jmeter中的java请求 用httpclient写的http请求 及参数化

首先，jmeter中的sample的原理：

 jmeter 中的java 请求，sample 原理，java testjmeter自带的包，把包放在类路径下面，通过反射机制，通过反射机制扫出来。 

先导入五个jar包

package com.young.testing91;import java.io.IOException;import org.apache.http.client.ClientProtocolException;import org.apache.jmeter.config.Arguments;import org.apache.jmeter.protocol.java.sampler.AbstractJavaSamplerClient;import org.apache.jmeter.protocol.java.sampler.JavaSamplerContext;import org.apache.jmeter.samplers.SampleResult;public class addComputerInfoClient extends AbstractJavaSamplerClient {private static String uriPOST = "http://localhost:9000/computers";@Overridepublic Arguments getDefaultParameters() {Arguments arguments = new Arguments();arguments.addArgument("val", "");return arguments;}public SampleResult runTest(JavaSamplerContext arg0) {// 添加事务 new SampleResultSampleResult result = new SampleResult();result.sampleStart();String value = arg0.getParameter("val");try {int responseCode = SendHttpRequest.sendPostRequest(value);if (responseCode == 200) {result.setSuccessful(true);} else {result.setSuccessful(false);}} catch (ClientProtocolException e) {result.setSuccessful(false);e.printStackTrace();} catch (IOException e) {result.setSuccessful(false);e.printStackTrace();} catch (Exception e) {e.printStackTrace();}result.sampleEnd();return result;}public static void main(String[] args) {new addComputerInfoClient().runTest(new JavaSamplerContext(new Arguments()));}}

package com.young.testing91;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;public class SendHttpRequest {// send url is http://localhost:9000/computers?f=ACEprivate static String uriPOST = "http://localhost:9000/computers";public static int sendPostRequest(String value) throws ClientProtocolException, IOException {CloseableHttpClient httpclient = HttpClients.createDefault();HttpPost httpPost = new HttpPost(uriPOST);List<NameValuePair> params = new ArrayList<NameValuePair>();params.add(new BasicNameValuePair("name", value));params.add(new BasicNameValuePair("introduced", "2017-2-19"));params.add(new BasicNameValuePair("discontinued", "2017-2-19"));params.add(new BasicNameValuePair("company", "22"));httpPost.setEntity(new UrlEncodedFormEntity(params));long startTime = System.currentTimeMillis();CloseableHttpResponse httpResponse = httpclient.execute(httpPost);int responseCode = httpResponse.getStatusLine().getStatusCode();System.out.println(responseCode + " ," + (System.currentTimeMillis() - startTime) + "ms");return responseCode;

在jmeter里，多个参数用这个方法增加

arguments.addArgument("val", "");

导包的时候用runnable JAR file, 此方法可以把依赖的类都导出

在ecplise中的httpclient  jar包版本要于jmeter中的版本一直或是比jmeter中的高，否则会报错java.lang.NoSuchFieldError: INSTANCE。

把导出的jar包放到jmeter中 lib 中的ext目录下，然后在jmeter中新建一个java请求，就可以选择刚才导入的jar包，选择参数