GoSpider

Project: Marmot

中文介绍

If you go get difficult, you can move those files under GOPATH in this project to your Golang env's GOPATH.

HTTP Download Helper, Supports Many Features such as Cookie Persistence, HTTP(S) and SOCKS5 Proxy....

1. Introduction

World-Wide-Web robot, also known as spiders and crawlers. The principle is to falsify network data by constructing appointed HTTP protocol data packet, then request resource to the specified host, goal is to access the data returned. There are a large number of web information, human's hand movement such as copy-paste data from web page is time-consuming and laborious, thus inspired the data acquisition industry.

Batch access to public network data does not break the law, but because there is no difference, no control, very violent means will lead to other services is not stable, therefore, most of the resources provider will filtering some data packets(falsify), in this context, batch small data acquisition has become a problem. Integrated with various requirements, such as various API development, automated software testing(all this have similar technical principle). So this project come into the world(very simple).

The Marmot is very easy to understand, just like Python's library requests(Not yet Smile~ --| ). By enhancing native Golang HTTP library, help you deal with some trivial logic (such as collecting information, checking parameters), and add some fault-tolerant mechanisms (such as add lock, close time flow, ensure the high concurrent run without accident). It provides a human friendly API interface, you can reuse it often. Very convenient to support Cookie Persistence, Crawler Proxy Settings, as well as others general settings, such as HTTP request header settings, timeout/pause settings, data upload/post settings. It support all of the HTTP methods POST/PUT/GET/DELETE/... and has built-in spider pool and browser UA pool, easy to develop UA+Cookie persistence distributed spider.

The library is simple and practical, just a few lines of code to replace the previous Spaghetti code, has been applied in some large projects such as Full Golang Automatic Amazon Distributed crawler|spider, has withstood the test of two thousand long acting proxy IP and high concurrency, single machine every day to get millions of data.

The main uses: WeChat development/ API docking / Automated test / Rush Ticket Scripting / Vote Plug-in / Data Crawling

Now We support Default Worker, You can easy use:

lesson1.go

package main

import (
	"fmt"

	"github.com/hunterhug/marmot/miner"
)

func main() {
	// Use Default Worker, You can Also New One:
	// worker:=miner.New(nil)
	miner.SetLogLevel(miner.DEBUG)
	_, err := miner.SetUrl("https://hunterhug.github.io").Go()
	if err != nil {
		fmt.Println(err.Error())
	} else {
		fmt.Println(miner.ToString())
	}
}

See the example dir.such as lesson or practice.

2. How To Use

You can get it by:

go get -v github.com/hunterhug/marmot/miner

Or make your GOPATH sub dir: /src/github.com/hunterhug, and

cd src/github.com/hunterhug
git clone https://github.com/hunterhug/marmot

Suggest Golang1.8+

3. Example

The most simple example such below, more see example/lesson dir:

lesson2.go

package main

// Example
import (
	"fmt"

	"github.com/hunterhug/marmot/miner"
)

func main() {
	// 1. New a worker
	worker, _ := miner.New(nil)
	// 2. Set a URL And Fetch
	html, err := worker.SetUrl("https://hunterhug.github.io").SetUa(miner.RandomUa()).SetMethod(miner.GET).Go()
	if err != nil {
		fmt.Println(err.Error())
	}
	// 4.Print content equal to fmt.Println(worker.ToString())
	fmt.Println(string(html))
}

More detail Example is:

lesson3.go

package main

import (
	// 1:import package
	"github.com/hunterhug/marmot/miner"
	"github.com/hunterhug/parrot/util"
)

func init() {
	// 2:Optional global setting
	miner.SetLogLevel(miner.DEBUG) // optional, set log to debug
	miner.SetGlobalTimeout(3)      // optional, http request timeout time

}

func main() {

	log := miner.Log() // optional, miner log you can choose to use

	// 3: Must new a Worker object, three ways
	//worker, err := miner.NewWorker("http://smart:smart2016@104.128.121.46:808") // proxy format: protocol://user(optional):password(optional)@ip:port
	//worker, err := miner.NewWorker(nil)  // normal worker, default keep Cookie
	//worker, err := miner.NewAPI() // API worker, not keep Cookie
	worker, err := miner.New(nil) // NewWorker alias
	if err != nil {
		panic(err)
	}

	// 4: Set the request Method/URL and some others, can chain set, only SetUrl is required.
	// SetUrl: required, the Url
	// SetMethod: optional, HTTP method: POST/GET/..., default GET
	// SetWaitTime: optional, HTTP request wait/pause time
	worker.SetUrl("https://hunterhug.github.io/fuck.html").SetMethod(miner.GET).SetWaitTime(2)
	worker.SetUa(miner.RandomUa())                // optional, browser user agent: IE/Firefox...
	worker.SetRefer("https://hunterhug.github.io") // optional, url refer
	worker.SetHeaderParm("diyheader", "diy") // optional, some other diy http header
	//worker.SetBData([]byte("file data"))    // optional, if you want post JSON data or upload file
	//worker.SetFormParm("username","jinhan") // optional: if you want post form
	//worker.SetFormParm("password","123")

	// 5: Start Run
	//worker.Get()             // default GET
	//worker.Post()            // POST form request data, data can fill by SetFormParm()
	//worker.PostJSON()        // POST JSON dara, use SetBData()
	//worker.PostXML()         // POST XML, use SetBData()
	//worker.PostFILE()        // POST to Upload File, data in SetBData() too
	//worker.OtherGo("OPTIONS", "application/x-www-form-urlencoded") // Other http method, Such as OPTIONS etcd
	body, err := worker.Go() // if you use SetMethod(), otherwise equal to Get()
	if err != nil {
		log.Error(err.Error())
	} else {
		log.Infof("%s", string(body)) // Print return data
	}

	log.Debugf("%#v", worker.GetCookies) // if you not set log as debug, it will not appear

	// You must Clear it! If you want to POST Data by SetFormParm()/SetBData() again
	// After get the return data by post data, you can clear the data you fill
	worker.Clear()
	//worker.ClearAll() // you can also want to clear all, include http header you set

	// Worker pool for concurrent, every Worker Object is serial as the browser. if you want collateral execution, use this.
	miner.Pool.Set("myfirstworker", worker)
	if w, ok := miner.Pool.Get("myfirstworker"); ok {
		go func() {
			data, _ := w.SetUrl("https://hunterhug.github.io/fuck.html").Get()
			log.Info(string(data))
		}()
		util.Sleep(10)
	}
}

Last example

lesson4.go

package main

import (
	"context"
	"fmt"
	"strings"

	"github.com/hunterhug/marmot/expert"
	"github.com/hunterhug/marmot/miner"
)

func main() {
	// We can debug, to see whether SetBeforeAction make sense
	miner.SetLogLevel(miner.DEBUG)

	// The url we want
	url := "https://hunterhug.github.io"

	// IAM we can NewAPI
	worker := miner.NewAPI()

	// We can aop by context
	// ctx, cancle := context.WithCancel(context.Background())
	// ctx := context.TODO()
	// worker.SetContext(ctx)

	// Before we make some change, And every GET Or POST it will action
	worker.SetBeforeAction(func(ctx context.Context, this *miner.Worker) {
		fmt.Println("Before Action, I will add a HTTP header")
		this.SetHeaderParm("Marmot", "v2")
		this.SetHeaderParm("DUDUDUU", "DUDU")
		// select {
		// case <-ctx.Done():
		// 	fmt.Println(ctx.Err()) // block in here util cancle()
		// 	os.Exit(1)
		// }
	})

	// we cancle it after 5 secord
	// go func() {
	// 	util.Sleep(5)
	// 	cancle()
	// }()

	worker.SetAfterAction(func(ctx context.Context, this *miner.Worker) {
		fmt.Println("After Action, I just print this sentence")
	})

	// Let's Go
	body, err := worker.SetUrl(url).GoByMethod(miner.GET)
	if err != nil {
		fmt.Println(err.Error())
	} else {
		// Parse We want
		fmt.Printf("Output:\n %s\n", parse(body))
	}

	// for {
	//  in here we loop util cancle() success
	// }
}

// Parse HTML page
func parse(data []byte) string {
	doc, err := expert.QueryBytes(data)
	if err != nil {
		fmt.Println(err.Error())
	}
	return strings.TrimSpace(doc.Find("#hero-caption").Text())
	// return doc.Find("title").Text()
}

Easy to use, you just need to New one Worker, and SetUrl, then make some settings and worker.Go().

3.1 The First Step

There are four kinds of worker:

1. worker, err := miner.NewWorker("http://smart:smart2016@104.128.121.46:808") // proxy worker, format: protocol://user(optional):password(optional)@ip:port, alias toNew(), support http(s), socks5
2. worker, err := miner.NewWorker(nil) // normal worker, default keep Cookie, alias to New()
3. worker := miner.NewAPI() // API worker, will not keep Cookie
4. worker, err := miner.NewWorkerByClient(&http.Client{}) // You can also pass a http.Client if you want

3.2 The Second Step

Camouflage our worker:

1. worker.SetUrl("https://hunterhug.github.io") // required: set url you want to
2. worker.SetMethod(miner.GET) // optional: set http method POST/GET/PUT/POSTJSON and so on
3. worker.SetWaitTime(2) // optional: set timeout of http request
4. worker.SetUa(miner.RandomUa()) // optional: set http browser user agent, you can see miner/config/ua.txt
5. worker.SetRefer("https://hunterhug.github.io") // optional: set http request Refer
6. worker.SetHeaderParm("diyheader", "diy") // optional: set http diy header
7. worker.SetBData([]byte("file data")) // optional: set binary data for post or put
8. worker.SetFormParm("username","jinhan") // optional: set form data for post or put
9. worker.SetCookie("xx=dddd") // optional: you can set a init cookie, some website you can login and F12 copy the cookie
10. worker.SetCookieByFile("/root/cookie.txt") // optional: set cookie which store in a file

3.3 The Third Step

Run our worker:

1. body, err := worker.Go() // if you use SetMethod(), auto use following ways, otherwise use Get()
2. body, err := worker.Get() // default
3. body, err := worker.Post() // post form request, data fill by SetFormParm()
4. body, err := worker.PostJSON() // post JSON request, data fill by SetBData()
5. body, err := worker.PostXML() // post XML request, data fill by SetBData()
6. body, err := worker.PostFILE() // upload file, data fill by SetBData(), and should set SetFileInfo(fileName, fileFormName string)
7. body, err := worker.Delete() // you know!
8. body, err := worker.Put() // ones http method...
9. body, err := worker.PutJSON() // put JSON request
10. body, err := worker.PutXML()
11. body, err := worker.PutFILE()
12. body, err := worker.OtherGo("OPTIONS", "application/x-www-form-urlencoded") // Other http method, Such as OPTIONS etc., can not sent binary.
13. body, err := worker.OtherGoBinary("OPTIONS", "application/x-www-form-urlencoded") // Other http method, Such as OPTIONS etc., just sent binary.
14. body, err := worker.GoByMethod("POST") // you can override SetMethod() By this, equal SetMethod() then Go()

3.4 The Fourth Step

Deal the return data, all data will be return as binary, You can immediately store it into a new variable:

1. fmt.Println(string(html)) // type change directly
2. fmt.Println(worker.ToString()) // use spider method, after http response, data will keep in the field Raw, just use ToString
3. fmt.Println(worker.JsonToString()) // some json data will include chinese and other multibyte character, such as 我爱你,我的小绵羊,사랑해

Attention: after every request for a url, the next request you can cover your http request header, otherwise header you set still exist, if just want clear post data, use Clear(), and want clear HTTP header too please use ClearAll() .

Here is some practice in the example dir.

3.5 Other

Hook:

1. SetBeforeAction(fc func(context.Context, *Worker))
2. SetAfterAction(fc func(context.Context, *Worker))

LICENSE

	Copyright 2017 by marmot author: gdccmcm14@live.com.
	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at
		http://www.apache.org/licenses/LICENSE-2.0
	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License