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