jmeter函数开发实现返回随机字符串
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2022-03-03 16:53:00
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实现功能:对给定的用逗号分隔的字符串,随机返回其中一个。
代码如下:
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package org.apache.jmeter.functions; import org.apache.jmeter.engine.util.CompoundVariable; import org.apache.jmeter.samplers.SampleResult; import org.apache.jmeter.samplers.Sampler; import org.apache.jmeter.util.JMeterUtils; import java.util.*; import java.util.Random; /** * Function to return a random string you given * Pass parameters split by comma * * @since 2.10 */ public class GetRandomStr extends AbstractFunction { private static final List<String> desc = new LinkedList<>(); private static final String KEY = "__getrandomstr"; //$NON-NLS-1$ static { desc.add(JMeterUtils.getResString("getrandomstr_string")); //$NON-NLS-1$ } private Object[] values; Random ra; int rannum; public GetRandomStr() { } /** {@inheritDoc} */ @Override public String execute(SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException { String randomString = ""; //$NON-NLS-1$ ra =new Random(); rannum = ra.nextInt(values.length); try { randomString = ((CompoundVariable) values[rannum]).execute(); } catch (Exception uee) { return null; } return randomString; } /** {@inheritDoc} */ @Override public void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { //checkParameterCount(parameters, 1); values = parameters.toArray(); } /** {@inheritDoc} */ @Override public String getReferenceKey() { return KEY; } /** {@inheritDoc} */ @Override public List<String> getArgumentDesc() { return desc; } }
在messages.properties中增加对应的属性:
urlencode_string=String to encode in URL encoded chars
getrandomstr_string=return a random you given,split by comma
use_custom_dns_resolver=Use custom DNS resolver
使用截图: