根据反射技术得到jar包中所有类，以及方法
2009-05-19 18:36:00
http://linkyou.blog.51cto.com/1332494/283242
函数背景：希望得到jar包中所有函数和包名，便于在客户端以树型结构展示
public static List<String[]> getJarMethod(String jarFile) throws Exception {
String NORMAL_METHOD= "waitequalsnotifynotifyAlltoStringhashCodegetClass";
List<String[]> a = new ArrayList<String[]>();
try {
//通过jarFile 和JarEntry得到所有的类
JarFile jar = new JarFile(jarFile);//"D:/sip-test.jar"
Enumeration e = jar.entries();
while (e.hasMoreElements()) {
JarEntry entry = (JarEntry) e.nextElement();
//entry.getMethod()
if (entry.getName().indexOf("META-INF") < 0) {
String sName = entry.getName();
String substr[] = sName.split("/");
String pName = "";
for (int i = 0; i < substr.length - 1; i++) {
if (i > 0)
pName = pName + "/" + substr[i];
else
pName = substr[i];
}
if (sName.indexOf(".class") < 0)
{
sName = sName.substring(0, sName.length() - 1);
}
else
{
//通过URLClassLoader.loadClass方法得到具体某个类
URL url1=new URL("file:D:\\sip-test.jar");
URLClassLoader myClassLoader=new URLClassLoader(new URL[]{url1},Thread.currentThread().getContextClassLoader());
String ppName = sName.replace("/", ".").replace(".class", "");
Class myClass = myClassLoader.loadClass(ppName);
//通过getMethods得到类中包含的方法
Method m[] = myClass.getMethods();
for(int i=0; i<m.length; i++)
{
String sm = m[i].getName();
if (NORMAL_METHOD.indexOf(sm) <0)
{
String[] c = {sm, sName};
a.add(c);
}
}
}
String[] b = { sName, pName };
a.add(b);
}
}
return a;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return a;
}
http://linkyou.blog.51cto.com/1332494/283242
