我正在开发一个Java应用程序，它运行JMeter脚本，然后从报告中获取用于插入到数据库中的信息。JMeter脚本具有模块配置和JSR 233采样器，用于从外部Excel读取数据，以驱动测试和API调用。
如果我从JMeter GUI运行脚本，我没有问题，但如果我从Java代码运行脚本，我在执行用于读取Excel的JSR 233采样器期间遇到错误。
按照我的代码片段调用JMeter和来自Java代码的脚本：

package jmeter;

import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.jmeter.engine.StandardJMeterEngine;
import org.apache.jmeter.report.dashboard.ReportGenerator;
import org.apache.jmeter.reporters.ResultCollector;
import org.apache.jmeter.save.SaveService;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.collections.HashTree;
import org.apache.poi.ss.usermodel.Sheet;

import java.io.File;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Properties;

public class OpenJMX {

    public static String reportPath;

    public static String getReportPath() {
        return reportPath;
    }

    @SuppressWarnings("unused")
    public static String RunJmeter(Properties myPropertiesFile) throws Exception {
        try {
            // Jmeter location
            File jmeterHome = new File(System.getProperty("jmeter.home", myPropertiesFile.getProperty("JMETER_PROPERTIES_PATH")));
            String slash = System.getProperty("file.separator");

            // Ready to start JMX scenario location
            File testPlan = new File(System.getProperty("testPlan.location", myPropertiesFile.getProperty("SCRIPT_PATH") + myPropertiesFile.getProperty("SCRIPT_NAME")));

            if (jmeterHome.exists()) {
                if (testPlan.exists()) {
                    File jmeterProperties = new File(jmeterHome.getPath() + slash + "bin" + slash + "jmeter.properties");
                    if (jmeterProperties.exists()) {
                        // JMeter Engine
                        StandardJMeterEngine jmeter = new StandardJMeterEngine();

                        // Initialize Properties, locale, etc.
                        JMeterUtils.setJMeterHome(jmeterHome.getPath());
                        System.setProperty("javax.net.ssl.keyStore", jmeterHome.getPath() + slash + "bin" + slash +"OracoloCertificate.jks");
                        System.setProperty("javax.net.ssl.keyStorePassword", "changeit");
                        JMeterUtils.loadJMeterProperties(jmeterProperties.getPath());
                        JMeterUtils.findClassesThatExtend(Sheet.class);
                        JMeterUtils.initLocale();

                        // Set directory for HTML report
                        String repDir = jmeterHome.getPath() + slash + "HTMLReport";
                        JMeterUtils.setProperty("jmeter.reportgenerator.exporter.html.property.output_dir", repDir);

                        // Initialize JMeter SaveService
                        SaveService.loadProperties();

                        // Load existing .jmx Test Plan
                        HashTree testPlanTree = SaveService.loadTree(testPlan);

                        String summariserName = JMeterUtils.getPropDefault("summariser.name", "summary");
                        if (summariserName.length() > 0) {
                        }

                        // Store execution results into a .csv file
                        File logFile = setReportPath(myPropertiesFile.getProperty("REPORT_PATH"), jmeterHome);       

                        //Summiraser summer = null;
                        ResultCollector logger = new ResultCollector();
                        ReportGenerator reportGenerator = new ReportGenerator(logFile.getPath(), logger); //creating ReportGenerator for creating HTML report
                        logger.setFilename(logFile.getPath());
                        testPlanTree.add(testPlanTree.getArray()[0], logger);

                        // Run JMeter Test
                        jmeter.configure(testPlanTree);
                        jmeter.run();

                    }
                }
            }
            String executionId = "OK";
            return executionId;
        }
        catch(Exception e) {
            String exc = ExceptionUtils.getStackTrace(e);       
            System.err.println(exc);
            System.exit(-1);
            return null;
        }
    }

    private static File setReportPath(String reportPathProperties, File jmeterHome) {
        try {
            String slash = System.getProperty("file.separator");
            DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH-mm");
            LocalDateTime now = CurrentDateTime.getTimeNow();
            File logFile;
            if(reportPathProperties.isEmpty()) {
                logFile = new File(jmeterHome + slash + "Report " + dtf.format(now) + ".jtl");
            }
            else {
                logFile = new File(reportPathProperties + slash + "Report " + dtf.format(now) + ".jtl");
            }
            reportPath = logFile.getPath();
            return logFile;
        }
        catch(Exception e) {
            String exc = ExceptionUtils.getStackTrace(e);       
            System.err.println(exc);
            System.exit(-1);
            return null;
        }

    }
}

在JSR 233采样器中读取Excel所用的代码如下：

import org.apache.jmeter.threads.JMeterVariables;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFSheet;

String foglio = "${foglio}";
String webService = "${webService}";
String testCase = "${testCase}";
String path = "${pathProjectFiles}" + "/DATA INPUTS.xlsx";

InputStream in = new FileInputStream(new File(path));
Workbook wb = new XSSFWorkbook(in);
in.close();
Sheet sheet = wb.getSheet(foglio);

int nrRows = sheet.getLastRowNum();
int nrColumns = sheet.getRow(0).getLastCellNum();

for (int i = 1; i <= nrRows; i++) {

    if(sheet.getRow(i).getCell(0).getStringCellValue().equals(testCase)) {

        for (int j = 1; j < nrColumns; j++) {
            vars.put(webService + "_" + sheet.getRow(0).getCell(j).getStringCellValue(), sheet.getRow(i).getCell(j).getStringCellValue());
        }

        break;
    }

}

我在Java应用程序执行中遇到的错误是：

javax.script.ScriptException: Sourced file: inline evaluation of: ``import org.apache.jmeter.threads.JMeterVariables; import org.apache.poi.ss.userm . . . '' : Typed variable declaration : Attempt to resolve method: getLastRowNum() on undefined variable or class name: sheet : at Line: 21 : in file: inline evaluation of: ``import org.apache.jmeter.threads.JMeterVariables; import org.apache.poi.ss.userm . . . '' : sheet .getLastRowNum ( ) 
 in inline evaluation of: ``import org.apache.jmeter.threads.JMeterVariables; import org.apache.poi.ss.userm . . . '' at line number 21
    at bsh.engine.BshScriptEngine.evalSource(BshScriptEngine.java:93) ~[bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
    at bsh.engine.BshScriptEngine.eval(BshScriptEngine.java:46) ~[bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
    at java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:231) ~[java.scripting:na]
    at org.apache.jmeter.util.JSR223TestElement.processFileOrScript(JSR223TestElement.java:219) ~[ApacheJMeter_core-5.4.3.jar:5.4.3]
    at org.apache.jmeter.protocol.java.sampler.JSR223Sampler.sample(JSR223Sampler.java:72) ~[ApacheJMeter_java-5.4.3.jar:5.4.3]
    at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:638) ~[ApacheJMeter_core-5.4.3.jar:5.4.3]
    at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558) ~[ApacheJMeter_core-5.4.3.jar:5.4.3]
    at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) ~[ApacheJMeter_core-5.4.3.jar:5.4.3]
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) ~[ApacheJMeter_core-5.4.3.jar:5.4.3]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

尽管库已正确导入，但似乎无法识别Sheet对象。
你知道这个错误吗？
感谢支持！