解析jar包中的类与成员

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 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");

     }

}