male").checked == true)
postData += "gender=M";
if (document.getElementById("gender-female").checked == true)
postData += "gender=F";
// Set the appropriate HTTP request headers
asyncRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
asyncRequest.setRequestHeader("Content-length", postData.length);
// Make request
asyncRequest.send(postData);
}
catch (exception)
{
alert("Request failed: " + exception.message);
}
}
function StateChange()
{
//alert(asyncRequest.readyState)
//alert(asyncRequest.status+" "+asyncRequest.readyState)
if (asyncRequest.readyState == 4 && asyncRequest.status == 200)
{
alert(asyncRequest.responseText)
if (asyncRequest.responseText == "OK")
{
document.getElementById("message").innerHTML = "Thank you!";
alert(asyncRequest.responseText);
}
else
document.getElementById("message").innerHTML =
asyncRequest.responseText;
}
}
</script>
</head>
<body>
<h3>Please Enter the following Information: </h3>
<form>
<input type ="hidden" name="input-source" value="survey2.html" />
<p>
Name: <input type="text" name="name" size="30" />
</p><p>
Classification:
<select name="class">
<option>Freshman</option>
<option selected="selected">Sophomore</option>
<option>Junior</option>
<option>Senior</option>
</select>
</p><p>
Gender:
<input type="radio" name="gender" value="M" checked="checked" id="gender-male" />Male
<input type="radio" name="gender" value="F" id="gender-female"/>Female
</p><p>
Email address: <input type="text" name="email" size="30" />
</p><p>
Password: <input type="password" name="pword" />
</p><p>
What are your favorite computer classes?
<br />
<label>
<input type="checkbox" name="class-int" id="int" />Internet Development
</label>
<label>
<input type="checkbox" name="class-net" id="net" />Networking
</label>
<label>
<input type="checkbox" name="class-gui" id="gui" />GUI
</label>
<label>
<input type="checkbox" name="class-oop" id="oop" />OOP
</label>
</p><p>
Are you graduating this spring?
<label>
<input type="radio" name="grad" value="Yes" />Yes
</label>
<label>
<input type="radio" name="grad" value="Yes" />No
</label>
</p><p>
Other information we should know? <br />
<textarea name ="comments" rows="3" cols="50"></textarea>
<input type="button" value="Submit Survey" onclick="PostData()"/>
<input type="reset" value="Clear Form" />
</p>
</form>
<div id ="message" />
</body>
</html>
调查
var asyncRequest;//XMLHttpRequest对象
函数PostData()
{
//尝试创建XMLHttpRequest并发出请求
尝试
{
asyncRequest=新的XMLHttpRequest();
//寄存器事件处理程序
asyncRequest.onreadystatechange=StateChange;
//准备将数据异步发布到URL
asyncRequest.open(“POST”,“cgi bin/survey_save.cgi”,true);
postData=“”;
if(document.getElementById(“int”).checked==true)
postData+=“类int=on&”;
if(document.getElementById(“net”).checked==true)
postData+=“类网=开&”;
if(document.getElementById(“gui”).checked==true)
postData+=“类gui=on&”;
if(document.getElementById(“oop”).checked==true)
postData+=“类oop=on&”;
if(document.getElementById(“性别男性”).checked==true)
postData+=“性别=M”;
if(document.getElementById(“性别女性”).checked==true)
postData+=“性别=F”;
//设置适当的HTTP请求头
setRequestHeader(“内容类型”,“应用程序/x-www-form-urlencoded”);
asyncRequest.setRequestHeader(“内容长度”,postData.length);
//请求
asyncRequest.send(postData);
}
捕获(例外)
{
警报(“请求失败:+异常消息”);
}
}
函数StateChange()
{
//警报(asyncRequest.readyState)
//警报(asyncRequest.status+“”+asyncRequest.readyState)
如果(asyncRequest.readyState==4&&asyncRequest.status==200)
{
警报(asyncRequest.responseText)
如果(asyncRequest.responseText==“确定”)
{
document.getElementById(“message”).innerHTML=“谢谢!”;
警报(asyncRequest.responseText);
}
其他的
document.getElementById(“消息”).innerHTML=
asyncRequest.responseText;
}
}
请输入以下信息:
姓名:
分类:
大一新生
大二
年少者
级别高的
性别:
男性的
女的
电邮地址:
密码:
你最喜欢的计算机课程是什么?
互联网发展
网络
桂
哎呀
你今年春天毕业吗?
对
不
其他我们应该知道的信息
<> > CGI程序是用C++编写的,它是我的CGI bin下面的一个目录。这是我的cgi程序的cpp代码
#include<fstream>
#include "cgi.h"
int main()
{
string name = GetValue("name");
string gender = GetValue("gender");
string net = GetValue("class-net");
string webdev = GetValue("class-int");
string gui = GetValue("class-gui");
string oop = GetValue("class-oop");
ofstream fout;
ParseInputParameters();
cout <<"Content-type:text/html\n\n";
fout.open("classes.dat", ios::app);
if(fout.fail())
{
cout << "Cannot open up the data file";
}
else
{
cout <<"OK";
if( net == "on" )
{
fout << "class-net "<<gender<<endl;
cout << "OK";
}
if( webdev == "on" )
{
fout << "class-int "<<gender<<endl;
cout << "OK";
}
if( gui == "on" )
{ fout << "class-gui "<<gender<<endl;
cout << "OK";
}
if( oop == "on" )
{
fout << "class-oop "<<gender<<endl;
cout << "OK";
}
}
fout.close();
return 0;
}
#包括
#包括“cgi.h”
int main()
{
字符串名称=GetValue(“名称”);
字符串性别=GetValue(“性别”);
字符串net=GetValue(“类net”);
字符串webdev=GetValue(“class int”);
字符串gui=GetValue(“类gui”);
字符串oop=GetValue(“类oop”);
流式流量计;
ParseInputParameters();
是否可以通过监视访问日志来验证是否调用了CGI脚本。可能还需要检查错误日志。如何以及在何处执行此操作?取决于您的设置。请尝试创建表单并使用同步方法进行POST。此外,还可以创建一个脚本,以便在开发I.e#!/bin/sh之前将CGI脚本管道输出到文件/path/to/script>/tmp/out 2>&1;cat/tmp/out。可以使用文件/tmp/out查看发生了什么。