Jmeter自定义Java请求开发

一、本次实验目的

IDEA新建maven项目，使用java开发自定义jmeter的请求。

本次开发使用的代码，会百度云分享给大家。

二、本次实验环境

Idea	2017.02
Jmeter	5.1.1

三、新建maven项目

pom.xml文件中导入依赖。

 

 <dependencies>

    <!-- https://mvnrepository.com/artifact/org.apache.jmeter/ApacheJMeter_functions --> <dependency> <groupId>org.apache.jmeter</groupId> <artifactId>ApacheJMeter_functions</artifactId> <version>5.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.jmeter/ApacheJMeter_core --> <dependency> <groupId>org.apache.jmeter</groupId> <artifactId>ApacheJMeter_core</artifactId> <version>5.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.jmeter/ApacheJMeter_java --> <dependency> <groupId>org.apache.jmeter</groupId> <artifactId>ApacheJMeter_java</artifactId> <version>5.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.5</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> </dependencies>

四、代码编写

4.1、以上一节监控的demo实现的两个接口为例，来编写实现请求的自定义请求

打开jmeter，添加javarequest如下图所示：

默认只有两个class。

4.2、新建class实现JavaSamplerClient接口

 

package com.jmeter.functions;
import org.apache.jmeter.config.Arguments; import org.apache.jmeter.protocol.java.sampler.JavaSamplerClient; import org.apache.jmeter.protocol.java.sampler.JavaSamplerContext; import org.apache.jmeter.samplers.SampleResult; public class CustemRequest implements JavaSamplerClient { @Override public void setupTest(JavaSamplerContext javaSamplerContext) { } @Override public SampleResult runTest(JavaSamplerContext javaSamplerContext) { return null; } @Override public void teardownTest(JavaSamplerContext javaSamplerContext) { } @Override public Arguments getDefaultParameters() { return null; } }

我们可以看到，具体会实现4个方法。

4.3、实现具体方法

启动上一节实现的应用。localhost:8086

具体实现代码如下：

 

package com.jmeter.functions;

import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.utils.URIBuilder; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.message.BasicHeader; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.apache.jmeter.config.Arguments; import org.apache.jmeter.protocol.java.sampler.JavaSamplerClient; import org.apache.jmeter.protocol.java.sampler.JavaSamplerContext; import org.apache.jmeter.samplers.SampleResult; import java.net.URISyntaxException; import java.util.LinkedList; import java.util.List; import java.util.Random; public class CustemRequest implements JavaSamplerClient { //定义显示请求地址的变量名 private static final String REQUEST_RUL = "URL"; //定义默认请求的URL地址 private static final String DEFAULT_URL = "http://localhost:8086/user/get"; //用户输入的URL private String inputUrl; //用来保存http请求的响应结果，并把结果放到jmeter的查看结果树里面 private String ResponseResult; //返回成功的状态码 private static final int SUCCESS_CODE = 200; //以下方法，打印输出的目的就是检验此4个方法的执行顺序，大家执行的时候可以后台结果详细查看 @Override public void setupTest(JavaSamplerContext javaSamplerContext) { System.out.println("******setupTest******"); inputUrl = javaSamplerContext.getParameter(REQUEST_RUL,DEFAULT_URL); System.out.println("用户默认输出的URL地址------>:" + inputUrl); } /** * 真正执行的方法 * @param javaSamplerContext * @return */ @Override public SampleResult runTest(JavaSamplerContext javaSamplerContext) { SampleResult sampleResult = new SampleResult(); Object[] param = new Object[]{"id"}; Object[] value = new Object[]{26}; List<NameValuePair> nameValuePairs = getParam(param, value); /** * 标记一个事务的开始 */ sampleResult.sampleStart(); try { ResponseResult = (String) sentGetRequest(inputUrl, nameValuePairs); } catch (Exception e) { e.printStackTrace(); } sampleResult.setSampleLabel("自定义本地的请求访问"); sampleResult.setSuccessful(true); //告诉查看结果树是否成功 sampleResult.setResponseData(ResponseResult,"utf-8"); sampleResult.setDataType(SampleResult.TEXT); return sampleResult; } @Override public void teardownTest(JavaSamplerContext javaSamplerContext) { } @Override public Arguments getDefaultParameters() { //在jmeter显示属性 Arguments arguments = new Arguments(); arguments.addArgument(REQUEST_RUL,DEFAULT_URL); return arguments; } //自定义实现get请求 /** * 发送get请求 * @param url 请求URL地址 * @param nameValuePairs 请求参数 * @return JSON或者字符串 * @throws Exception */ public static Object sentGetRequest(String url, List<NameValuePair> nameValuePairs) throws Exception{ CloseableHttpClient client = null; CloseableHttpResponse response = null; try { /** * 新建HttpClient对象 */ client = HttpClients.createDefault(); /** * 新建URIBuilder */ URIBuilder uriBuilder = new URIBuilder(url); /** * 设置参数 */ uriBuilder.addParameters(nameValuePairs); /** * 创建HttpGet */ HttpGet httpGet = new HttpGet(uriBuilder.build()); /** * 设置请求头部编码 */ httpGet.setHeader(new BasicHeader("content-Type","application/x-www-form-urlencoded; charset=utf-8")); /** * 请求服务 */ response = client.execute(httpGet); int statusCode = response.getStatusLine().getStatusCode(); if (SUCCESS_CODE == statusCode){ /** * 获取返回对象 */ HttpEntity entity = response.getEntity(); /** * 通过EntityUtils获取返回内容 */ String result = EntityUtils.toString(entity,"utf-8"); return result; }else { System.out.println("请求失败！！！！！！"); } } catch (URISyntaxException e) { e.printStackTrace(); }finally { response.close(); client.close(); } return null; } private static List<NameValuePair> getParam(Object[] params,Object[] values){ /** * 参数简单校验合法性 */ boolean flag = params.length>0 && values.length>0 && params.length == values.length; if (flag){ List<NameValuePair> nameValuePairs = new LinkedList<>(); for (int i = 0 ; i<params.length; i++){ nameValuePairs.add(new BasicNameValuePair(params[i].toString(),values[i].toString())); } return nameValuePairs; }else { System.out.println("请求参数为空且参数长度不一致"); } return null; } public static void main(String[] args) { Object[] param = new Object[]{"id"}; Object[] value = new Object[]{26}; final String DEFAULT_URL = "http://localhost:8086/user/get"; List<NameValuePair> nameValuePairs = getParam(param, value); try { String o = (String) sentGetRequest(DEFAULT_URL, nameValuePairs); System.out.println(o); } catch (Exception e) { e.printStackTrace(); } } } 

4.4、maven到处jar包

• 放到jmeter G:\apache-jmeter-5.1.1\lib\ext目录
• 重新打开jmeter

五、总结

至此我们自定义的java的request的请求已经开发完毕。

有两个问题？后面会一一实现。

1. 在代码中如何实现get请求中的id参数化？
2. 在代码中如何编写post请求？