(" exception notification "+e);}@Around Surround Notifications@Around ("Anymethod ()") PublicObject Dobasicprofiling (Proceedingjoinpoint pjp) throws throwable{Object result=NULL; if(true){//determine if the user has permissionsSystem. out. println ("Entry Method"); Result=pjp.proceed ();//This method is similar to DofilterSystem. out. println ("Exit Method"); }returnresult;}Attention:1, the action method of the
class load time, and at run time. Spring, like other pure Java AOP frameworks, completes weaving at run time.Notification Type:> Pre-notification (before advice): A notification that is executed before a connection point, but this notification does not block the execution process before the connection point (unless it throws an exception).> post Notification (after returning advice): A notification that is executed after a connection point is completed normally: for example, a method does not t
writing a program. This description may be abstract. Next, we will discuss the analysis in detail.
Zip code
The zip code is relatively simple. It is a six-digit number and the first digit cannot be 0. Therefore, the expression can be:
[1-9][0-9]{5}
This expression can be used to verify whether the input is a zip code, for example:
public static Pattern ZIP_CODE_PATTERN = Pattern.compile( "[1-9][0-9]{5}");public static boolean isZipCode(String text) { return ZIP_CODE_PATTERN.matcher(te
property: Sets the minimum width of the element.(4) Min-height property: Sets the minimum height of the element.14. Floating surround Content: The Float property can move elements to the left or right. There are three values for the Float property: left, right, none. The HTML code for the floating label must appear before any content enclosing the floating element. The browser surrounds the text around the floating element but does not
. Notifications: Actions performed on the connection point, such as pre-notification, post-notification, exception notification, surround notification, and final notification.E. Weaving: Connecting facets to other application types or objects. The process is completed at run time.F. Target object: Target objectG. AOP Proxy: The spring container dynamically creates an AOP proxy object for each target object.Methods that are used by the object to perfor
{ session.close ();//Close Connection }}General CRUD requires these steps: Commit a transaction, roll back a transaction On error, close the connectionThis repetitive, non-business-logic code is not done with AOP.When you manage transactions through AOP, you only need to
Set Curd as Tangency point
Write a surround notification at the tangent point and several steps to implement a transaction in a
=joinpoint.getsignature (). GetName (); System.out.println ("The method" + MethodName + "occurs with" +ex); } /** Surround notifications need to pass a proceedingjoinpoint parameter * Surround notification is similar to the whole process of dynamic agents; proceedingjoinpoint type parameters can decide whether to execute the target method * Surround The notifi
way. In this case, setting vertical-align is often ineffective.
3. The alignment of an image is to align the bottom of the image, that is, the bottom of the image with the default baseline of the row box. The alignment is based on the bottom. The reason for affecting image alignment is the height, padding, and border size of the image.
Text elements, such as
4. the elements are actually removed from the normal Document Stream after floating (so the height will collapse and the parent contain
= "MYPOINTCUT3"/ > * Applications: such as freeing resources 3. Post notification * method. NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP * write a specific configuration in the configuration file: aop:after-returning method = "afterreturning" Pointcut-ref = "MyPointcut2" /> * Application: You can modify the return value of a method 4. Exception throw notification * notification after an exception is thrown Span style= "COLOR: #808080" >* write a specific configurati
;Importorg.aspectj.lang.annotation.AfterThrowing;ImportOrg.aspectj.lang.annotation.Around;ImportOrg.aspectj.lang.annotation.Aspect;ImportOrg.aspectj.lang.annotation.Before;ImportOrg.springframework.core.annotation.Order;Importorg.springframework.stereotype.Component;//declare this class as a tangent: you need to put the class in an IOC container, declared as a tangent plane@Order (2) @Aspect @component Public classLoggingaspect {/*** Surround notifica
AOP:Joinpoint (Connection point): The so-called connection point refers to the points that are intercepted. In spring, these points refer to methods because spring only supports connection points for method types (points that can be cut in) Pointcut (pointcuts): The so-called pointcut refers to the definition of which joinpoint we want to intercept. (points that have been cut) Advice (notification/ enhancement): The so-called notification refers to the interception to Joinpoint after the thing
freely from the Python perspective to the Java Perspective view. In the Java package, a striking little red fork marks all python files that contain syntax errors.Figure 7. Pydev Project Syntax error hints
Source Code Editing assistant (Content assistents)
The source editing assistant (Content assistents, hereinafter referred to as CA), as the name implies, is used to help developers to edit the source program, which provides many convenient and practical functions to guide the de
function Shortcut keysText Editor overwrite toggle InsertText Editor Roll Line ctrl+↑The text editor scrolls the line ctrl+↓Filescope function Shortcut keysGlobal Save Ctrl+xCtrl+sGlobal Print Ctrl+pGlobal Shutdown CTRL+F4Global Save All Ctrl+shift+sGlobal all off CTRL+SHIFT+F4Global Properties Alt+enterGlobal New CTRL + NProjectscope function Shortcut keysGlobal All Build Ctrl+bSourcescope function Shortcut keysJava Editor Formatting ctrl+shift+fJava Editor Uncomment ctrl+\Java Editor Comment
implemented uniformly using \{-. This is probably not the same as ignoring the priority quantifier is not used.Surround and cure GroupsVim also supports the function of surround and cure grouping, powerful, like a look at the interpretation of the Yurii, please refer to the "Proficient regular expression" book.
vim
perl
meaning
\@=
(? =
order look around
\@!
(?!
logging the methods of all classes under the Com.spring.service package in Testaspect is a advice. Where a "slice" can contain multiple "Advice", such as Testaspect.There are 5 types of advice: pre-notification (before advice), post-notification (after advice), post-return notification (after return advice), Surround notification (Around advice), throw exception notification (after throwing advice)Notification execution Order: pre-notification →
void Helloafterreturning () {System.out.println ("Return to post Notification execution")@AfterThrowing ("Performance ()")Public void Helloafterthrowing () {System.out.println ("Exception post Notification Execution")} }create surround notifications with annotationsPackage xxx;@AspectPublic class audience{//Tangent Point@PointCut ("Execution (* Package. Package. Class. Method (..))")Public void Performance () {}//is used to host the tangency p
pure Java AOP frameworks, completes weaving at run time.Type of notification:Pre-notification (before advice): A notification that is executed before a connection point, but this notification does not prevent execution before the connection point (unless it throws an exception).Notification after return (after returning advice): A notification that is executed after a connection point is completed normally: for example, a method does not throw any exceptions and returns normally.Notification af
: Specifies a pointcut expression or a named pointcut;ArgNames: synonymous with schema mode configuration;2.5, Surround Notice: Use the @around Note statement under the Org.aspectj.lang.annotation package; @Around ( value= "pointcut expression or named Pointcut", argnames= "argument list parameter name") Value: Specifies a pointcut expression or a named pointcut;ArgNames: synonymous with schema mode configuration;2.6 IntroductionThe intr
quantifiers unlike Perl's *? +? ?? Instead, it is implemented uniformly using \{-. This is probably not the same as ignoring the priority quantifier is not used.Surround and cure GroupsVim also supports the function of surround and cure grouping, powerful, like a look at the interpretation of the Yurii, please refer to the "Proficient regular expression" book.
vim
perl
meaning
\@=
(? =
order l
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