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 org.apache.jorphan.util.JOrphanUtils; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Collection; import java.util.LinkedList; import java.util.List; public class MD5 extends AbstractFunction { private static final List<String> desc = new LinkedList<String>(); private static final String KEY = "__MD5"; static { desc.add("String to calculate MD5 hash"); desc.add("Name of variable in which to store the result (optional),作者:管永飞"); } private Object[] values; public MD5() { } @Override public synchronized String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException { JMeterVariables vars = getVariables(); String str = ((CompoundVariable) values[0]).execute(); MessageDigest digest; try { digest = MessageDigest.getInstance("md5"); } catch (NoSuchAlgorithmException ex) { return "Error creating digest: " + ex; } String res = JOrphanUtils.baToHexString(digest.digest(str.getBytes())); if (vars != null && values.length > 1) { String varName = ((CompoundVariable) values[1]).execute().trim(); vars.put(varName, res); } return res; } @Override public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { checkMinParameterCount(parameters, 1); values = parameters.toArray(); } @Override public String getReferenceKey() { return KEY; } @Override public List<String> getArgumentDesc() { return desc; } }