Java reflection Test

package com.tistory.tazz009.reflection; public class MemberVO { private String name; private String id; static { System.out.println("ready!!!"); } public MemberVO() { } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getId() { return id; } public void setId(String id) { this.id = id; } @Override public String toString() { return "MemberVO [name=" + name + ", id=" + id + "]"; } }

/** * 동적 클래스 생성 테스트 * @throws Exception */ @Test public void test_001() throws Exception { String className = "com.tistory.tazz009.reflection.MemberVO"; Class<?> clz = Class.forName(className); Object obj = clz.newInstance(); System.out.println(obj.toString()); ((MemberVO) obj).setName("우혁이아빠"); ((MemberVO) obj).setId("tazz009"); System.out.println(obj.toString()); Object obj2 = clz.newInstance(); // new MemberVO(); System.out.println(obj2.toString()); }

/** * 동적 클래스 생성 그리고 필드값 세팅 * @throws Exception */ @Test public void test_002() throws Exception { Map<String, String> params = new HashMap<String, String>(); params.put("name", "우혁이아빠"); params.put("id", "tazz009"); String className = "com.tistory.tazz009.reflection.MemberVO"; Class<?> clz = Class.forName(className); Object obj = clz.newInstance(); BeanInfo info = Introspector.getBeanInfo(clz); PropertyDescriptor[] propertyDescriptors = info.getPropertyDescriptors(); for (PropertyDescriptor propertyDescriptor : propertyDescriptors) { Method writeMethod = propertyDescriptor.getWriteMethod(); if (writeMethod == null) { continue; } System.out.println(writeMethod.getName()); System.out.println(propertyDescriptor.getDisplayName()); System.out.println(propertyDescriptor.getPropertyType()); writeMethod.invoke(obj, params.get(propertyDescriptor.getDisplayName())); } System.out.println(obj.toString()); }

/** /** * 동적 클래스 생성 그리고 필드값 세팅 Ver 0.2 * @throws Exception */ @Test public void test_003() throws Exception { Map<String, String> params = new HashMap<String, String>(); params.put("name", "우혁이아빠"); params.put("id", "tazz009"); String className = "com.tistory.tazz009.reflection.MemberVO"; Class<?> clz = Class.forName(className); Object obj = clz.newInstance(); PropertyDescriptor[] propertyDescriptors = PropertyUtils.getPropertyDescriptors(clz); for (PropertyDescriptor propertyDescriptor : propertyDescriptors) { Method writeMethod = PropertyUtils.getWriteMethod(propertyDescriptor); if (writeMethod == null) { continue; } MethodUtils.invokeMethod(obj, writeMethod.getName(), params.get(propertyDescriptor.getDisplayName())); } System.out.println(obj.toString()); }

OLC 동강 듣고 정리했어요!!!