如何在Coldfusion8中使用javaloader设置java库？

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问题描述

我想让javaLoader在Coldfusion8应用程序中运行，我需要一些帮助让我跨越终点线。

这是我有的far：

内部 application.cfc ：

  ... 
 THIS.mappings [/ javaloader] = GetDirectoryFromPath（GetCurrentTemplatePath（））& tools / javaloader; 
 ... 
 
< cffunction name =onApplicationStartreturnType =booleanoutput =falsehint =application initalizer> 
< cfscript> 
 Application.str = structNew（）; 
 Application.str.myJavaLoaderKey =someUUID_javaloader; 
 Application.str.jarPaths = arrayNew（1）; 
< / cfscript> 
< cfif（NOT structKeyExists（server，Application.str.myJavaLoaderKey））> 
<！---将类文件的路径添加到jarPath Array ---> 
< cfset Application.str.jarPaths [1] = expandPath（/ classes / BCrypt.class）> 
<！---这将映射到：... htdocs / classes / BCrypt.class ---> 
 
< cfif（NOT structKeyExists（server，Application.str.myJavaLoaderKey））> 
< cflock name =＃Hash（Application.str.myJavaLoaderKey）＃type =exclusivetimeout =10> 
< cfset server [Application.str.myJavaLoaderKey] = createObject（component，javaloader.JavaLoader）> 
<！---试试.init（Application.str.jarPaths）这里，但没有做任何事情---> 
< / cflock> 
< / cfif> 
< / cfif> 
< cfreturn true /> 
< / cffunction>

这是根据和。

在我的 handler.cfc javaloader和BCrypt类是这样的：

 < cfsript& 
 pass =some_password; 
<！--- this is accessible ---> 
 cryptonite = server [Application.str.myJavaLoaderKey]; 
<！---现在试图调用init（）与相应的路径创建一个实例---> 
<！--- BREAKS HERE ---> 
 bCrypt = cryptonite.init（Application.str.jarPaths [1]）; 
 
 hashed = bCrypt.hashpw（pass，bcrypt.gensalt（））; 
< / cfscript>

我可以转储cryptonite变量allright，但是当我尝试创建BCrypt的实例时，脚本失败。

问题：

我很高兴我做得很远，这几个小时现在没有线索我做错了。

感谢您的帮助！

解决方案

确定。有几个错误。

要设置具有Coldfusion8和BCrypt的Javaloader或您选择的Java类，请执行以下操作：

1）将任何Java类（.java文件，而不是.class文件）放在webroot / htdocs（Apache）的文件夹中。我的BCrypt路径如下：

  htdocs / classes / jBCrypt / 
  / pre> 
 
  2）对javaloader执行相同操作。我的路径如下所示：
  htdocs / tools / javaloader / 
  
 3）在 Application.cfc 中：
 <！--- create mapping to javaloder ---> 
< cfscript> 
 THIS.mappings [/ javaloader] = GetDirectoryFromPath（GetCurrentTemplatePath（））& tools / javaloader; 
< / cfscript> 
 
<！--- Application start ---> 
< cffunction name =onApplicationStartreturnType =booleanoutput =falsehint => 
< cfscript> 
<！---在应用程序范围内存储UUID和emptry路径数组---> 
 Application.str = structNew（）; 
 Application.str.myJavaLoaderKey =your_uuid_javaloader; 
 Application.str.jarPaths = arrayNew（1）; 
< / cfscript> 
<！---检查是否存在---> 
< cfif（NOT structKeyExists（server，Application.str.myJavaLoaderKey））> 
 
<！---把所有的.java文件路径放在这里，这是JBCrypt ---> 
< cfset Application.str.jarPaths [1] = expandPath（/ classes / jBCrypt-0.3）> 
< cfif（NOT structKeyExists（server，Application.str.myJavaLoaderKey））> 
 
< cflock name =＃Hash（Application.str.myJavaLoaderKey）＃type =exclusivetimeout =10> 
<！--- create javaloader object and init with all submitted paths ---> 
< cfset server [Application.str.myJavaLoaderKey] = createObject（component，javaloader.JavaLoader）init（sourceDirectories = Application.str.jarPaths）> 
< / cflock> 
< / cfif> 
< / cfif> 
< / cffunction> 
  
安装程序应该位于。这应该设置所有.java类，你现在可以从其他地方引用如下：
 < cfscript& 
 var pass =a_password; 
 javaLoader = server [Application.str.myJavaLoaderKey]; 
 //创建javaloader-BCrypt的实例
 bcrypt = javaLoader.create（BCrypt）。init（）; 
 //现在你可以从bcrypt调用方法，如：
 hashed = bcrypt.hashpw（pass，bcrypt.gensalt（））; 
< / cfscript> 
  
想通读。原来，你必须参考 .java 文件，而不是 .class 文件，这是我原来做的。
 
 
 以下链接也可能有所帮助：
 
  
 
  
 
  
 
I'm trying to get javaLoader to run in a Coldfusion8 application and I need some help to get me across the finish line.
This is what I have so far:
Inside application.cfc:
...
THIS.mappings["/javaloader"] = GetDirectoryFromPath( GetCurrentTemplatePath() ) & "tools/javaloader";
...

<cffunction name="onApplicationStart" returnType="boolean" output="false" hint="application initalizer">
    <cfscript>
    Application.str = structNew();
    Application.str.myJavaLoaderKey = "someUUID_javaloader";
    Application.str.jarPaths = arrayNew(1);
    </cfscript>
    <cfif ( NOT structKeyExists(server, Application.str.myJavaLoaderKey) )>
        <!--- add path to class files to jarPath Array --->
        <cfset Application.str.jarPaths[1] = expandPath("/classes/BCrypt.class")>
        <!--- this will map out to: ...htdocs/classes/BCrypt.class --->

        <cfif ( NOT structKeyExists(server, Application.str.myJavaLoaderKey) )>
            <cflock name="#Hash(Application.str.myJavaLoaderKey)#" type="exclusive" timeout="10">
                <cfset server[Application.str.myJavaLoaderKey] = createObject("component", "javaloader.JavaLoader")>
                <!--- tried .init(Application.str.jarPaths) here, but didn't do anything --->
            </cflock>
        </cfif>
    </cfif>
    <cfreturn true />
</cffunction>
This was done following instructions from here and here.
In my handler.cfc, I'm trying to access javaloader and the BCrypt class like so:
<cfsript>
    pass = "some_password";
    <!--- this is accessible --->
    cryptonite = server[Application.str.myJavaLoaderKey];
    <!--- now trying to call init() with respective path to create an instance --->
    <!--- BREAKS HERE --->
    bCrypt = cryptonite.init(Application.str.jarPaths[1]);

    hashed = bCrypt.hashpw(pass, bcrypt.gensalt());
</cfscript>
I can dump the cryptonite variable allright, but when I try to create the instance of BCrypt, the script fails.
Question:
I'm happy I made it this far, but I've been sitting on this for a few hours now with no clue what I'm doing wrong. Hopefully someone with more insight can point me in a direction?
Thanks for help!
 解决方案 
Ok. There were a couple of mistakes.
To setup Javaloader with Coldfusion8 and BCrypt or a Java Class of your choice, do the following: 
1) Put whatever Java Classes (the .java file, not the .class file) in a folder in your webroot/htdocs(Apache). My path for BCrypt looks like this:
  htdocs/classes/jBCrypt/
2) Do the same for javaloader. My path looks like this:
  htdocs/tools/javaloader/
3) In Application.cfc:
<!--- create mapping to javaloder --->
<cfscript>
    THIS.mappings["/javaloader"] = GetDirectoryFromPath( GetCurrentTemplatePath() ) & "tools/javaloader";
</cfscript>

<!--- Application start --->
<cffunction name="onApplicationStart" returnType="boolean" output="false" hint="">
    <cfscript>
        <!--- store a UUID and emptry path array in Application scope --->
        Application.str = structNew();
        Application.str.myJavaLoaderKey = "your_uuid_javaloader";
        Application.str.jarPaths = arrayNew(1);
    </cfscript>
     <!--- check if exists --->
    <cfif ( NOT structKeyExists(server, Application.str.myJavaLoaderKey) )>

         <!--- put all paths to your .java files here, this is for JBCrypt --->
         <cfset Application.str.jarPaths[1] = expandPath("/classes/jBCrypt-0.3")>
         <cfif ( NOT structKeyExists(server, Application.str.myJavaLoaderKey) )>

            <cflock name="#Hash(Application.str.myJavaLoaderKey)#" type="exclusive" timeout="10">
                <!--- create javaloader object and init with all submitted paths --->
                <cfset server[Application.str.myJavaLoaderKey] = createObject("component", "javaloader.JavaLoader").init(sourceDirectories=Application.str.jarPaths )>
            </cflock>
        </cfif>
    </cfif>
</cffunction>
The setup should be in the application scope as per here. This should set up all .java classes which you can now reference from elsewhere like so:
<cfscript>
    var pass = "a_password";
    javaLoader = server[Application.str.myJavaLoaderKey];
    // create an instance of javaloader-BCrypt
    bcrypt = javaLoader.create("BCrypt").init();
    // now you can call methods from bcrypt like so:
    hashed = bcrypt.hashpw(pass, bcrypt.gensalt());
</cfscript>
Figured it out reading through here. Turns out you have to refer to the .java file and not the .class file, which I initally did.
The following links may also be helpful:
http://blog.mxunit.org/2011/02/hashing-passwords-with-bcrypt-in.html
http://www.compoundtheory.com/javaloader/docs/
http://www.aliaspooryorik.com/blog/index.cfm/e/posts.details/post/using-bcrypt-in-coldfusion-10-370  
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