Java 如何禁用速度日志
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How to disable velocity logs
提问by luiso1979
I've been trying to disable Velocity logs, and the only way I've found so far with positive results is to set:
我一直在尝试禁用 Velocity 日志，到目前为止我发现的唯一具有积极结果的方法是设置：
runtime.log.logsystem.class=org.apache.velocity.runtime.log.NullLogSystem
but inside the velocity.properties that resides inside the velocity.jar.
但在位于velocity.jar 内的velocity.properties 内。
I'm using velocity in a Web Application (tomcat) context. Is there any way to disable the velocity (by setting the previous property or whatever) BUT without modifying the JAR??
我在 Web 应用程序 (tomcat) 上下文中使用速度。有没有办法禁用速度（通过设置以前的属性或其他）但不修改 JAR？
Cannot modify any CODE
不能修改任何代码
Thanks in advance
提前致谢
回答by harsh
This is how you can configure desired logging in velocity:
这是您可以配置所需登录的方法velocity：
//java configuration
VelocityEngine ve = new VelocityEngine();
ve.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS, "org.apache.velocity.runtime.log.Log4JLogChute" );
ve.setProperty("runtime.log.logsystem.log4j.logger","velocity");
//log4j properties
log4j.category.velocity=WARN
IMHO INFOis fine with velocityas on startup you will notice some useful velocity engine configuration details, but during templating nothing specific comes out from INFOlevel.
恕我直言，INFO是用细velocity如在启动时，你会发现一些有用的极速引擎配置的详细信息，但在没有任何模板化从具体出来INFO的水平。
回答by Giuseppe Iacobucci
You can implement the method VelocityEngine engine() of VelocityBuilder interface and then specify a file you want use as follow:
您可以实现 VelocityBuilder 接口的 VelocityEngine engine() 方法，然后指定您要使用的文件，如下所示：
public VelocityEngine engine() {
if(engine == null) {
engine = new VelocityEngine();
Properties properties = new Properties();
InputStream in = null;
try {
//here is where you specify the filename "/WEB-INF/velocity.properties"
in = webApplicationContext.getServletContext().getResourceAsStream("/WEB-INF/velocity.properties");
properties.load(in);
engine.init(properties);
} catch (IOException e) {
e.printStackTrace();
logger.error("Error loading velocity engine properties");
throw new ProgramException("Cannot load velocity engine properties");
}
IOUtils.closeQuietly(in);
}
return engine;
}
And after in your velocity.properties file:
然后在您的velocity.properties 文件中：
resource.loader = framework
framework.resource.loader.description = Framework Templates Resource Loader
framework.resource.loader.class = applica.framework.library.velocity.WEBINFResourceLoader
webapp.resource.loader.class = org.apache.velocity.tools.view.servlet.WebappLoader
webapp.resource.loader.path =
runtime.log.logsystem.class=org.apache.velocity.runtime.log.NullLogSystem
file.resource.loader.description = Velocity File Resource Loader
file.resource.loader.class = org.apache.velocity.runtime.resource.loader.FileResourceLoader
file.resource.loader.path =
class.resource.loader.description = Velocity Classpath Resource Loader
class.resource.loader.class = org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
回答by dedek
In general: just add following line to your velocity.properties:
一般来说：只需将以下行添加到您的velocity.properties：
runtime.log.logsystem.class=org.apache.velocity.runtime.log.NullLogChute
To your question:
It depends on how the velocity engine is loaded. Is it possible to give it a custom velocity.propertiesfile?
For example Solr's VelocityResponseWriterhas such property called v.properties(or init.properties.filein current versions).
Look, if the method org.apache.velocity.app.VelocityEngine.init(Properties)is called somewhere in the code...
对于您的问题：这取决于速度引擎的加载方式。可以给它一个自定义velocity.properties文件吗？
例如 SolrVelocityResponseWriter有这样的属性调用v.properties（或init.properties.file在当前版本中）。
看，如果该方法org.apache.velocity.app.VelocityEngine.init(Properties)在代码中的某处被调用......
回答by Oleg Mikhailov
VelocityEngine velocityEngine = new VelocityEngine();
velocityEngine.setProperty("runtime.log.logsystem.class", NullLogChute.class.getName());
velocityEngine.init();
