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1.1 Use JS to complete the registration page form prompt and check 1.1.1 requirements: Registering the page before it is a popup dialog is not particularly friendly in the form of a check! You can display the error message after the text box. And when the cursor falls into the text box, the message prompts.1.1.2 Analysis: 1.1.2.1 Technical Analysis:"JS Output" document.getElementById (""). Innerhtml= "HTML code"; document.write ("");"JS Event" Onfocus: Get focus. Onblur: Lose focus.

and more in-depth discussion. Well, today we'll introduce this, next time we continue to learn the common command five: rmdir command.Jerry EducationSource:http://www.cnblogs.com/jerehedu/ Copyright Notice: The copyright of this article belongs to cigarettes DeskJerry EducationSection Technology Co., Ltd. and blog Park are shared, welcome reprint, but without the consent of the author must retain this paragraph, and in the article page obvious location to the original link, otherwise reserves t

, Unixtime int, UserID int.) row format delimited fieldsTerminated by ' \ t ';Parse JSON to get the result and then deposit the rate table:Insert into table rate Select Get_json_object (line, ' $.movie ') as Moive,get_json_object (line, ' $.rate ')As Rate,get_json_object (line, ' $.timestamp ') as-unixtime,get_json_object (line, ' $.uid ') as UserIDFrom Rat_json;(3) Use Transform+python to convert Unixtime to weekdayEdit a Python script file firstVI weekday_mapper.py#!/bin/pythonImport SysImport

1. Introduction to package Management2. RPM Command Management (Redhat Package Manager)3. Yum Online Installation4. Source Package Management5. Script installation Package5.1 Preparatory work5.1.1 Turn off RPM package installation of httpd and MySQL/usr/local/apache2/bin/apachectl stoprm-rf/usr/local/apache2/Service httpd StopService MySQL StopService Mysqld Stop5.1.2 to ensure proper use of Yum sourcesYum List5.1.3 Turn off SELinux and firewalls　　　　　　Linux Software Installation Management-CentO

, followed by a letter and any character of any length, in the/etc directory;Ls-d/etc/[^a-z][a-z]*Exercise 4: Copy all files or directories that start with M and that end with a non-digit to the/tmp/magedu.com directory, in the/etc directory;Cp-r/etc/m*[^0-9]/tmp/magedu.com/Exercise 5: Copy the/usr/share/man directory, all the files or directories that begin with man, followed by a number, to the/tmp/man/directory;Cp-r/usr/share/man/man[0-9]/tmp/man/Exercise 6: Copy all files or directories that

The Linux operating system is a multi-user operating system that allows multiple users to log on to the system and use resources at the same time. Each user's files, processes, tasks, and work environment are differentiated according to the account, making every user work undisturbed1. Files to save user information:/etc/passwd2. Save the user password file:/etc/shadow3. Save the user group's files:/etc/group4. Save the user group password file:/etc/gshadow5. User profile:/etc/default/useradd6.l

　　reference book:"Intel microprocessors"　　Table 1 Default 16-bit segment + offset addressing combination Paragraph Offset amount Special purpose Cs Ip Instruction Address Ss SP or BP Stack Address Ds BX, DI, SI, 8-bit or 16-digit Data address Es Di for string instructions String Destination Address Table 2 default 32-bit segment + offset addressing combination

this new temporary directory or to a new site. 3, inconvenient directory mobile , using ln-slink file enterprise face questionDescribe the differences between soft links and hard links under Linux1) By default without parameters , the ln command creates a hard link , and the ln command with the-s parameter creates a soft link. 2) The hard link file is the same as the Inode node number of the source file , and the Inode node number of the soft link file is different from the source file. 3) The

Diagram of two-dimensional arraySecond, plot dynamic creation of two-dimensional arraysThree, Yang Hui triangle exercises:1 ImportJava.util.Scanner;2 classarray2demo{3 //Realizing the Yang Hui Triangle4 Public Static voidMain (string[] args) {5 //Creating a Keyboard entry object6Scanner sc=NewScanner (system.in);7System.out.println ("Please enter data:");8 intn=sc.nextint ();9 Ten //defining a two-dimensional array One int[] arr=New int[n][n]; A

Add View Object 3.3.4 creating templates, writing HTML codeWe create the index.html under Resources/templates, the code is as follows:Start debugging, in Browser input: http://localhost:8080/The effect is as follows:Related Code github:https://github.com/vipstone/springboot-example.gitIv. referencesThymeleaf Official Document Thymeleaf:https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.htmlThymeleaf Official documents Spring + thymeleaf:https://www.thymeleaf.org/doc/tutorials/3.0/

helloremote implementation callbacks@Component Public class Implements helloremote{ @Override public string Hello (@RequestParam (value = "Name ") string name) { return "Hello" +name+ ", this messge send failed"; }}3. Add Fallback propertyHelloRemoteadds the specified fallback class to the class, returning the contents of the fallback class when the service is fused.@FeignClient (name= "Spring-cloud-producer", fallback = Helloremotehystrix. Class)publicinterface helloremote

-core-1.5.2.jar, so in this project, we are going to learn how to use the integrated Hystrix in the feign.Use the Fallback property in the @feignclient annotation to specify the callback class@FeignClient(value = "compute-service", fallback = ComputeClientHystrix.class)public interface ComputeClient { @RequestMapping(method = RequestMethod.GET, value = "/add") Integer add(@RequestParam(value = "a") Integer a, @RequestParam(value = "b") Integer b);}Create the callback class Computeclienthys

Ubuntu, such as Adobe Flash Player, MP3 decoder, DVD support, common video format support, Rar decompression, Java browser plugin, etc., we can install Ubuntu-restricted-extras virtual packages, one-time installation of these commonly used copyright restricted programs.The installation method is very simple, search Ubuntu-restricted-extras in Ubuntu Software Center, click Use this source, wait for Ubuntu Software Center to complete the changes and click Install.Now that we have completed the ba

First, BOM modelThe BOM model, also known as the Document Object model, contains browser-related properties and methods such as actions, forward and backward buttons, control of the address bar, closing of the browser window, opening a new window, and so on. Browser It contains several main objects.1. Window objectThe Window object refers to the entire Windows object, which can be manipulated by manipulating the properties and methods of the Window object, such as opening and closing a window.Pr

() { new classpathxmlapplicationcontext ("Spring-context.xml"); = Context.getbean ("Propbean", String. Class); Assert.asserttrue (Stringutils.equals ("admin", prop));}Note:1) Spring uses "${property name}" to represent property values, unlike spel using "#{spel expression}"2) When the same attribute value exists in multiple property files, the latter overrides the former3) Support annotation mode, using the same way as spel annotation, such as: @Value ("${password}")Reference:Fifth 5

Learning Links:Http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/ 0014317799226173f45ce40636141b6abc8424e12b5fb27000Generator things are not very difficult, the main note under the list of the inside Listwy[-1] represents the last element of the listThen the problem is difficult, I start to feel the mindPracticeThe Yang Hui triangle is defined as follows: 1 / 1 1 / \ / 1 2 1 / \ / \ / 1 3 3 1 / \ / \ / \

section int b = 0;while ((b = In.read ())! =-1) {Os.write (b);} Os.flush (); Os.close (); In.close ();} catch (FileNotFoundException e) {e.printstacktrace ();}} Return "Success";}The second type: optimized upload fileIdea: Using the parser, greatly improve the upload speedThe difference from method one is only the controller@RequestMapping ("/upload2") public String upload2 (httpservletrequest request, httpservletresponse response) throws IllegalStateException, IOException {//Create a generic m

The binary conversion problem in the interview question, will be a binary number, starting from a bit, n-bit conversion, the program is as follows:1 /************************************************************************/2 /*function: Realize the conversion of binary number x, p is the number of conversion bits, n is the conversion length. Example x=0b0001 0001,p=4,n=3 after conversion x=0b0110 00013 / * ZL4 /* Date: 2018-04-08 14:385 /**********************************************************

@requestmapping ("Test") Public classTestController {@Autowired @Qualifier ("Queuedestination") PrivateDestination Destination; @AutowiredPrivateProducerservice Producerservice; @RequestMapping ("First") PublicString First () {Producerservice.sendmessage (destination,"Hello, now is:" +NewDate (). toLocaleString ()); return"/test/first"; } }　　The next step is to enable the WebLogic server, enter its console, define a JNDI data source called "Jdbc/mysql", and then deploy the project to

OS module, together with a look at the common methods, that is, what functions or functions.1, OS.GETCWD ()Import os>>> os.getcwd ()'c:\\users\\tom\\appdata\\local\\programs\\python\\ Python36'Returns the directory of native-installed python.2, Os.chdir ()Change the directory for native install Python.3, Os.curdirReturns the current directory.4, Os.pardirReturns the previous level directory of the current directory.5, Os.makedirs ()6, Os.mkdir ()7, Os.listdir ()8, Os.rmdir ()9, Os.remove ()10, O