从JMeter官网下载一个JMeter绿包，根据自身的操作系统来选择包，本文主要以Windows操作系统为例。
将下载好的包放置本地磁盘中，建议放在系统盘以外的其他盘符，防止出现文件读写权限问题。
示例代码：
/**
* 执行Jmeter
* @Param jmeterParam为参数实体，其中包含网络请求的url、method等参数
* @Param jmeterHomePath为本地Jemter地址，如本机D:\apache-jmeter-5.5\
* */
public void runJmeter(JmeterParam jmeterParam) throws IOException, InterruptedException {
String data="";
File jmeterHome = new File(jmeterHomePath);
// 分隔符
String slash = System.getProperty("file.separator");
try{
//判断jmeterHome
if (jmeterHome.exists()) {
File jmeterProperties = new File(jmeterHome.getPath() + slash + "bin" + slash + "jmeter.properties");
if (jmeterProperties.exists()) {
// 初始化压测引擎
StandardJMeterEngine jmeter = new StandardJMeterEngine();
// JMeter初始化(属性、日志级别、区域设置等)
JMeterUtils.setJMeterHome(jmeterHome.getPath());
JMeterUtils.loadJMeterProperties(jmeterProperties.getPath());
JMeterUtils.initLogging();
JMeterUtils.initLocale();
// JMeter测试计划
HashTree testPlanTree = new HashTree();
//开始组装HashTree
URL uri = new URL(jmeterParam.getUrl());
String protocol = uri.getProtocol();
String host = uri.getHost();
String path = uri.getPath();
String query = uri.getQuery();
String method = jmeterParam.getMethod();
int port = uri.getPort(); //需要额外处理，测试的时候取出来，有-1的情况
if(port == -1){
if("http".equals(protocol)){
port = 80;
}
if("https".equals(protocol)){
port = 443;
}
}
HTTPSamplerProxy httpSamplerProxy = new HTTPSamplerProxy();
httpSamplerProxy.setDomain(host);
httpSamplerProxy.setPort(port);
if(Objects.nonNull(query) && !"".equals(query)){
httpSamplerProxy.setPath(path + "?" + query);
}else{
httpSamplerProxy.setPath(path); //路径
}
httpSamplerProxy.setMethod(method);
httpSamplerProxy.setName("JmeterTest"+System.currentTimeMillis());
httpSamplerProxy.setProperty(TestElement.TEST_CLASS, HTTPSamplerProxy.class.getName());
httpSamplerProxy.setProperty(TestElement.GUI_CLASS, HttpTestSampleGui.class.getName());
// Loop Controller 循环控制
LoopController loopController = new LoopController();
loopController.setLoops(jmeterParam.getLoops());
loopController.setFirst(true);
loopController.setProperty(TestElement.TEST_CLASS, LoopController.class.getName());
loopController.setProperty(TestElement.GUI_CLASS, LoopControlPanel.class.getName());
loopController.initialize();
// Thread Group 线程组
ThreadGroup threadGroup = new ThreadGroup();
threadGroup.setName("ThreadGroup");
threadGroup.setNumThreads(jmeterParam.getThreads());
threadGroup.setRampUp(jmeterParam.getRampUp());
threadGroup.setSamplerController(loopController);
threadGroup.setProperty(TestElement.TEST_CLASS, ThreadGroup.class.getName());
threadGroup.setProperty(TestElement.GUI_CLASS, ThreadGroupGui.class.getName());
// Test Plan 测试计划
TestPlan testPlan = new TestPlan("JMeterPlan");
testPlan.setProperty(TestElement.TEST_CLASS, TestPlan.class.getName());
testPlan.setProperty(TestElement.GUI_CLASS, TestPlanGui.class.getName());
testPlan.setUserDefinedVariables((Arguments) new ArgumentsPanel().createTestElement());
// 从以上初始化的元素构造测试计划
testPlanTree.add(testPlan);
HashTree threadGroupHashTree = testPlanTree.add(testPlan, threadGroup);
threadGroupHashTree.add(httpSamplerProxy);
String jmeterTestName= UUID.randomUUID().toString();
String savePath= this.getClass().getClassLoader().getResource("static").getPath()+"/jmeter/jmx/";
File jmxPath = new File(savePath);
if (!jmxPath.exists()) {
jmxPath.mkdirs();
}
logger.info("路径为："+savePath);
// 将生成的测试计划保存为JMeter的.jmx文件格式
SaveService.saveTree(testPlanTree, new FileOutputStream(savePath + jmeterTestName+".jmx"));
// 在stdout中添加summary输出，得到测试进度，如:
// summary = 2 in 1.3s = 1.5/s Avg: 631 Min: 290 Max: 973 Err: 0 (0.00%)
Summariser summer = null;
String summariserName = JMeterUtils.getPropDefault("summariser.name", "summary");
if (summariserName.length() > 0) {
summer = new Summariser(summariserName);
}
// 将执行结果存储到.jtl文件中
String logFile = savePath + jmeterTestName+".jtl";
ResultCollector resultCollector = new ResultCollector(summer);
resultCollector.setFilename(logFile);
testPlanTree.add(testPlanTree.getArray()[0], resultCollector);
logger.info("执行的测试结果为："+ JSONObject.valueToString(resultCollector));
// 单机执行测试计划
jmeter.configure(testPlanTree); // 设置回调监听器，并添加状态
jmeter.run();
//调用命令生成jmeter -g D:\apache-jmeter-5.5\example.jtl -o D:\apache-jmeter-5.5\ResultReport
StringBuilder command = new StringBuilder();
//此代码块是为了Windows环境正常执行，研发环境可忽略
if (Objects.equals(File.separator, "\\")) {
command.append("cmd.exe /c ");
}
String reportPath=this.getClass().getClassLoader().getResource("static").getPath()+"/jmeter/report/"+jmeterTestName+"/";
File f_1 = new File(reportPath);
if (!f_1.exists()) {
f_1.mkdirs();
}
command.append(jmeterHomePath+File.separator+"bin").append(File.separator).append("jmeter -g ").append(logFile).append(" -o ").append(reportPath);
logger.info("{}", command.toString());
// 等待执行完成
Runtime.getRuntime().exec(command.toString()).waitFor();
String sourcePath=this.getClass().getClassLoader().getResource("static").getPath()+"/jmeter/report/"+jmeterTestName;
String zipPath=this.getClass().getClassLoader().getResource("static").getPath()+"/jmeter/report/"+jmeterTestName+".zip";
ZipTools.toZip(zipPath,sourcePath,true);
//zipPath为压缩后的报告所在地址
}
}
}catch (Exception e){
e.printStackTrace();
}
result.put("code",code);
result.put("msg",msg);
result.put("data",data);
return result;
}以上为基础的JMeterAPI使用方法。
