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var cookieutil = {//Get cookie value by name such as Cookieutil.set ("Data", "NAME=NICBOOK=PAGEXOFFSET%20JS"); Alert (COOKIEUTIL.G ET ("data")); Get:function (name) {var cookiename = encodeURIComponent (name) + "=", Cookiestart =

First of all, why crawl is the integration of inject,generate,fetch,parse,update (the specific meaning and function of the command will be described in subsequent articles), we open the nutch_home/runtime/local/bin/ Crawl I paste the main code down #

Python MySQL for database table change and query, pythonmysql Python connects to MySQL for database table change and query: Python mysql insert delete query: #!/usr/bin/python import MySQLdb def doInsert(cursor,db): #insert # Prepare SQL query

Nutch Web page Crawl speed optimizationHere is the things that could potentially slow down fetching1) DNS Setup2) The number of crawlers you has, too many, too few.3) Bandwidth Limitations4) Number of threads per host (politeness)5) uneven

Because the Web page form is submitted to itself, the callback function is completed, so it is not possible to use post for multiple page values by default.1. Using querystring, such as ...? id=1; Response. Redirect () ....The transferred value is

File concurrency (log processing)--Queue--redis+log4netAbout RedisRedis is an open source, a distributed NoSQL database system that uses the C language for "key/value" type data, characterized by high performance, persistent storage, and adapting to

1. Download and install the Memcache server sideOfficial website, libevent:http://www.monkey.org/~provos/libevent/,memcache:http://memcached.org/1. Install Libevent first. This thing needs to be configured with an installation path, that

NullPointerException org. apache. commons. digester. Digester. getXMLReader (Digester. java: 1058), father of java Http://pwu-developer.blogspot.com/2010/01/nullpointerexception.html MavenIs great build tool making it easy to fetch all the library

HQL: Fully Object-oriented queryexecution order of SQL :1. from2.Where to filter the underlying data The difference between where and having : 1. different order 2.where filtering underlying data 3. filtering aggregate functions3.Group by4.Select5.

Flask is a lightweight Web application framework written using Python. It is based on Werkzeug WSGI Toolkit and JINJA2 template engine. Flask uses BSD licensing.flask is based on Python's flexibility and provides a simple template for web

MySQL database instance Parameter comparison script, mysql instance How to compare the parameters of two MySQL instances is usually the requirement in production. Recently, a python script has been written to achieve this

The PHP Manual provides ready-made functions:Getallheaders(PHP 4, PHP 5)Getallheaders-Fetch all HTTP request headersDescriptionArray getallheaders (void)Fetches all HTTP headers from the current request.This function is an alias for

With the previous section PHP PDO is simple to use (i) to understand the creation of links and simple operations.There are three ways to execute SQL statements via PDO: Exec, query, prepared statement1. The exec () function is suitable for

PHP Singleton mode definition and usage instance details, php instance details This document describes how to define and use the PHP Singleton mode. We will share this with you for your reference. The details are as follows: First, we will briefly

Python uses MySQLdb to access the mysql database, mysqldbmysql This example describes how to access the mysql database using MySQLdb in python. Share it with you for your reference. The details are as follows: #!/usr/bin/pythonimport MySQLdbdef

"reproduced in http://blog.163.com/user_zhaopeng/blog/static/16602270820122105731329/"1. It is not possible to derive a class that specifies the final modifier of the class with the final modifier.If a class is specified as final, all methods of the

$out = "" and then $out. = with direct $out = What's the difference there are examples below PHP Code $fp = @fsockopen ($whoisserver, $port, $errno, $errstr, $timeout) or Die ("Socket Error". $errno. " - " . $ERRSTR); Fputs ($FP,

The performance test simulates various normal, peak, and abnormal load conditions through automated test tools to test the system's performance indicators. And the performance of the app is getting more and more attention, let's introduce the

-- Drop function top100cur (refcursor); Create Function top100cur (refcursor) returns refcursor as $ beginopen $1 for select * From person limit 100; return $1; end $ language plpgsql; ---------- test cursor ----------- select top100cur ('abc'); --

Vim chkweb.sh#!/bin/Bash#web=("www.hofan.cn" "ums.hofan.cn" "i.hofan.cn" "192.168.51.6") Chkloop=3LOG=/var/log/Chkweb.logCheckrs () {#检测次数 local I=1 while[$I-le $CHKLOOP]; Do ifCurl--connect-timeout1http//$ &>/dev/null;thenReturn0