JMETER接口测试

一、jmeter接口测试原理

1、HTTP请求常用的post、get请求，包括请求头信息参数、请求体参数、返回信息参数，及jmeter断言处理等 

二、Jmeter处理机制

1、请求头及请求体进行处理

    ----通过前置处理器提供的方法进行处理，常用的有：用户参数、BeanShell PostProcessor

    ----通过用户参数的方法对请求体和头信息参数进行处理

    ----通过BeanShell PostProcessor

代码如下：

import com.zcsmart.aes.en.AESModule;

import com.zcsmart.aes.IAES;

import com.zcsmart.aes.impl.AES192Impl;

import com.zcsmart.aes.impl.AES256Impl;

importorg.apache.commons.codec.binary.Base64;

import com.zcsmart.aes.SHA256Util;

public String test(){

    log.info("---------start---------");

    String key = "zcsmart.key";

     String iv = "zcsmart.iv";

     IAES iaes = new AES192Impl();

     String plain = "{\"cmd\":\"auth-token\"}";

     String result = iaes.encDataBase64(plain, AESModule.AES_192_CBC_PKCS7, key, iv);

     byte[] sha256Byte = SHA256Util.getServerHash_C(result);

     String sha256_str = Base64.encodeBase64String(sha256Byte);

    String body = "{\"encData\":\""+result+"\"}";

    log.info("body体的hash_body值(): " + sha256_str);

    String auth = "{\"companyid\":\"1104\",\"clientid\":\"1\",\"timestamp\":\"20180503000000\",\"hashbody\":\"" + sha256_str + "\"}";

     String signData = iaes.signData(auth);

    log.info("=== REQUEST body :" + body);

    log.info("=== REQUEST auth :" + auth);

    log.info("=== REQUEST sign :" + signData);

    vars.put("body",body);

    vars.put("auth",auth);

    vars.put("sign",signData);

    return "ok";

}

test();

2、返回信息处理

----通过后置处理器对返回结果进行处理

----常用的JSON Extractor把返回结果拿到，定义变量方便后面接口使用

----使用BeanShell PostProcessor进行结果处理

代码如下

import com.alibaba.fastjson.JSON;

import java.util.Map;

import java.lang.String;

import com.jmeter.functions.sign.DataSign;

importorg.apache.jmeter.engine.util.CompoundVariable;

import org.apache.jmeter.functions.InvalidVariableException;

import java.util.ArrayList;

import java.util.Collection;

public static String test(){

    String item = prev.getResponseDataAsString();

    log.info("item=============="+item);

    Map map = JSON.parseObject(item, Map.class);

    String encData = map.get("encData").toString();

     DataSign dataSign = new DataSign();

     Collection params = new ArrayList();

     params.add(new CompoundVariable("C:\\jmetet_project\\test\\tsm_bjtbiz.pack"));

     params.add(new CompoundVariable("4"));

     params.add(new CompoundVariable("tsm.csc.so"));

     params.add(new CompoundVariable("192"));

     params.add(new CompoundVariable("111"));

     params.add(new CompoundVariable(encData));

     dataSign.setParameters(params);

     String result = dataSign.execute();

     log.info("result: "+result);

     prev.setResponseData(result,"UTF-8");

     return result;

}

test();

3、断言

    ----jmeter断言有很多种，常用的有响应断言、Bean shell断言

    ----响应断言

    ----Bean shell断言

代码如下：

String jsonString =  vars.get("uid");

String id =  vars.get("autoId");

log.info ("The example answer is " + jsonString);    

    if (    jsonString != "1"){

        AssertionResult.setFailureMessage("The User Id is wrong");

            AssertionResult.setFailure(true);

    }

    if (    id != "1"){

        AssertionResult.setFailureMessage("The id is wrong");

            AssertionResult.setFailure(true);

    }

4、参数化

----用户自定义参数来进行参数化

----通过前置处理器的BeanShell定义变量

代码如下：

//登录获取userId

String userId=props.get("userId");

vars.put("userId",userId);

//登录获取token

String token=props.get("token");

vars.put("token",token);

//注册获取grantToken

String grantToken=props.get("grantToken");

vars.put("grantToken",grantToken);

----通过数据库进行参数化