A simulation is a description of the load test. It describes how, possibly several, user populations will run: which scenario they will execute and how new virtual users will be injected.

A Simulation is a real Scala class containing 4 different parts:

• The HTTP protocol configuration
• The headers definition
• The scenario definition
• The simulation definition

Can see the demo there: Recoder Demo

Hooks

Gatling provides two hooks:

• before
  for executing some code before the simulation actually runs
• after
  for executing some code after the simulation actually runs

Spring boot 有自己的banner, 但是也可以设置使用自定制的， 只要在自己的项目中新加：/springboot/src/main/resources/banner.txt。

利用这个网站生成字符Patorjk，我们可以利用生成的字符串放入这个banner.txt文件。

重启spring boot就可以看到了

介绍

Spring Boot简化了基于Spring的应用开发，你只需要”run”就能创建一个独立的，产品级别的Spring应用。话不多说，直接参见官网Spring Boot

环境

1. 安装JDK
   java -version - 检查Java安装
   安装后添加环境变量。

2. 安装Maven
   我的是Windows，方法如下：
   Adding to PATH: Add the unpacked distribution’s bin directory to your user PATH environment variable by opening up the system properties (WinKey + Pause), selecting the “Advanced” tab, and the “Environment Variables” button, then adding or selecting the PATH variable in the user variables with the value C:\Program Files\apache-maven-3.5.0\bin. The same dialog can be used to set JAVA_HOME to the location of your JDK, e.g. C:\Program Files\Java\jdk1.7.0_51
   Open a new command prompt (Winkey + R then type cmd) and run mvn -v to verify the installation.

3. 新建文件夹作为Project根目录，创建POM

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   <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>myFirstproject</artifactId> <version>0.0.1-SNAPSHOT</version> <!-- Inherit defaults from Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.0.BUILD-SNAPSHOT</version> </parent> <!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <!-- Add Spring repositories --> <!-- (you don't need this if you are using a .RELEASE version) --> <repositories> <repository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> <snapshots><enabled>true</enabled></snapshots> </repository> <repository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> </pluginRepository> <pluginRepository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </pluginRepository> </pluginRepositories> </project>

基于Scala 开发的开源免费性能压测工具。主要用于测量基于HTTP的服务器，比如Web应用程序，RESTful服务等。
方方面面的原因，准备用Gatling做性能测试，对这个工具做一个简单的研究。

Install

去官网下载： http://gatling.io/download/
下载之后，解压到相应的目录中去。

• bin 目录下有2个脚本，gatling和recorder， gatling用来运行测试， recorder用来启动录制脚本的UI的。
• conf 目录是关于Gatling自身的一些配置。
• lib 目录是Gatling自身依赖的库文件。
• results 目录用来存放测试报告的。
• target
• user-files
  • bodies
  • data 数据目录，csv参数文件存放在这里
  • simulations 测试脚本（所有的脚本都在这里）

Recorder

运行bin目录下的’recorder.bat’，打开Recorder Window。

录制之前要先设置浏览器用Gatling Recorder’s proxy，录制之后，保存脚本。录制一个搜索：

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package default

import scala.concurrent.duration._

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._

class RecordedSimulation extends Simulation {

	val httpProtocol = http
		.baseURL("https://www.baidu.com")
		.inferHtmlResources()
		.acceptHeader("image/png,image/*;q=0.8,*/*;q=0.5")
		.acceptEncodingHeader("gzip, deflate")
		.acceptLanguageHeader("zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3")
		.userAgentHeader("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0")

	val headers_0 = Map("Accept" -> "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")

    val uri1 = "https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/jquery/jquery-1.10.2.min_65682a2.js"
    val uri2 = "www.baidu.com"
    val uri3 = "http://baidu.com"

	val scn = scenario("RecordedSimulation")
		.exec(http("request_0")
			.get(uri3 + "/")
			.headers(headers_0)
			.resources(http("request_1")
			.get("/img/baidu_jgylogo3.gif"),
            http("request_2")
			.get("/img/bd_logo1.png")))
		.pause(4)
		.exec(http("request_3")
			.get("/s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&ch=&tn=baidu&bar=&wd=gatling&rn=&oq=&rsv_pq=e632af2400018ab7&rsv_t=21efo2auHiH8VwtAPnYwISgfAskcOJ5NLsAxSJh2B%2BZEb6LFvXLa%2BPVXxwc&rqlang=cn")
			.headers(headers_0)
			.resources(http("request_4")
			.get("/aladdin/tpl/dict3/repeat_small.c6d62112.png"),
            http("request_5")
			.get("/aladdin/img/dic3/iconall.gif")))

	setUp(scn.inject(atOnceUsers(1))).protocols(httpProtocol)
}

录制功能应该一般都不太会用到。

List here just for a reminder:

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url = "http://34.207.223.236"

files = {"file": open("c:\\a.csv", 'rb')}

response = requests.post(url, files=files)

print(response.text)

requests will send a multi-part form POST body with the upload_file field set to the contents of the a.csv file.

load

从外部JSON文件变成dict字典(外部文件一定要是json格式)
json.load(open('a.json',"r"))

dump

把dict字典变成json格式，生成到外部文件里面
json.dump(dict,open('a.json',"w"))

dumps

Convert Python Object (Dict) to JSON

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import json
 
d = {}
d["Name"] = "Luke"
d["Country"] = "Canada"
 
print json.dumps(d, ensure_ascii=False)
# result {"Country": "Canada", "Name": "Luke"}

loads

To convert JSON to a Python dict use this:

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import json
 
json_data = '{"name": "Brian", "city": "BJ"}'
python_obj = json.loads(json_data)
print python_obj["name"]
print python_obj["city"]

大过年去的，本以为人会少一些，绝逼是低估了中国人的数量，哈哈。

整体还是不错的，外观大气，里边也很大，花了近5个小时才看完。

儿童科技乐园，都说有各种科学知识展示，适合带小孩游玩，我觉得也就是一个游乐场而已，还有就是很多的熊孩子。