如何在 Coldfusion8 中使用 javaloader 设置 java 库?

How to setup java libraries with javaloader in Coldfusion8?(如何在 Coldfusion8 中使用 javaloader 设置 java 库?)

问题描述

我正在尝试让 javaLoader 在 Coldfusion8 应用程序中运行，我需要一些帮助才能让我越过终点线.

I'm trying to get javaLoader to run in a Coldfusion8 application and I need some help to get me across the finish line.

这是我目前所拥有的:

在 application.cfc 内:

...
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>

这是按照 这里和这里.

在我的 handler.cfc 中，我正在尝试访问 javaloader 和 BCrypt 类，如下所示:

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>                             

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

I can dump the cryptonite variable allright, but when I try to create the instance of BCrypt, the script fails.

问题:
我很高兴我能做到这一点，但我已经坐了几个小时了，不知道我做错了什么.希望有更多见识的人可以为我指明方向?

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?

感谢您的帮助！

推荐答案

好的.有几个错误.

要使用 Coldfusion8 和 BCrypt 或您选择的 Java 类设置 Javaloader，请执行以下操作:

To setup Javaloader with Coldfusion8 and BCrypt or a Java Class of your choice, do the following:

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 路径如下所示:

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) 对 javaloader 执行相同的操作.我的路径如下所示:

2) Do the same for javaloader. My path looks like this:

  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="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>

根据 这里.这应该设置您现在可以从其他地方引用的所有 .java 类，如下所示:

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>

通过这里了解它.原来你必须参考 .java 文件而不是 .class 文件，我最初是这样做的.

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.

以下链接也可能会有所帮助:
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

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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