Coldfusion 创建会话变量

我对ColdFusion（从昨天开始）很陌生。我试图在

checklogin.cfm

中创建一个会话变量，它等于表单中输入的用户名。所以我可以在结果页面上显示用户名。有可能吗？ 还是有更好的方法

应用程序.cfm

<cfset this.name = "Name of your application">
<cfset this.sessionManagement = true>

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
  <cfset session.userName = form.userName/>
  <cflocation url="home.cfm" ADDTOKEN="Yes">
  <!--- If username doesn't equal user1 and/or password doesn't 
    equal password1, take user back to login page. ---> 
<cfelse>
  <cflocation url="login.cfm" ADDTOKEN="Yes">  
</cfif>

<cfoutput>
    <br>
     <b><font size="6">Enter the numbers you want to add:</font></b>
</cfoutput>

<!--- Add numbers form ---> 

<cfform action="result.cfm" method="post"> 
    <!--- Get numbers from user ---> 
    <p> 
        Enter first number: 
        <cfinput type="Text" name="number1" required="Yes" size="20"
          maxlength="100" message="You must enter a number.">
        <br> 

        Enter second number: 
        <cfinput type="Text" name="number2" required="Yes" size="20"
          maxlength="100" message="You must enter a second number.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
</cfform> 

<cfform action="check_login.cfm" method="post"> 
    <!--- Get login info from user ---> 
    <p> 
        UserName: 
        <cfinput type="Text" name="userName" required="Yes" size="20" maxlength="25" 
          message="Username is required and must be less than 25 characters.">
        <br> 

        Password: 
        <cfinput type="password" name="password" required="Yes" size="20" maxlength="20" 
          message="Password is required and must be less than 20 characters.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
   </cfform> 

<cfset result = form.number1 + form.number2 >
<cfoutput>
     <b><font size="6">Hi #session.userName#! </font></b><br> 
     <br>
    <!-- Display result to user. -->
    <font size="5">Your result is: #result#</font>
</cfoutput>

检查\u login.cfm

<cfset this.name = "Name of your application">
<cfset this.sessionManagement = true>

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
  <cfset session.userName = form.userName/>
  <cflocation url="home.cfm" ADDTOKEN="Yes">
  <!--- If username doesn't equal user1 and/or password doesn't 
    equal password1, take user back to login page. ---> 
<cfelse>
  <cflocation url="login.cfm" ADDTOKEN="Yes">  
</cfif>

<cfoutput>
    <br>
     <b><font size="6">Enter the numbers you want to add:</font></b>
</cfoutput>

<!--- Add numbers form ---> 

<cfform action="result.cfm" method="post"> 
    <!--- Get numbers from user ---> 
    <p> 
        Enter first number: 
        <cfinput type="Text" name="number1" required="Yes" size="20"
          maxlength="100" message="You must enter a number.">
        <br> 

        Enter second number: 
        <cfinput type="Text" name="number2" required="Yes" size="20"
          maxlength="100" message="You must enter a second number.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
</cfform> 

<cfform action="check_login.cfm" method="post"> 
    <!--- Get login info from user ---> 
    <p> 
        UserName: 
        <cfinput type="Text" name="userName" required="Yes" size="20" maxlength="25" 
          message="Username is required and must be less than 25 characters.">
        <br> 

        Password: 
        <cfinput type="password" name="password" required="Yes" size="20" maxlength="20" 
          message="Password is required and must be less than 20 characters.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
   </cfform> 

<cfset result = form.number1 + form.number2 >
<cfoutput>
     <b><font size="6">Hi #session.userName#! </font></b><br> 
     <br>
    <!-- Display result to user. -->
    <font size="5">Your result is: #result#</font>
</cfoutput>

home.cfm

<cfset this.name = "Name of your application">
<cfset this.sessionManagement = true>

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
  <cfset session.userName = form.userName/>
  <cflocation url="home.cfm" ADDTOKEN="Yes">
  <!--- If username doesn't equal user1 and/or password doesn't 
    equal password1, take user back to login page. ---> 
<cfelse>
  <cflocation url="login.cfm" ADDTOKEN="Yes">  
</cfif>

<cfoutput>
    <br>
     <b><font size="6">Enter the numbers you want to add:</font></b>
</cfoutput>

<!--- Add numbers form ---> 

<cfform action="result.cfm" method="post"> 
    <!--- Get numbers from user ---> 
    <p> 
        Enter first number: 
        <cfinput type="Text" name="number1" required="Yes" size="20"
          maxlength="100" message="You must enter a number.">
        <br> 

        Enter second number: 
        <cfinput type="Text" name="number2" required="Yes" size="20"
          maxlength="100" message="You must enter a second number.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
</cfform> 

<cfform action="check_login.cfm" method="post"> 
    <!--- Get login info from user ---> 
    <p> 
        UserName: 
        <cfinput type="Text" name="userName" required="Yes" size="20" maxlength="25" 
          message="Username is required and must be less than 25 characters.">
        <br> 

        Password: 
        <cfinput type="password" name="password" required="Yes" size="20" maxlength="20" 
          message="Password is required and must be less than 20 characters.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
   </cfform> 

<cfset result = form.number1 + form.number2 >
<cfoutput>
     <b><font size="6">Hi #session.userName#! </font></b><br> 
     <br>
    <!-- Display result to user. -->
    <font size="5">Your result is: #result#</font>
</cfoutput>

输入要添加的数字：

输入第一个数字：


输入第二个数字：

login.cfm

<cfset this.name = "Name of your application">
<cfset this.sessionManagement = true>

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
  <cfset session.userName = form.userName/>
  <cflocation url="home.cfm" ADDTOKEN="Yes">
  <!--- If username doesn't equal user1 and/or password doesn't 
    equal password1, take user back to login page. ---> 
<cfelse>
  <cflocation url="login.cfm" ADDTOKEN="Yes">  
</cfif>

<cfoutput>
    <br>
     <b><font size="6">Enter the numbers you want to add:</font></b>
</cfoutput>

<!--- Add numbers form ---> 

<cfform action="result.cfm" method="post"> 
    <!--- Get numbers from user ---> 
    <p> 
        Enter first number: 
        <cfinput type="Text" name="number1" required="Yes" size="20"
          maxlength="100" message="You must enter a number.">
        <br> 

        Enter second number: 
        <cfinput type="Text" name="number2" required="Yes" size="20"
          maxlength="100" message="You must enter a second number.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
</cfform> 

<cfform action="check_login.cfm" method="post"> 
    <!--- Get login info from user ---> 
    <p> 
        UserName: 
        <cfinput type="Text" name="userName" required="Yes" size="20" maxlength="25" 
          message="Username is required and must be less than 25 characters.">
        <br> 

        Password: 
        <cfinput type="password" name="password" required="Yes" size="20" maxlength="20" 
          message="Password is required and must be less than 20 characters.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
   </cfform> 

<cfset result = form.number1 + form.number2 >
<cfoutput>
     <b><font size="6">Hi #session.userName#! </font></b><br> 
     <br>
    <!-- Display result to user. -->
    <font size="5">Your result is: #result#</font>
</cfoutput>

用户名：


密码：

结果.cfm

<cfset this.name = "Name of your application">
<cfset this.sessionManagement = true>

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
  <cfset session.userName = form.userName/>
  <cflocation url="home.cfm" ADDTOKEN="Yes">
  <!--- If username doesn't equal user1 and/or password doesn't 
    equal password1, take user back to login page. ---> 
<cfelse>
  <cflocation url="login.cfm" ADDTOKEN="Yes">  
</cfif>

<cfoutput>
    <br>
     <b><font size="6">Enter the numbers you want to add:</font></b>
</cfoutput>

<!--- Add numbers form ---> 

<cfform action="result.cfm" method="post"> 
    <!--- Get numbers from user ---> 
    <p> 
        Enter first number: 
        <cfinput type="Text" name="number1" required="Yes" size="20"
          maxlength="100" message="You must enter a number.">
        <br> 

        Enter second number: 
        <cfinput type="Text" name="number2" required="Yes" size="20"
          maxlength="100" message="You must enter a second number.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
</cfform> 

<cfform action="check_login.cfm" method="post"> 
    <!--- Get login info from user ---> 
    <p> 
        UserName: 
        <cfinput type="Text" name="userName" required="Yes" size="20" maxlength="25" 
          message="Username is required and must be less than 25 characters.">
        <br> 

        Password: 
        <cfinput type="password" name="password" required="Yes" size="20" maxlength="20" 
          message="Password is required and must be less than 20 characters.">
        <br>
    </p> 

    <!--- submit button ---> 
    <cfinput type="Submit" name="submitForm" value="Submit"> 
   </cfform> 

<cfset result = form.number1 + form.number2 >
<cfoutput>
     <b><font size="6">Hi #session.userName#! </font></b><br> 
     <br>
    <!-- Display result to user. -->
    <font size="5">Your result is: #result#</font>
</cfoutput>

嗨#会话。用户名#



你的结果是：#结果#

---

问题在于结果页面，其中指出会话中

元素用户名未定义

指向行

Hi#SESSION.USERNAME#

要修复上述错误，需要将会话变量的设置移到check\u login.cfm文件中的

标记上方

由此：

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
    <cflocation url="home.cfm">
<!--- If username doesn't equal user1 and/or password doesn't equal password1, take user back to login page. ---> 
<cfelse>
    <cflocation url="login.cfm">  
</cfif>
<cfset session.userName = form.userName/>

对这样的事情：

<!--- If username equals user1 and password equals password1, take user to home page. ---> 
<cfif form.userName eq "user1" AND form.password eq "password1">
    <cfset session.userName = form.userName/>
    <cflocation url="home.cfm">
<!--- If username doesn't equal user1 and/or password doesn't equal password1, take user back to login page. ---> 
<cfelse>
    <cflocation url="login.cfm">  
</cfif>

这是因为当ColdFusion遇到

标记时，它将停止处理文件的其余部分。当处理该标记时，它将立即向用户发送重定向。因此，设置会话变量的代码从未运行过

更新了在会话变量设置周围使用CFLOCK的示例

@user8968494由于您是CF新手，我觉得有必要建议您避免使用CF元素，如cfform和cfinput，否则您的代码将永远依赖于这些元素的正常工作，并且您的自定义能力有限。最好使用纯html，然后根据需要编写自己的功能。我会回应Redtopia，我还想补充一点，任何时候传递用户变量时，都应该对它们进行一些良好的验证。我还建议您查看cfscript语法，而不是标记语法。特别是如果你熟悉Javascript，你为什么要从你的问题中删除细节？我们需要这些来帮助你。如果您在最初的帖子中更改了代码，这没关系，但您应该将这些新的细节添加到原始问题中，以便保留这些注释和答案的上下文。@Miguel-F我将这些内容添加了回去。这个问题有点需要这些细节。我像你说的那样移动了它，但它在结果页面上仍然给出相同的错误。然后是其他一些错误。基于您迄今为止提供的解决问题的方法。用最新的代码和错误消息更新您的问题。@user8968494您的cookie可能未设置为通过会话@在阅读了那篇文章之后，Shawn我在cflocation中添加了ADDTOKEN=“Yes”。错误没有改变。它说不要在与cflocation相同的模板中设置会话变量。那么我应该在哪里设置它呢？您不需要（也不应该使用）

addtoken=“yes”

属性。这将在URL中公开您的Cookie。这很糟糕。尝试在会话变量的设置周围添加一个

cflock

。我用一个例子更新了我的答案。我在同一页上与

cflocation

一起使用它，它对我很有用。