springaop LearningAuthor:luojie
1. Basic Concepts in AOP
AOPthe generic term, notSpring Javaunique. I'm sorry .AOPthe terminology is not particularly intuitive. But if you letSpring Javato define your own terminology may be more confusing. Aspect (Aspect): modularity of concerns that are distributed horizontally across multiple objects. In enterprise applications, transaction management is a typical crosscutting concern. The Springjava is implemented as an advisor or Interceptor
If more than one notification is executed at the same connection point, how is the order of execution determined?There are two cases in which the order of execution in the same slice is notified, and the order in which the notifications are executed in different slices.1. Order of notification execution in the same slice1) Pre-notification/Surround Notification proceed method before section2) method of being notified3) post notification/
method throws an exception exits.
final notification (after (finally) advice): A notification that is executed when a connection point exits (whether it is a normal return or an unexpected exit).
Surround Notification (Around Advice): A notification that surrounds a connection point, such as a method call. This is the most powerful type of notification. Surround notifications can accomplish custom
* number denotes all types. 3. Package Name: Indicates the package name that needs to be intercepted, and the following two periods represent all the child packages of the current package and the current package, Com.sample.service.impl the package, and the descendants of all classes. 4, the second * Number: denotes the class name, the * number denotes all classes. 5, * (..): The last asterisk denotes the method name, the * number denotes all methods, the following parentheses indicate the para
entry point refers to which joinpoint we want to intercept the definition.3.Advice (Notification/enhancement): The so-called notification refers to the interception to Joinpoint after the thing to do is to inform. Notification is divided into pre-notification, post-notification, exception notification, final notification, surround notification (section to complete the function)4.Introduction (Introduction): Introduction is a special kind of notificat
voidMain (string[] args)throwsException {ApplicationContext context=NewClasspathxmlapplicationcontext ("Applicationcontext.xml"); Exceptiontest Bean= Context.getbean ("Test", exceptiontest.class); Bean.add (); } Public voidAdd ()throwsException {Throw NewException ("Error"); }}
Final Run Result:
The configuration method for the spring configuration file is the same as the predecessor enhancement and the post-strong configuration method, which is no longer
quantization uses unequal quantization intervals
The encoding process is to encode the quantified signal into a binary code group for output.
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Main differences:
Because they have different quantization intervals, the number of digits of the last binary encoding is different.
Other differences:
In PCM, corresponding technologies are sometimes used to reduce the data rate of digital signal sources, facilitating storage and data tran
Recently my wife gave me a death order, let me the computer's "broken speakers" to replace, she really can not endure to listen to music without surround sound, watching movies without overweight bass, play no game stereo sound, singing KTV simply do not sound ... Vulgar speech: "Head can be broken, blood flow, wife orders can not be lost." "Yes, this time must be excellent to complete the task of wife confessed!" Can change the speaker to spend money
AntiVirusDescription: Norton Anti-Virus scans your files and emails to check for viruses.Devldr32.exeProcess files: Devldr32 or Devldr32.exeProcess name: Create Device LoaderDescription: Creative Device loader belongs to the Create SoundBlaster driver.Directcd.exeProcess files: DirectCD or Directcd.exeProcess Name: Adaptec DirectCDDescription: Adaptec DirectCD is a File Manager-style interface that burns files to CD-ROM software.Dreamweaver.exeProcess files: Dreamweaver or Dreamweaver.exeProces
Spring 3 for beginners of Java ssh, sshspring
In this article, I learned two ways of dependency injection: Set Value injection and construct injection.
In our previous thinking, if we call a class, we need to manually instantiate it. When we create a called job that does not need to be completed, this is the control reversal, when the called instance process is completed by Spring and injected into the caller, this is dependency injection.
1. Learn how to set value injection first:
We will first
System-product-Name :~ /$ LsusbBus 005 device 001: Id 1d6b: 0001 Linux Foundation 1.1 root HubBus 004 device 001: Id 1d6b: 0001 Linux Foundation 1.1 root HubBus 003 device 002: Id 046d: c05a Logitech, Inc. Optical Mouse M90Bus 003 device 001: Id 1d6b: 0001 Linux Foundation 1.1 root HubBus 002 device 002: Id 046d: c31d Logitech, Inc.Bus 002 device 001: Id 1d6b: 0001 Linux Foundation 1.1 root HubBus 001 devic
No words today, linux14.04 system, using Logitech c270 camera. Found no response in plug-in, System version:[Email protected]:~/downloads$ uname-alinux lenovomyc3.13. 0--generic #:£ º x86_64 x86_64 x86_64 Gnu/linuxLooked for a morning UVC drive, lunch did not eat. Eventually!!! It's a test camera program. Cheese just had a problem.Download Luvcview, run, normal work[Email protected]:~/downloads$ sudo apt-GetInstall luvcviewreading Package lists ... D
. It seems that everyone's hands are not hygienic (they have no face in front of the girl ).
6. Drivers occupy system resources. Like the driver of Logitech, it not only occupies memory, but also reduces the game speed. Fortunately, it is not as obvious as Logitech.(We recommend that you uninstall the driver after setting it) However, it is not useless, and its performance is strong, surpassing G5 and IO1.
Put dudu on the homepage! It is related to the health of our programmers!
Today, it was raining in Shanghai, and the sky was gloomy, so my shoulders and wrists began to ache. As the program knew, the keyboard and mouse were two items that hurt my body, since I wrote the program, I used N keyboard and mouse, but I still hurt my hand. I always wanted to find a good one, but it didn't work. Health was the first. If there was no health, we would have nothing to do! After all, no one wants to fall i
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Avengine. exeAvengine. EXE is part of the Panda Antivirus panda guard anti-virus package to protect your computer from cyberattacks.
Avgserv.exeAvgserv.exe is an AVG AntiVirus network security program. It is used to protect your computer security in real time.
Avgw.exeAvgw.exe is part of grisoft's network security component to protect the security of your computer. Protects against viruses, spyware, worms, and Trojans.
Avpcc.exeAvpcc.exe is part of the Kaspersky Anti-Virus package to protect y
.
Avengine. exeAvengine. EXE is part of the Panda Antivirus panda guard anti-virus package to protect your computer from cyberattacks.
Avgserv.exeAvgserv.exe is an AVG AntiVirus network security program. It is used to protect your computer security in real time.
Avgw.exeAvgw.exe is part of grisoft's network security component to protect the security of your computer. Protects against viruses, spyware, worms, and Trojans.
Avpcc.exeAvpcc.exe is part of the Kaspersky Anti-Virus package to protect y
drivers or system services.
Solution: Please refer to the general solution-related items described earlier for troubleshooting.
Instance 6: This blue screen information appears when you click the "set" tab of "show properties ".
"VGA. DLL file information. The cause of this problem is that pcAnywhere version 9.0 or 10.0 is installed. Uninstall and reinstall pcAnywhere, and then start the software, click "tool à application options à host operation" and change "host video mode" to "compatible ".
applications, as do applet. I have used a Java product called Memorex expressit. Its UI is very ugly and has many defects. I have also used the Logitech I/O pen support software (written in. net). It runs smoothly and looks pretty, in stark contrast to Memorex expressit. You may say that Memorex programmers lack experience, but Logitech is just a small running application that does not require any hard wor
of each product line consistent, so that they can be inherited from the same abstract factory.
For java, most of the abstract factory patterns you can see are as follows:
--- There are a bunch of factory methods in it, and each factory method returns some type of object.
For example, the factory can produce mouse and keyboard. Then, the object of the abstract factory implementation class (a specific subclass of it) can produce the mouse
And keyboard, but maybe Factory A produces the
Chapter 2: Installation Guide
2.1 preparations before installation1. Collect System Information: to smoothly install and set up a Linux system, you must record the following information for use during system installation:Hard Disk: quantity, capacity, and type;Memory: The amount of memory that your computer has installed;CD-ROM: interface type (IDE, SCSI );Scsicard: card model;NIC: the model of the NIC;Mouse: mouse type (serial port, PS/2, bus type), Protocol (Microsoft,
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