我可以在JMeter 4/5中加载Velocity as language to JSR223，
我在JSR223语言列表中添加了velocity-engine-core-2.0.jar和velocity-engine-scripting-2.0.jar，其中包括速度，
（也尝试使用最新的速度2.1 versions）
给定的任何文本都会被忽略的问题，即使我输入了无效的语法也不会引发任何异常（如在其他语言中一样），或者使用vars，log，... < / p>
似乎脚本未执行，如何执行Velocity JSR223脚本？我需要添加配置或罐子吗？ 还是对速度有一些JMeter / Java限制？
例如尝试
log.info("Hello Velocity");
vars.put("a","Hello Velocity");
System.out.println("Hello Velocity");
NoExists.out.println("Hello Velocity");
似乎我有velocity runtime dependencies
slf4j-api 1.7.25是是是您还需要在运行时绑定slf4j
commons-lang 3.5是是是
库包含slf4j-api-1.7.25.jar commons-lang3-3.8.1.jar，并将slf4j-simple-1.7.25.jar添加到默认的JMeter库
日志：
2019-06-05 11:48:05,739 DEBUG o.a.j.c.GenericController: Calling next on: class org.apache.jmeter.control.GenericController
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Preparing class org.apache.jmeter.protocol.java.sampler.JSR223Sampler
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Setting scriptLanguage=velocity
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Setting parameters=
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Setting filename=
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Setting cacheKey=false
2019-06-05 11:48:05,739 DEBUG o.a.j.t.TestBeanHelper: Setting script=log.info("Hello Velocity");
vars.put("a","Hello Velocity");
System.out.println("Hello Velocity");
NoExists.out.println("Hello Velocity");
2019-06-05 11:48:05,739 DEBUG o.a.velocity: Initializing Velocity, Calling init()...
2019-06-05 11:48:05,739 TRACE o.a.velocity: *****************************
2019-06-05 11:48:05,739 DEBUG o.a.velocity: Starting Apache Velocity v2.0
2019-06-05 11:48:05,739 TRACE o.a.velocity: RuntimeInstance initializing.
2019-06-05 11:48:05,741 DEBUG o.a.velocity: Default Properties resource: org/apache/velocity/runtime/defaults/velocity.properties
2019-06-05 11:48:05,741 TRACE o.a.v.loader: ResourceManager initializing: class org.apache.velocity.runtime.resource.ResourceManagerImpl
2019-06-05 11:48:05,741 DEBUG o.a.velocity: ResourceLoader instantiated: org.apache.velocity.runtime.resource.loader.FileResourceLoader
2019-06-05 11:48:05,741 TRACE o.a.v.l.file: FileResourceLoader: initialization starting.
2019-06-05 11:48:05,741 DEBUG o.a.v.l.file: FileResourceLoader: adding path '.'
2019-06-05 11:48:05,741 TRACE o.a.v.l.file: FileResourceLoader: initialization complete.
2019-06-05 11:48:05,741 DEBUG o.a.velocity: initialized (class org.apache.velocity.runtime.resource.ResourceCacheImpl) with class java.util.Collections$SynchronizedMap cache map.
2019-06-05 11:48:05,741 TRACE o.a.v.loader: Default ResourceManager initialization complete.
2019-06-05 11:48:05,741 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Stop
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Define
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Break
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Evaluate
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Macro
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Parse
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Include
2019-06-05 11:48:05,742 DEBUG o.a.velocity: Loaded System Directive: org.apache.velocity.runtime.directive.Foreach
2019-06-05 11:48:05,743 DEBUG o.a.v.parser: Created '20' parsers.
2019-06-05 11:48:05,743 TRACE o.a.v.macro: initialization starting.
2019-06-05 11:48:05,743 DEBUG o.a.v.macro: "velocimacro.library" is not set. Trying default library: VM_global_library.vm
2019-06-05 11:48:05,743 DEBUG o.a.v.macro: Default library not found.
2019-06-05 11:48:05,743 DEBUG o.a.v.macro: allowInline = true: VMs can be defined inline in templates
2019-06-05 11:48:05,743 DEBUG o.a.v.macro: allowInlineToOverride = false: VMs defined inline may NOT replace previous VM definitions
2019-06-05 11:48:05,743 DEBUG o.a.v.macro: allowInlineLocal = false: VMs defined inline will be global in scope if allowed.
2019-06-05 11:48:05,744 DEBUG o.a.v.macro: autoload off: VM system will not automatically reload global library macros
2019-06-05 11:48:05,744 TRACE o.a.v.macro: Velocimacro: initialization complete.
2019-06-05 11:48:05,744 TRACE o.a.velocity: RuntimeInstance successfully initialized.
2019-06-05 11:48:05,744 DEBUG o.a.j.c.GenericController: Calling next on: class org.apache.jmeter.control.GenericController
编辑
无效的速度上下文似乎会引发错误，
例如调用不存在速度变量$a
2019-06-05 12:39:28,804 DEBUG o.a.v.rendering: Null reference [template '<unknown>', line 2, column 7]: $a cannot be resolved.
但是问题仍然存在，JMeter无法在其上下文中使用速度变量
编辑
解决方法是添加速度LogTool（velocity-tools-generic-3.0.jar）并使用$log
$log.debug( "Hello Velocity");
但是不能将JMeter变量用作
$log.debug( "Hello " + vars.get("a"));
答案 0 :(得分：1)
我发现了这个问题，在Velocity中，您需要在上下文变量名称之前添加$，
因此，使用vars代替$vars：
$log.debug( "Hello " + $vars.get("a"));