Java| Java Agent Demo

 

   
    
   
   
    
     package com.xifj.agent.demo;
    
   

   
    
   
   
    
     import java.lang.instrument.Instrumentation;
    
   

   
    
   
   
     
    
   

   
    
   
   
    
     
    
   

   
    
   
   
    
     public 
     class 
     agentDemo {
    
   

   
    
   
   
        
     
    
   

   
    
   
   
        
     public 
     static 
     void 
     premain
     (String agentArgs, Instrumentation inst) {
    
   

   
    
   
   
    
             System.out.println(
     "=========premain方法执行1========");
    
   

   
    
   
   
    
             System.out.println(agentArgs);
    
   

   
    
   
   
    
         }
    
   

   
    
   
   
     
    
   

   
    
   
   
        
     
    
   

   
    
   
   
        
     public 
     static 
     void 
     premain
     (String agentArgs) {
    
   

   
    
   
   
    
             System.out.println(
     "=========premain方法执行2========");
    
   

   
    
   
   
    
             System.out.println(agentArgs);
    
   

   
    
   
   
    
         }
    
   

   
    
   
   
    
     }