读取指定jar包 解析jar包中所有的类（获取到类的方法和属性）

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

public class jarTest {
	
	 public static void getJarName(String jarFile) throws Exception {  
		  
	        try{  
	            //通过将给定路径名字符串转换为抽象路径名来创建一个新File实例  
	            File f = new File(jarFile);  
	            URL url1 = f.toURI().toURL();  
	            URLClassLoader myClassLoader = new URLClassLoader(new URL[]{url1},Thread.currentThread().getContextClassLoader());  
	              
	            //通过jarFile和JarEntry得到所有的类  
	            JarFile jar = new JarFile(jarFile);  
	            //返回zip文件条目的枚举  
	            Enumeration<JarEntry> enumFiles = jar.entries();  
	            JarEntry entry;  
	              
	            //测试此枚举是否包含更多的元素  
	            while(enumFiles.hasMoreElements()){  
	                entry = (JarEntry)enumFiles.nextElement();  
	                if(entry.getName().indexOf("META-INF")<0){  
	                    String classFullName = entry.getName();  
	                    if(!classFullName.endsWith(".class")){  
	                        classFullName = classFullName.substring(0,classFullName.length()-1);  
	                    } else{  
	                        //去掉后缀.class  
	                        String className = classFullName.substring(0,classFullName.length()-6).replace("/", ".");  
	                        Class<?> myclass = myClassLoader.loadClass(className);  
	                        //打印类名  
	                        System.out.println("*****************************");
	                        System.out.println("全类名:" + className);  
	                          
	                        //得到类中包含的属性  
	                        Method[] methods = myclass.getMethods();
	            	        for (Method method : methods) {
	            	            String methodName = method.getName();
	            	            System.out.println("方法名称:" + methodName);
	            	            Class<?>[] parameterTypes = method.getParameterTypes();
	            	            for (Class<?> clas : parameterTypes) {
	            	               // String parameterName = clas.getName();
	            	            	String parameterName = clas.getSimpleName();
	            	                System.out.println("参数类型:" + parameterName);
	            	            }
	            	            System.out.println("==========================");	                        	                        
	                    }  
	                }  
	             }  
	            }         
	        } catch(IOException e){  
	            e.printStackTrace();  
	        }  
	    }  
	      
	      
	      
	    /** 
	     * 这些默认方法不打印 
	     */  
	    private static String DEFAULT_METHOD = "waitequalsnotifynotifyAlltoStringhashCodegetClass";  
	  
	  
	    public static void main(String[] args) throws Exception {  
	        //jar包所在路径  
	        /*getJarName("F:\user.jar"); 
	        getJarName("F:\role1.jar"); 
	        getJarName("F:\role2.jar"); */
	        //getJarName("F:\UserInfo.jar");  
	        getJarName("F:\test\FileTest.jar");  
	    	
	    }  
	
}