杨培文

Yang Peiwen

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解决方法: 

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ssh-keygen -R ypw.hk

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nano /etc/apt/sources.list

# deb http://mirrors.ustc.edu.cn/raspbian/raspbian/ wheezy main contrib non-free rpi
deb http://mirrors.ustc.edu.cn/archive.raspberrypi.org/debian/ wheezy main
deb-src http://mirrors.ustc.edu.cn/raspbian/raspbian/ wheezy main contrib non-free rpi

apt-get update
apt-get upgrade

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# coding:utf-8
__author__ = 'yangpeiwen'

from urllib2 import *
import socket

def zhongjian(yourstr, leftstr, rightstr):
    leftposition = yourstr.find(leftstr)
    rightposition = yourstr.find(rightstr, leftposition)
    return yourstr[leftposition+len(leftstr):rightposition]
    # 取文本中间内容

header = """
Host: xueqiu.com
Connection: keep-alive
Accept: application/json, text/javascript, */*; q=0.01
cache-control: no-cache
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36 QQBrowser/3.0.2613.400
Referer: http://xueqiu.com/S/MON
Accept-Encoding: deflate,sdch
Accept-Language: zh-CN,zh;q=0.8
Cookie: xq_a_token=f04765824325b4fdaf86c559e528bd4322a38873; xq_r_token=88deececc3852b877ed15dd7795761e9a6790ea7; __utmt=1; __utma=1.1891582346.1427038206.1427038206.1427038206.1; __utmb=1.1.10.1427038206; __utmc=1; __utmz=1.1427038206.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
"""

def addheader(irequest, iheader):
    iheaders = iheader.split("\n")
    for iheader1 in iheaders:
        iheader2 = iheader1.split(":")
        try:
            irequest.add_header(iheader2[0], iheader2[1])
        except:
            pass
# 添加Header防止网站反爬虫

asd = "http://xueqiu.com/statuses/stock_timeline.json?symbol_id=MON&count=200&page=1"
url = Request(asd)  # 创建一个urllib2里面的Request,这个request可以伪造HTTP头
addheader(url, header)
socket.setdefaulttimeout(10)

html = urlopen(url).read()
html = html.replace("false", "False")
html = html.replace("true", "True")
html = html.replace("null", "None")
# 将javascript的false等,转为python的False
print html
urls = ""
exec("urls = "+html)  # 开挂直接把文本转成python里的变量
ilists = urls['list']  # 文章都在list理=里面
for ilist in ilists:
    if ilist['title']:  # title可能为None
        link = zhongjian(ilist['text'].decode('utf-8'), '>', '<')  #寻找链接
        print ilist['title'], "----", link

发表于 更新于

首先是简单的拍照功能,通过下面的php可以实现远程查看照片

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<?php
echo shell_exec("raspistill -t 1 -o /home/pi/www/a.jpg -w 2592 -h 1944");
echo '<img style="width: 80%" src=a.jpg>';
?>

如果出错需要执行下面的代码: 

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chmod a+rw /dev/vchiq

来自:http://www.raspbian.org/RaspbianQuake3

然后,是C语言写的定时拍照器,一分钟一张照片

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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
while(1)
  {
    char cmd[100];
    sprintf(cmd, "raspistill -t 1 -o /home/pi/www/img/%d.jpg -w 1920 -h 1080", $
    system(cmd);
    printf(cmd);
    printf("\n");
    sleep(60);
  }
}


然后我们可以通过gcc编译并执行:

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gcc paizhao.c
./a.out

但是呢,我们如果关闭putty,拍照就会停止,所以我们需要一个叫screen的东西

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screen -S "ypw"
./a.out

执行上面的代码之后,关闭putty也会自动拍照了.

然后有了那么多照片之后,怎么样去查看呢?

那么我们就需要一个php遍历文件了

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<!DOCTYPE html>
<html lang="zh-CN">
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>拍的照片们</title>
<?php
$dir=dirname(__FILE__);
$files = scandir($dir);
foreach($files as $file)
{
    if(strpos($file,".jpg"))
    {
        echo '<img style="width:80%" src='.$file.'><br>';
        $time=filemtime($file);
        echo "文件名：$file    拍摄时间：".date("Y-m-d H:i:s",$time)."<br>\n";
    }
}
?>

然后保存到/home/pi/www/img文件夹下,这样访问http://192.168.191.3/img/的时候就会返回所有的照片.

拍了一天之后,照片有一千多张,访问刚才那个页面之后内存会崩溃,这样我们就没办法去查看图片了,这时候就需要python来帮忙下载了.

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__author__ = 'lucky dog'

from bs4 import BeautifulSoup
from urllib import *
import os

url = "http://192.168.191.3/img/"

html = urlopen(url).read()
soup = BeautifulSoup(html)
imgs = soup.findAll("img")
for img in imgs:
    print img['src']
    url2 = "http://192.168.191.3/img/"+img['src']
    filepath = "img/"+img['src']
    if not os.path.exists(filepath):
        urlretrieve(url2.encode('utf-8'), filepath)

这样图片就都下载下来了.

下面这几张图片就是树莓派和我的植物

之后我觉得晚上都是黑色的图片多无聊,我就加了个灯

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# coding:utf-8
__author__ = 'Administrator'

from urllib import *
from bs4 import BeautifulSoup
import socket
import threading
import Queue
import time

url = 'http://libopac.btbu.edu.cn:8080/opac/browseByCategory?pager.offset='
socket.setdefaulttimeout(3)  # 3秒超时
maxnum = 634309  # 图书总数
print "\n"

q = Queue.Queue()  # 构造一个队列,它可以put入任务和get出任务,先进先出
# 比如放入1,2,3,4,5    则你取出来的时候也是取出来1,2,3,4,5这样的顺序
f = open('library3.txt', 'a')

def getlinks():
    # 线程1,获取链接的线程
    offset = 192850  # 调这个值可以断点续传
    while offset < maxnum:
        try:
            html = urlopen(url + str(offset)).read().decode('utf-8')
            soup = BeautifulSoup(html)
            links = soup.findAll(target='_blank')  # 寻找所有的链接
            onetask = (offset, links)  # 构建一个(offset, links)结构作为task,其实就是(下到第几本书了, 链接们是什么)
            q.put(onetask)  # 放入queue中
            offset += 25
            print "\r" + str(offset) + "/" + str(maxnum) + "    " + str(offset * 100.0 / maxnum) + "%   第" + str(
                offset / 25) + "页----获取列表"
        except IOError:
            # print 'timeout'
            pass
        except Exception, e:
            print e

class MyThread(threading.Thread):
    def __init__(self, queue):
        threading.Thread.__init__(self)
        self.queue = queue  # 初始化构造函数,传入queue

    def run(self):
        while True:
            myonetask = self.queue.get()  # 获取任务
            myoffset, mylinks = myonetask  # 解析任务
            print "\r" + str(myoffset) + "/" + str(maxnum) + "    " + str(myoffset * 100.0 / maxnum) + "%   第" \
                  + str(myoffset / 25) + "页----收到任务"
            mywritecontent = ""
            for mylink in mylinks:
                always = True  # 建立一个循环下载,
                while always:
                    try:
                        myurl2 = 'http://libopac.btbu.edu.cn:8080' + mylink['href']
                        # print link.text, url2
                        mywritecontent += myurl2.encode('utf-8', 'ignore') + "\n"
                        mywritecontent += mylink.text.encode('utf-8', 'ignore') + "\n"
                        # 标题信息和内容
                        myhtml2 = urlopen(myurl2).read()
                        mysoup2 = BeautifulSoup(myhtml2)
                        mywritecontent += mysoup2.find(id='detailsTable').text.encode('utf-8', 'ignore') + "\n"
                        # 获得馆藏信息    getHoldingsInformation
                        myjson3 = urlopen(myurl2.replace('book', 'book/getHoldingsInformation')).read()
                        mywritecontent += myjson3 + "\n\n"
                        always = False  # 下载成功之后才取消循环
                    except IOError:
                        pass  # 如果是IOError就是超时了,pass掉(相当于C++的;空语句)
                    except Exception:
                        # 为了防止某些失效链接,我们将跳过失败的书籍
                        # 比如http://libopac.btbu.edu.cn:8080/opac/book/627232
                        always = False
            print "\r" + str(myoffset) + "/" + str(maxnum) + "    " + str(myoffset * 100.0 / maxnum) + "%   第" \
                  + str(myoffset / 25) + "页----下载完成----" + str(myoffset + 25)
            mywritecontent += "\n==========第" + str(myoffset / 25) + "页==========\n\n"
            f.write(mywritecontent)
            f.flush()  # 写出到文件
            time.sleep(0.01)  # 线程累了 休息一下

t1 = threading.Thread(target=getlinks)  # 获取链接的线程
t1.start()

for asd in range(10):
    t2 = MyThread(q)  # 从队列里下载数据的线程
    t2.start()

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# coding:utf-8
__author__ = 'yangpeiwen'

from urllib import *
from bs4 import BeautifulSoup
import socket
import os

url = "http://wap.jdxs.net/index.php/book/chapter/bid=100722/cid=16819732/"
socket.setdefaulttimeout(3)
path = "xs"

socket.setdefaulttimeout(3)  # 3秒超时
if os.path.exists(path) is False:
    os.makedirs(path)
    # 如果没有这个文件夹就创建一个
f = open(path+"/xs.txt", "w")

always = True
while always:
    ci = 0
    try:
        html = urlopen(url).read()
        soup = BeautifulSoup(html)
        text = soup.find(attrs={'class': 'chapter'}).text
        print text
        f.write(text.encode("utf-8"))
        if soup.find(id='btnNext').text.encode('utf-8').index('下一章') == 0:
            url = "http://wap.jdxs.net/" + soup.find(id='btnNext')['href']
            print url
        else:
            break
    except IOError:
        ci += 1
        if ci > 10:
            always = False
f.close()

发表于 更新于

https://github.com/ypwhs/creatBarCode

核心代码:

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//
//  ViewController.swift
//  creatBarCode
//
//  Created by 杨培文 on 15/3/13.
//  Copyright (c) 2015年 杨培文. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    var Aji = ["0001101", "0011001", "0010011", "0111101", "0100011",
        "0110001" ,"0101111", "0111011", "0110111", "0001011"]
    var Bji = ["0100111", "0110011", "0011011", "0100001", "0011101",
        "0111001" ,"0000101", "0010001", "0001001", "0010111"]
    var Cji = ["1110010", "1100110", "1101100", "1000010", "1011100",
        "1001110" ,"1010000", "1000100", "1001000", "1110100"]
    var start = "101"
    var fenge = "01010"

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBOutlet weak var numbertext: UITextField!
    @IBOutlet weak var outtext: UITextView!
    @IBAction func creat(sender: AnyObject) {
        var mynumber = numbertext.text

        if countElements(mynumber) != 11{
            outtext.text = "长度有误"
            println(mynumber)
        }else{
            var a = [unichar](count:11,repeatedValue:0x0)
            (mynumber as NSString).getCharacters(&a, range: NSRange(location: 0,length: 11))
            var numbers = [0]
            for i in 0..<11{
                numbers += [Int(a[10-i] - 48)]
            }
            numbers += [6]

            println(a)

            var text = "开始生成\n目标数字:6"+numbertext.text

            //生成检验码
            var c1 = numbers[12]+numbers[10]+numbers[8]
            c1+=numbers[6]+numbers[4]+numbers[2]
            var c2 = numbers[11]+numbers[9]+numbers[7]
            c2+=numbers[5]+numbers[3]+numbers[1]
            var verify = 10-(c1 + c2*3)%10
            if verify == 10{
                verify = 0
            }
            println(verify)
            numbers[0] = verify
            text += String(verify) + "\n"

            //生成条码
            var barcode = start
            barcode += Aji[numbers[11]]
            barcode += Bji[numbers[10]]
            barcode += Bji[numbers[9]]
            barcode += Bji[numbers[8]]
            barcode += Aji[numbers[7]]
            barcode += Aji[numbers[6]]
            barcode += fenge
            barcode += Cji[numbers[5]]
            barcode += Cji[numbers[4]]
            barcode += Cji[numbers[3]]
            barcode += Cji[numbers[2]]
            barcode += Cji[numbers[1]]
            barcode += Cji[numbers[0]]
            barcode += start

            text += "编码后:\n" + start + " "
            text += Aji[numbers[11]] + " "
            text += Bji[numbers[10]] + " "
            text += Bji[numbers[9]] + " "
            text += Bji[numbers[8]] + " "
            text += Aji[numbers[7]] + " "
            text += Aji[numbers[6]] + " "
            text += fenge + " "
            text += Cji[numbers[5]] + " "
            text += Cji[numbers[4]] + " "
            text += Cji[numbers[3]] + " "
            text += Cji[numbers[2]] + " "
            text += Cji[numbers[1]] + " "
            text += Cji[numbers[0]] + " "
            text += start + "\n"

            outtext.text = text

            //开始画图
            var x:CGFloat = 0
            bar.image = UIImage()
            var context = UIGraphicsGetCurrentContext()
            UIGraphicsBeginImageContext(bar.frame.size);
            bar.image?.drawInRect(CGRectMake(0, 0, bar.frame.size.width, bar.frame.size.height))
            CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
            CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 2.0);
            CGContextSetAllowsAntialiasing(UIGraphicsGetCurrentContext(), true);
            CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 0.0, 0.0, 0.0, 1.0); //颜色
            CGContextBeginPath(UIGraphicsGetCurrentContext());

            for i in barcode{
                if i == "1"{
                    var xx = x*2+10
                    CGContextMoveToPoint(UIGraphicsGetCurrentContext(), xx, 0);//起点
                    if (x<3)|((x>6*7+3)&(x<6*7+3+5))|(x>12*7+5+2){
                        CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), xx, 110);//终点
                    }else{
                        CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), xx, 100);//终点
                    }
                    CGContextStrokePath(UIGraphicsGetCurrentContext());
                }
                x += 1
            }
            bar.image=UIGraphicsGetImageFromCurrentImageContext();
            UIGraphicsEndImageContext();

            //修改下面的文字
            var c = "6   "
            c += String(numbers[11])+" "
            c += String(numbers[10])+" "
            c += String(numbers[9])+" "
            c += String(numbers[8])+" "
            c += String(numbers[7])+" "
            c += String(numbers[6])+" "
            c += " "
            c += String(numbers[5])+" "
            c += String(numbers[4])+" "
            c += String(numbers[3])+" "
            c += String(numbers[2])+" "
            c += String(numbers[1])+" "
            c += String(numbers[0])+" "
            codenumber.text = c
        }
    }

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        numbertext.resignFirstResponder()
    }

    @IBOutlet weak var bar: UIImageView!
    @IBOutlet weak var codenumber: UILabel!

}

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<?php
include("config.php");
$username = $_GET['username'];
$con = mysql_connect(MYSQL_IP.':'.MYSQL_PORT,MYSQL_USER,MYSQL_PSWD);
    if (!$con)
    {
        die('Could not connect: ' . mysql_error());
    }else
    {
        mysql_select_db("ypw", $con);
        mysql_query("SET NAMES UTF8");
        $result = mysql_query("SELECT *  FROM `users` WHERE `username` = '$username';");
        $row = mysql_fetch_array($result);
        echo $row['password'];
        mysql_close($con);
    }
?>

http://xxx.com/login.php?username=ypw

发表于 更新于

其中的最大处理器状态可以凭自己的感觉设置,一般来说有电源的情况下可以高一点,用电池的时候可以设置更低,我在35%状态下上网页看电影都是一点都不卡的.如果你需要更高的速度,则可以调到高性能模式.

一般情况下不需要调这个模式,因为发热.

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