jmeter添加自定义扩展函数之DoubleSum
2024-10-04 16:38:37
1,打开eclipse,新建maven工程,在pom中引用jmeter核心jar包,具体请看---https://www.cnblogs.com/guanyf/p/10863033.html---,这里就不再赘述
2,代码如下:
package com.mytest.functions;
import org.apache.jmeter.engine.util.CompoundVariable; import org.apache.jmeter.functions.AbstractFunction; import org.apache.jmeter.functions.InvalidVariableException; import org.apache.jmeter.samplers.SampleResult; import org.apache.jmeter.samplers.Sampler; import org.apache.jmeter.threads.JMeterVariables; import java.util.Collection; import java.util.LinkedList; import java.util.List; /** * Provides a DoubleSum function that adds two or more Double values. * Mostly copied from LongSum */ public class DoubleSum extends AbstractFunction { private static final List<String> desc = new LinkedList<String>(); private static final String KEY = "__doubleSum"; static { desc.add("First double to add"); desc.add("Second long to add - further doubles can be summed by adding further arguments"); desc.add("Name of variable in which to store the result (optional),The author is guanyf"); } private Object[] values; /** * No-arg constructor. */ public DoubleSum() { } /** * {@inheritDoc} */ @Override public synchronized String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException { JMeterVariables vars = getVariables(); Double sum = 0D; String varName = ((CompoundVariable) values[values.length - 1]).execute().trim(); for (int i = 0; i < values.length - 1; i++) { sum += Double.parseDouble(((CompoundVariable) values[i]).execute()); } try { sum += Double.parseDouble(varName); varName = null; // there is no variable name } catch (NumberFormatException ignored) { } String totalString = Double.toString(sum); if (vars != null && varName != null && varName.length() > 0) {// vars will be null on TestPlan vars.put(varName, totalString); } return totalString; } /** * {@inheritDoc} */ @Override public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { checkMinParameterCount(parameters, 2); values = parameters.toArray(); } /** * {@inheritDoc} */ @Override public String getReferenceKey() { return KEY; } /** * {@inheritDoc} */ @Override public List<String> getArgumentDesc() { return desc; } }
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