获取任意java类实例的方法和属性，包括父类的方法和属性
import java.lang.reflect.Field; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; /** * 获取任意java类实例的方法和属性，包括父类的方法和属性 * @author weishaoxiang */public class Student extends School { private String code; private String name; private Date birthday; private int age; private int classNumber; private boolean isGoodStudent; private List< School > sch; private School sch1 = new School ( ); /** * 测试 * @param args */ public static void main ( String[] args ) { Student student = new Student ( ); // 获取属性 Map< String, Class > map = getClassFields ( student.getClass ( ), true ); for ( Object key : map.keySet ( ) ) { System.out.println ( "<field=" + key.toString ( ) + "> <Type=" + map.get ( key ) + ">" ); } // 获取方法 List< Method > methods = getMothds ( student.getClass ( ), true ); for ( Method method : methods ) { System.out.println ( method.getName ( ) ); } System.out.println ( "方法总数：" + methods.size ( ) ); } /** * 获取类实例的属性值 * @param clazz * 类名 * @param includeParentClass * 是否包括父类的属性值 * @return 类名.属性名=属性类型 */ public static Map< String, Class > getClassFields ( Class clazz, boolean includeParentClass ) { Map< String, Class > map = new HashMap< String, Class > ( ); Field[] fields = clazz.getDeclaredFields ( ); for ( Field field : fields ) { map.put ( clazz.getName ( ) + "." + field.getName ( ), field.getType ( ) ); } if ( includeParentClass ) getParentClassFields ( map, clazz.getSuperclass ( ) ); return map; } /** * 获取类实例的父类的属性值 * @param map * 类实例的属性值Map * @param clazz * 类名 * @return 类名.属性名=属性类型 */ private static Map< String, Class > getParentClassFields ( Map< String, Class > map, Class clazz ) { Field[] fields = clazz.getDeclaredFields ( ); for ( Field field : fields ) { map.put ( clazz.getName ( ) + "." + field.getName ( ), field.getType ( ) ); } if ( clazz.getSuperclass ( ) == null ) { return map; } getParentClassFields ( map, clazz.getSuperclass ( ) ); return map; } /** * 获取类实例的方法 * @param clazz * 类名 * @param includeParentClass * 是否包括父类的方法 * @return List */ public static List< Method > getMothds ( Class clazz, boolean includeParentClass ) { List< Method > list = new ArrayList< Method > ( ); Method[] methods = clazz.getDeclaredMethods ( ); for ( Method method : methods ) { list.add ( method ); } if ( includeParentClass ) { getParentClassMothds ( list, clazz.getSuperclass ( ) ); } return list; } /** * 获取类实例的父类的方法 * @param list * 类实例的方法List * @param clazz * 类名 * @return List */ private static List< Method > getParentClassMothds ( List< Method > list, Class clazz ) { Method[] methods = clazz.getDeclaredMethods ( ); for ( Method method : methods ) { list.add ( method ); } if ( clazz.getSuperclass ( ) == Object.class ) { return list; } getParentClassMothds ( list, clazz.getSuperclass ( ) ); return list; } public int getAge ( ) { return age; } public void setAge ( int age ) { this.age = age; } } class Country { private StringcountryName; private long peopleNumber; public long getPeopleNumber ( ) { return peopleNumber; } public void setPeopleNumber ( long peopleNumber ) { this.peopleNumber = peopleNumber; } } class School extends Country { private StringschoolName; private Stringaddress; public String getAddress ( ) { return address; } public void setAddress ( String address ) { this.address = address; } }
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