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";

	@Override
	public Arguments getDefaultParameters() {
		Arguments arguments = new Arguments();
		arguments.addArgument("val", "");

		return arguments;
	}

	public SampleResult runTest(JavaSamplerContext arg0) {
		// 添加事务 new SampleResult
		SampleResult 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=ACE
		private 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

在这分享一个之前学习过的jmeter视频，还不错，关注公众号【测试开发加油站】

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