在 JMeter 的 BeanShell Sampler 中将字符串解析为整数 [英] Parsing string to integer in BeanShell Sampler in JMeter

问题描述

我试图在 JMeter 中将字符串解析为整数，但由于以下错误而失败.如果我尝试打印 vars.get 返回的字符串，它们看起来不错.

I'm trying to parse a string into integer in JMeter but failed due to following error. If I try to print the strings returned by vars.get, they look good.

2014/06/28 00:08:52 WARN  - jmeter.assertions.BeanShellAssertion: org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval  Sourced file: inline evaluation of: ``if (ResponseCode != null && ResponseCode.equals ("200") == false ) {  int i = In . . . '' : Typed variable declaration : Method Invocation Integer.parseInt 

以下是我的代码

if (ResponseCode != null && ResponseCode.equals ("200") == false )
{
    int i = Integer.parseInt(vars.get("currentPMCount"));
    int j = Integer.parseInt(vars.get("pmViolationMaxCount"));
    if( i > j ){
        log.warn("PM count on server is greater than max allowed count.");
        }

        log.warn( "The return code is " + ResponseCode); // this goes to the JMeter log file
} 
else 
{
    Failure=true ;
    FailureMessage = "The response data size was not as expected" ;   
}

推荐答案

您的代码看起来不错，但是 currentPMCount 和/或 pmViolationMaxCount 变量可能存在问题.

Your code looks good however it can be a problem with currentPMCount and/or pmViolationMaxCount variables.

如果它们真的很好看并且看起来像整数并且不超过整数的最大值/最小值，您可以尝试以下操作:

If they really look good and look like Integers and don't exceed maximum/minimum values of Integer you can try the following:

1. 确保数字值周围没有空格"字符，因为前导或尾随空格会导致转换失败.也许在变量上调用 trim() 方法会有所帮助:

int i = Integer.parseInt(vars.get("currentPMCount").trim());

如果您将脚本存储到一个文件中，然后在 Beanshell 断言中提供该文件的路径，您将得到有问题的"行号

我最喜欢的:将您的代码包围在 try/catch 块中，如下所示:

If you store your script into a file and then provide path to the file in Beanshell Assertion you'll get "problematic" line number

My favourite: surround your code into try/catch block as follows:

try{
    //your code here
}
catch (Exception ex){
    log.warn("Error in my script", ex);
    throw ex; // elsewise JMeter will "swallow" the above exception
}

通过这种方式，您将获得更多信息丰富的堆栈跟踪，而不是糟糕的Error invoking bsh method消息，它什么也不说.

This way you'll get more informative stacktrace instead of lousy Error invoking bsh methodmessage which tells nothing.

参见如何使用BeanShell:JMeter 最喜欢的内置组件 有关更多提示和技巧的指南.

See How to use BeanShell: JMeter's favorite built-in component guide for more tips and tricks.

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