如何设置 Velocity 在 Windows 上的文件系统中查找模板？

发布于 2024-08-16 05:07:42 字数 468 浏览 2 评论 0原文

我有一个非常简单的 Velocity 应用程序，可以在 Linux 和 MacOS 上运行，但在 Windows 上失败。问题在于资源位置。我只是给它“/”以允许它识别文件系统路径，但在 Windows 上无法识别“c:/.....”路径名。我怀疑有一个更简单的解决方案，但是什么呢？

 velocityEngine = new VelocityEngine();
    // we want to use absolute paths.
    velocityEngine.setProperty("file.resource.loader.path", "/");
    try {
      velocityEngine.init();
    } catch (Exception e) {
      throw new MojoExecutionException("Unable to initialize velocity", e);
    }

原文

I have a very simple Velocity application that works on Linux and MacOS and fails on Windows. The problem is with the resource locations. I just give it "/" to allow it to recognize file system paths, but on Windows that fails to work for "c:/....." pathnames. I suspect that there is a simpler solution to this, but what?

 velocityEngine = new VelocityEngine();
    // we want to use absolute paths.
    velocityEngine.setProperty("file.resource.loader.path", "/");
    try {
      velocityEngine.init();
    } catch (Exception e) {
      throw new MojoExecutionException("Unable to initialize velocity", e);
    }

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旧人九事 2024-08-23 05:07:42

我将速度模板放入类路径中，并使用 Class.getResourceAsStream 读取它们。

它应该是这样的：

// stuff.velocity is a file that lives directly under WEB-INF/classes 
// that contains the velocity template
InputStream inputStream = Class.getResourceAsStream("/stuff.velocity"); 
String template = readTemplateFromFile(inputStream);
VelocityContext context = new VelocityContext( );
// insert any parameters into context now
Writer writer = new StringWriter();
Velocity.evaluate( context, writer, "LOG", template );

现在 writer 应该保存将参数应用到模板的结果。

威尔·格拉斯（Will Glass）下面的评论看起来值得一看。当我使用速度时，它是生成通知电子邮件，通知电子邮件并不多，而且我将工作外包给一个单独的线程，因此当时性能并不是什么大问题。

I put velocity templates in the classpath and read them in with Class.getResourceAsStream.

It should go something like this:

// stuff.velocity is a file that lives directly under WEB-INF/classes 
// that contains the velocity template
InputStream inputStream = Class.getResourceAsStream("/stuff.velocity"); 
String template = readTemplateFromFile(inputStream);
VelocityContext context = new VelocityContext( );
// insert any parameters into context now
Writer writer = new StringWriter();
Velocity.evaluate( context, writer, "LOG", template );

and now writer should hold the result of applying the parameters to the template.

Will Glass' comment below looks like a good thing to check out. When I was using velocity it was to generate notification emails, there were not a lot of them and I had the work farmed out to a separate thread so performance was not a big deal at the time.

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