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屬性填充 ( 懶人版)

Posted on 2007-04-20 10:09 G_G 閱讀(371) 評論(0) 編輯收藏所屬分類: Inspiration

主要類先上

package ?myUtil;

import ?java.lang.reflect.InvocationTargetException;

import ?java.lang.reflect.Method;

import ?java.util.Enumeration;

import ?java.util.Hashtable;

import ?java.util.Map;

import ?java.util.Vector;

public ? class ?CopyAttribute? {

???? public ? static ? void ?copy(Object?bn1,Object?bn2)? throws ?Exception {

????????Hashtable?m1? = ? new ?Hashtable();

????????Hashtable?m2? = ? new ?Hashtable();

????????

???????? // 取出?類?一?的?set?方法

????????Method[]?me1? = ??bn1.getClass().getMethods()?;

???????? for ( int ?i = 0 ;i < me1.length;i ++ ) {

????????????String?name? = ?me1[i].getName()?;

???????????? if (?name.indexOf( " set " ) == 0 ?) {

????????????????String?Att? = ?(name.substring( 3 ,name.length())).toUpperCase();

????????????????m1.put(Att,me1[i]);

????????????}

????????}

????????

???????? // ????取出?類?二?的?get?方法

????????Method[]?me2? = ??bn2.getClass().getMethods()?;

???????? for ( int ?i = 0 ;i < me2.length;i ++ ) {

????????????String?name? = ?me2[i].getName()?;

???????????? if (?name.indexOf( " get " ) == 0 ?) {

????????????????String?Att? = ?(name.substring( 3 ,name.length())).toUpperCase();

????????????????m2.put(Att,me2[i]);

????????????}

????????}

????????

????????Enumeration?en2? = ??m2.keys();

????????Enumeration?en1? = ??m1.keys();

????????

???????? while (en2.hasMoreElements()) {

????????????String?Att? = ?(String)en2.nextElement();

????????????Method?get? = ?(Method)m2.get(Att);

????????????Method?set? = ?(Method)m1.get(Att);

????????????

???????????? if (set == null ) continue ;

????????????

????????????set.invoke(bn1, new ?Object[] {?get.invoke(bn2, new ?Object[] {} )?} );

????????}

????????

????}

}

運行

}

package?test;

import?myUtil.CopyAttribute;

import?Bean.Bean1;

import?Bean.Bean2;

import?junit.framework.TestCase;

public?class?test?extends?TestCase?{

????protected?void?setUp()?throws?Exception?{

????????super.setUp();

????}

????protected?void?tearDown()?throws?Exception?{

????????super.tearDown();

????}

????

????public?void?testMyCopy()?throws?Exception{

????????

????????Bean1?b1?=?new?Bean1();

????????b1.setAvg(23);

????????b1.setName("liukaiyi");

????????

????????Bean2?b2?=?new?Bean2();

????????b2.setName(null);

????????CopyAttribute.copy(b2,b1);

????????

????????assertNotNull(b2.getName());

???}

}

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