JMeter/BeanShell：类型化变量声明：数组初始化器错误：null

Question

响应消息：org.apache.jorphan.util.JMeterException：调用bsh方法时出错：eval Sourced file：inline evaluation of:'import java.io.FileWriter；导入java.util.Arrays；导入java.io.Writer；伊波尔。.':类型化变量声明：数组初始值设定项中的错误：日志文件中的null

2018/02/01 12:32:52 error-jmeter.util.BeanShellInterpreter：调用bsh方法时出错：eval Sourced file：inline evaluation of:'import java.io.fileWriter；导入java.util.Arrays；导入java.io.Writer；伊波尔。.':类型化变量声明：数组初始值设定项错误：null

2018/02/01 12:32:52 warn-jmeter.protocol.java.sampler.beanshellSampler：org.apache.jorphan.util.jmeterException：调用bsh方法时出错：eval Sourced file：inline evaluation of:'import java.io.fileWriter；导入java.util.Arrays；导入java.io.Writer；伊波尔。.':类型化变量声明：数组初始值设定项错误：null

有人帮忙吗？：）

    import java.io.FileWriter;
import java.util.Arrays;
import java.io.Writer;
import java.util.List;

//Default separator
char SEPARATOR = ',';

//function write line in csv
public void writeLine(FileWriter writer, String[] params, char separator)
{
   boolean firstParam = true;

   StringBuilder stringBuilder = new StringBuilder();
   String param = "";

   for (int i = 0; i < params.length; i++)
   {
      //get param
      param = params[i];
      log.info(param);

         //if the first param in the line, separator is not needed
       if (!firstParam) 
       {
           stringBuilder.append(separator);
       }

         //Add param to line
       stringBuilder.append(param);

       firstParam = false;
   }

   //prepare file to next line
   stringBuilder.append("\n");

   //add to file the line
   log.info(stringBuilder.toString());
   writer.append(stringBuilder.toString());

}

//get path of csv file (creates new one if its not exists)
String csvFile = "/JMeter/dane.csv"; // for example '/User/Downloads/blabla.csv'

String[] params = {${context1}, ${context2}};

FileWriter fileWriter = new FileWriter(csvFile, true);
writeLine(fileWriter, params, SEPARATOR);

//proper close to file
fileWriter.flush();
fileWriter.close();

Answer 1

>

使用调试采样器和查看结果树侦听器组合，再次检查context1和context2变量值

将第47行修改为：

String[] params = {"${context1}", "${context2}"};

如果您仍然面临问题，请尝试在try块中围绕您的代码，如下所示：

try {
    //your code here
}
catch (Throwable ex) {
   log.info("Error in Beanshell", ex);
   throw ex;
}

这样，您将在jmeter.log文件中获得一个“人类可读的”stacktrace。