atitit Agent CGLIB Dynamic proxy aspectj static proxy differences 1.1. Span style= "font-family:arial; Color: #ff0000; Font-size:10.5pt ">a op agent is divided into static agents and dynamic agents of two major categories, static proxy to ASPECTJ NBSP; spring NBSP;AOP NBSP; 1 1.2. JDK Dynamic agent is the way to simulate the implementation of
Proxy mode: provides a proxy for other objects to control access to this object. The following is an example:
Public class objectimpl implements object {Public void action () {system. out. println ("==========="); system. out. println ("==========="); system. out. println ("this is the proxy class"); system. out. println ("==========="); system. out. println ("==
Java Dynamic proxy and CGLib proxy for IT Ninja Turtles, and cglib for ninja turtles
Test code
ApplicationContext ctx =
In this case, the program can run normally, but if UserDAOImpl implements an interface, the rest will not change.
Public class UserDAOImpl implements UserDAO {
In this case, the program will not run normally and will throw a java. lan
Proxy mode is a common design pattern, and its characteristic is that the proxy class and the delegate class have the same interface, in the concrete implementation, there are static agents and dynamic agents. There is usually an association between the proxy class and the delegate class, and the object of a proxy clas
PC and iPad are in the same LAN
Pc ip: 192.168.1.99
Proxy Software for PC machines (such as tunnelier) connected to the Internet successfully (sock5)
Install the Privoxy software (see the followingArticle)
Note: Change 127.0.0.1: 8118 to 192.168.1.99: 8118.
Now, both the PC and iPad can use the 192.168.1.99: 8118 proxy to access the Internet.
Convert socks
Design Mode 3 static proxy mode, Design Mode Static proxyI. Overview 1. What is the proxy mode?
To hide and protect the target object, a proxy is provided for other objects to control access to the target object.2. What is static proxy mode?
There are two proxy modes:
Stat
Design Mode (11) --- proxy mode, design mode 11 --- proxy
I. digress
This section describes the proxy mode. I personally feel that the proxy mode is very simple and there is almost no difficulty in using it. Therefore, let's simply describe it.
Ii. Definition
Proxy mode: pr
The usual proxy server, which is the forward proxy, is used only for proxy connection requests from the internal network to the Internet, and the client must specify a proxy server and send HTTP requests that would otherwise be sent directly to the Web server to the proxy se
Transferred from: http://blog.csdn.net/m13666368773/article/details/8060481
The concept of a forward proxy
The forward agent, the legendary agent, works like a springboard,
To put it simply,
I am a user, I cannot access a website, but I can access a proxy server
This proxy server, he can access the site that I can't access
So I first connected to the
First, what is a proxy server?
Proxy server is a server between the browser and the Web server, when you surf the Internet through a proxy server, the browser is not directly to the Web server to retrieve the page but to the proxy server to send a request, the proxy server
agent; level 1-LEVEL3 belong to anonymous agent! All anonymous proxies are sometimes called super proxies!
Do not want to let network management (domestic proxy server} or ISP (foreign proxy server) know where I want to go, then your connection request with SSL encryption on the line.
With the anonymous feature plus encrypted connection, invisibility finally practiced!
The software required to make and
Protection proxy
Before and after a method is called, perform some actions.
A dynamic proxy is called a dynamic proxy because its class is created only at runtime.
Logs, connections, transactions,
Java in Java. lang. the reflect package has its own Proxy Support. With this package, you can dynamically create a
A reverse proxy (Reverse proxy) means that a proxy server accepts external connection requests and then forwards the request to a server on the internal network and returns the results obtained from the server to the external request-connected client. At this point, the proxy server behaves as a server.
The reverse
implements UserDAO {
Public void save (){
// TODO Auto-generated method stub
System. out. println ("user saved ");
}
}
In this case, the program will not run normally and will throw a java. lang. ClassCastException
To understand the cause of this situation, you need to understand the implementation principles of Spring AOP.Spring Implementation of AOP relies on JDK dynamic proxy and CGLIB proxy.Below is a brief introduction t
Parse instances in dynamic proxy mode in detail:
1. First, create an interface (there are real methods to be implemented ):
PublicinterfaceSubject {
PublicvoidRequest (); // method to be implemented
}
2. Write a real theme class to implement the subject interface (and implement the method ):
PublicclassRealsubjectImplementsSubject {
PublicvoidRequest () {// method in the implementation Interface
System.Out. Println ("implementation method of real them
1. Mandatory Agent(1) Forcing a proxy is the caller calling the real role directly, without worrying about whether the proxy class exists. The creation of its agent is determined by the real role.(2) Through the real role, to find the role of the agent, and then through the role of proxy, the method of tuning the real role2. Code(1) Abstract class, more than one
A forward proxy is also a legendary proxy. It works like a stepping stone. Simply put, I am a user and cannot access a website, but I can access a proxy server, which can access a website that I cannot access. So I first connect to the proxy server, tell him that I need the content
This blog post, we mainly in the form of class diagram and code to learn about static agents and dynamic agents, focusing on the advantages and disadvantages of each.DefinedProxy pattern is the structural pattern of an object, which provides a proxy object to an object and controls the reference to the original object by the proxy object.ClassificationStatic agents and dynamic proxiesStatic proxyStatic
Java dynamic proxy classes can be divided into two types.Static agents: Created by a programmer or by a specific tool, the source code is automatically generated, and then compiled. Before the program runs, the. class file for the proxy class already exists.Dynamic Agent: When the program is running, it is created dynamically by using the reflection mechanism.First, we have a Java Dynamic
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.