import java.util.Collection;

import java.util.LinkedList;

import java.util.List;

import org.apache.jmeter.engine.util.CompoundVariable;

import org.apache.jmeter.samplers.SampleResult;

import org.apache.jmeter.samplers.Sampler;

import org.apache.jmeter.threads.JMeterVariables;

public class MobileGenerator extends AbstractFunction {

   private static

   //定義function名稱

   private static final String KEY = "__MobileGenerator";

   private static String[] telFirst = "134,135,136,137,138,139,150,151,152,157,158,159,130,131,132,155,156,133,153"

         .split(",");

   //自定義function的描述

   static {

      desc.add("Name of variable in which to store the result (optional)");     

   }

   private CompoundVariable varName;

   //執行部分

   public String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException {

      int index = getNum(0, telFirst.length - 1);

      String first = telFirst[index];

      String second = String.valueOf(getNum(1, 888) + 10000).substring(1);

      String thrid = String.valueOf(getNum(1, 9100) + 10000).substring(1);

      String mobile = first + second + thrid;

      if (varName != null) {

         JMeterVariables vars = getVariables();

         final String varTrim = varName.execute().trim();

         if (vars != null && varTrim.length() > 0) {// vars will be null

                                            // on TestPlan

            vars.put(varTrim, mobile);

         }

      } 

      return mobile;

   }

   //設定引數值

   public void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException {

      //校驗引數個數  checkParameterCount(Collection<CompoundVariable> parameters, int min, int max)

      checkParameterCount(parameters, 0, 1);

      //將值存入變數中

      Object[] values = parameters.toArray();

      if (values.length > 0) {

         varName = (CompoundVariable) values[0];

      } else {

         varName = null;

      }

   }

   @Override

   public String getReferenceKey() {

      return KEY;

   }

   @Override

   public List<String> getArgumentDesc() {

      return desc;

   }

   private static int getNum(int start, int end) {

      return (int) (Math.random() * (end - 1));

   }

}

import static org.apache.jmeter.functions.FunctionTestHelper.makeParams;

import java.util.Collection;

import org.apache.jmeter.engine.util.CompoundVariable;

import org.apache.jmeter.junit.JMeterTestCase;

import org.junit.Test;

public class MobileGeneratorTest extends JMeterTestCase {

   @Test

   public void test() throws Exception {

      MobileGenerator mobileGenerator = new MobileGenerator();

      Collection<CompoundVariable> params = makeParams("mobile",null,null);

      mobileGenerator.setParameters(params);

      String string = mobileGenerator.execute();

      System.out.println(string);

   }

}