new relic java agent

, ...}); //get The constructor object from the generated class object by reflection //create A dynamic proxy class instance from a constructor object interface Proxy = (Interface) constructor.newinstance (new object[] {handler}); The actual use of the process is more simple, because the static method of Proxy Newproxyinstance has encapsulated steps 2 through 4 of the process, so the simplified process is as followsListing 4. Simplified

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 interface implementationLet's take a look at the source code of the Proxy implementation class ($Proxy 0) and the flow of t

implementation and principle of JDK dynamic agentTwo cyanEmail: [Email protected] Weibo: HTTP://WEIBO.COM/XTFGGEFDynamic agent, sounds very big on the technology, in the Java application of a wide range, especially in the hibernate and spring of the two frameworks, in the AOP, permissions control, transaction management and other aspects of the implementation of dynamic agents. The JDK itself implements dyn

CglibProxy factory = new CglibProxy(customerService); // 2.通过CglibProxy完成代理对象创建 UserService userServiceProxy = (UserService)factory.createProxy(); userServiceProxy.saveUser(new User("1","张三")); }}Generate the proxy object bytecode, and decompile the JD.exe as followsimport java.lang.reflect.Method;import org.springframework.cglib.core.ReflectUtils;import org.springframework.cglib.

different control strategies, which gives more flexibility in design. such as proxy objects can encapsulate some internal processing logic (some new features such as access control, logging, caching, authorization, etc.).The Java dynamic agent mechanism is a clever way to practice the design concept of the proxy mode in near perfect fashion.2, the traditional pr

When we learn spring, we know that spring has two main ideas, one is the IOC, the other is AOP, and for IOC, dependency injection doesn't have to be said, and for spring's core AOP, we not only need to know how to satisfy our function through AOP, What we need to learn is how the underlying is a principle, and the principle of AOP is the dynamic agent mechanism of Java, so this essay is a review of the dyna

When we learn spring, we know that spring has two main ideas, one is the IOC, the other is AOP, and for IOC, dependency injection doesn't have to be said, and for spring's core AOP, we not only need to know how to satisfy our function through AOP, What we need to learn is how the underlying is a principle, and the principle of AOP is the dynamic agent mechanism of Java, so this essay is a review of the dyna

bandwidth.Advantages and Disadvantages Advantages :1, a dynamic proxy class is more simple, can solve the problem of creating multiple static agents, to avoid repeated redundant code2, call the target code, will be in the method "runtime" dynamic join, determine what type you are, only adjust who, flexibleDisadvantages :1, the system is flexible, but compared to the efficiency is reduced, a little slower than the static agent2, dynamic agent than sta

Here the content is more complex, to achieve is toarbitrary interface, for any specified method, and for any specified proxy typeThe agent, it is more realistic to simulate the dynamic agent mechanism of Java Virtual machinelist the relationship between the classes and interfaces involved, so that we could learn. 1, Invocationhandler interface, used to handle the

implementation class that is forwarded to the Invocationhandler interface.(---All method calls to the dynamic proxy is forwarded InvocationHandler to this implementation)Import Java.lang.reflect.proxy;public class Client {public static void main (string[] args) {//My interface implementation The proxy object MyInterface Myinterfaceimpl = new Myinterfaceimpl ();//Processor Business proxy class Businesshandler handler =

When we learn spring, we know that spring has two main ideas, one is the IOC, the other is AOP, and for IOC, dependency injection doesn't have to be said, and for spring's core AOP, we not only need to know how to satisfy our function through AOP, What we need to learn is how the underlying is a principle, and the principle of AOP is the dynamic agent mechanism of Java, so this essay is a review of the dyna

(); System.out.println ("After transaction processing"); } @Override Public voidUpdatecount () {System.out.println ("Before transaction processing"); //the method of invoking the delegate class; Countimpl.updatecount (); System.out.println ("After transaction processing"); } } As shown in the code: Define a proxy class to handle the transaction of the delegate class Public class Testcount { publicstaticvoid main (string[] args) { new

{ System.out.println ("things start"); Proxy.invokesuper (obj, args); System.out.println ("End of Thing"); return null; } } 4, Testcglib.java Package net.battier.test; Import NET.BATTIER.DAO.IMPL.BOOKFACADEIMPL1; Import Net.battier.proxy.BookFacadeCglib; Public class Testcglib { public static void Main (string[] args) { Bookfacadecglib cglib=New Bookfacadecglib (); BOOKFACADEIMPL1 book

commonReal topic classes and interfaces as in the previous example, no longer postedJavaassist 's dynamic agent has two implementations, one using a proxy factory and one using dynamic java code to generate bytecodeThis is where the code is directly posted:Picture upload failed ~ ~ ~Ps: The above instance method handles the class in the logical processing class , the Real topic class and interface are the

15.1 Dynamic agentsAfter learning the spring framework, the spring framework has one of the core ideas, AOP, (aspact-oriented-programming-oriented slicing) and the principle of AOP is the dynamic agent mechanism of Java, in the dynamic agent mechanism of Java, There are two important classes or interfaces, one is Invoc

(), Myinvocationhandler); return proxyobject;}}3.6 Testing Class TestPackage com.tgb.reflect.aop;/** * Testing class * * @author Wangzhipeng * */public class Test {public static void main (Strin G[] (args) {//Create an original Zhansan (implement the Person interface) object as Targetperson Zhansan = new Zhansan ();// Proxy object for generating Zhansan object (target) with Agent factory person Proxyzhan

inherited an interface, the interface defines the Say () methodAdd the name of the current object to the TestbeansAs follows:ApplicationContext CTX = new classpathxmlapplicationcontext ("Test.xml");Testinter test= (Testinter) Ctx.getbean ("test");System. out. println (Test.getclass (). Getsimplename ());System. out. println ("Super Class is" +test.getclass (). Getsuperclass ());Test.say ();Output:$Proxy 0Super class is Class Java.lang.reflect.ProxyDo

Java Dynamic Agent One--the use of dynamic class proxy1. What is a dynamic agent?A: Dynamic agents can provide access to another object while hiding the exact facts of the actual object. The agent generally implements the interface of the actual object it represents. The agent