JDK dynamic proxy ProxyGenerator generates the byte code file parsing of the proxy class, And JDK ProxyGenerator
Through the previous analysis, we know that the Proxy class is generated through the ProxyClassFactory factory of the Proxy class. This
I haven't pasted the complete code for a long time before the introduction in section 15th. In fact, I think the first 14 sections are basic things. Let's first recall what we learned. At the beginning, I mainly wanted to let everyone understand
I. Differences between dynamic proxy and static proxy. (1) The Proxy class code is fixed and won't be huge because of the increasing size of the business; (2) AOP programming can be implemented, which cannot be implemented by the static Proxy; (3)
Proxy design modeDefinition: Provides a proxy for other objects to control access to this object.The structure of the proxy mode is as shown.Dynamic Proxy usageThe Java dynamic Agent mechanism implements the design concept of proxy mode in a clever
Proxy mode provides a proxy for other objects to control access to this object, mediations, which can remove feature services or add additional services 1. Common agentsRemote agents: provide local area network representative objects for different
1. Catching ExceptionsWhen our program encounters an exception, the program is terminated.If we do not want the program to be terminated, it is very simple to put a block of code with the possibility of an exception in the Try statement, and then
In the Java platform, the role of implementing an asynchronous call has the following three roles:Caller Pickup Voucher Real DataA caller returns a pickup voucher when it calls a time-consuming operation and cannot return data immediately. And then
Http://www.cnblogs.com/flyoung2008/archive/2013/08/11/3251148.html
Agent design mode
Definition: Provides a proxy for other objects to control access to this object.
The structure of the proxy pattern is shown in the following illustration.
Reprint Please specify source: http://blog.csdn.net/linxdcn/article/details/73350812 1 Preface
When Tomcat starts, the Server.xml file is read to create the server, Service, Connector, Engine, Host, Context, wrapper and other components, the
Java Dynamic Agent Deep learning,I. Related classes and their methods:Java.lang.reflect.Proxy,Proxy provides a static method for creating dynamic proxy classes and instances.Newproxyinstance ()Returns a proxy class instance of a specified interface
Dynamic proxy class Principle (example code see Anatomy of the Java Reflection Mechanism (iii))A) understand the dynamic Agent sample process aboveA) understand the dynamic Agent sample process aboveb) Analysis of class source code for Proxy
Recently saw spring dynamic agent, grilled to the depths to see when proxy.newproxyinstance (ClassLoader, proxiedinterfaces, this); see this sentence, suddenly more confused force, Still didn't understand the invocation of the Invoke method, and
The main API classes are:
Proxy.newproxyinstance
public static Object newproxyinstance (ClassLoader loader,Class[] interfaces,Invocationhandler h)Throws IllegalArgumentExceptionReturns a proxy class instance of the specified interface that can
Agent design mode
Definition: Provides a proxy for other objects to control access to this object.
The structure of the proxy pattern is shown in the following illustration.
Dynamic proxy Use
The Java dynamic proxy mechanism realizes the design
Design pattern Three: Proxy mode--Introduction to how JDK is implemented
Proxy mode is one of the behavioral patterns, which controls access to other objects and acts as an intermediary.
Agent Mode core role: Real role, Agent role;
There are two
Android Frameworks layer provides hardware services, Android system app can call these hardware services, so as to complete the hardware control, to achieve the desired function. Next, this article provides the Java Interface Hardware service for
I. Class Structure
The entire process of methodbeforeadvice is roughly the dynamic proxy interfaces invocationhandler and proxy provided by JDK.
So first, we will discuss how dynamic proxies are used here.
1. Obtain the class dynamically generated
Android from hardware to application: Step by Step 5-add hardware services to the Frameworks Layer
The Android Frameworks layer provides hardware services. Android apps can call these hardware services to implement hardware control and functions.
In the article "HDFs Source code Analysis Editlog Get the edit log input stream," we learned more about how to get the edit log input stream editloginputstream. After we get the edit log input stream, is it time to get the data from the input stream
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