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import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Reflection {
/**
* 得到某个对象的公共属性
*
* @param owner, fieldName
* @return 该属性对象
* @throws Exception
*
*/
public Object getProperty(Object owner, String fieldName) throws Exception {
Class ownerClass = owner.getClass();
Field field = ownerClass.getField(fieldName);
Object property = field.get(owner);
return property;
}
/**
* 得到某类的静态公共属性
*
* @param className 类名
* @param fieldName 属性名
* @return 该属性对象
* @throws Exception
*/
public Object getStaticProperty(String className, String fieldName)
throws Exception {
Class ownerClass = Class.forName(className);
Field field = ownerClass.getField(fieldName);
Object property = field.get(ownerClass);
return property;
}
/**
* 执行某对象方法
*
* @param owner
* 对象
* @param methodName
* 方法名
* @param args
* 参数
* @return 方法返回值
* @throws Exception
*/
public Object invokeMethod(Object owner, String methodName, Object[] args)
throws Exception {
Class ownerClass = owner.getClass();
Class[] argsClass = new Class[args.length];
for (int i = 0, j = args.length; i < j; i++) {
argsClass[i] = args[i].getClass();
}
Method method = ownerClass.getMethod(methodName, argsClass);
return method.invoke(owner, args);
}
/**
* 执行某类的静态方法
*
* @param className
* 类名
* @param methodName
* 方法名
* @param args
* 参数数组
* @return 执行方法返回的结果
* @throws Exception
*/
public Object invokeStaticMethod(String className, String methodName,
Object[] args) throws Exception {
Class ownerClass = Class.forName(className);
Class[] argsClass = new Class[args.length];
for (int i = 0, j = args.length; i < j; i++) {
argsClass[i] = args[i].getClass();
}
Method method = ownerClass.getMethod(methodName, argsClass);
return method.invoke(null, args);
}
/**
* 新建实例
* @param className 类名
* @param args 构造函数的参数
* 如果无构造参数，args 填写为 null
* @return 新建的实例
* @throws Exception
*/
public Object newInstance(String className, Object[] args,Class[] argsType) throws NoSuchMethodException, SecurityException, ClassNotFoundException,
InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException
{
Class newoneClass = Class.forName(className);
if(args == null){
return newoneClass.newInstance();
}else{
// Class[] argsClass = new Class[args.length];
//
// for (int i = 0, j = args.length; i < j; i++) {
// argsClass[i] = args[i].getClass();
// }
//
// Constructor cons = newoneClass.getConstructor(argsClass);
Constructor cons = newoneClass.getConstructor(argsType);
return cons.newInstance(args);
}
}
/**
* 是不是某个类的实例
* @param obj 实例
* @param cls 类
* @return 如果 obj 是此类的实例，则返回 true
*/
public boolean isInstance(Object obj, Class cls) {
return cls.isInstance(obj);
}
/**
* 得到数组中的某个元素
* @param array 数组
* @param index 索引
* @return 返回指定数组对象中索引组件的值
*/
public Object getByArray(Object array, int index) {
return Array.get(array,index);
}
public Class<?> GetClassListByPackage(String pPackage) {
Package _Package = Package.getPackage(pPackage);
Class<?> _List = _Package.getClass();
return _List;
}
}