package com.lion.util; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; /**** @author liyongyao**/ public class GetClassInfo {/*** 獲得屬性名** @param object* @return*/public static ArrayList<String> ComponentsName(Object object) {Field[] fields = object.getClass().getDeclaredFields();ArrayList<String> filedName = new ArrayList<String>();for (int i = 0; i < fields.length; i++) {try {String varName = fields[i].getName();boolean accessFlag = fields[i].isAccessible();fields[i].setAccessible(true);filedName.add(varName);fields[i].setAccessible(accessFlag);} catch (SecurityException e) {e.printStackTrace();} catch (IllegalArgumentException e) {e.printStackTrace();}}return filedName;}/*** 獲取鍵值對** @param object* @return*/public static Map<String, Object> ComponentsNameAndValue(Object object) {Field[] fields = object.getClass().getDeclaredFields();Map<String, Object> nameAndValue = new HashMap<String, Object>();ArrayList<String> filedName = new ArrayList<String>();ArrayList<Object> filedValue = new ArrayList<Object>();for (int i = 0; i < fields.length; i++) {try {boolean accessFlag = fields[i].isAccessible();fields[i].setAccessible(true);String varName = fields[i].getName();Object varValue = fields[i].get(object);filedName.add(varName);filedValue.add(varValue);fields[i].setAccessible(accessFlag);} catch (Exception e) {e.printStackTrace();}}nameAndValue.put("value", filedValue);nameAndValue.put("key", filedName);return nameAndValue;}/*** 獲取鍵值對打印到控制臺** @param object* @return*/public static void printClassInfo(Object object) {Field[] fields = object.getClass().getDeclaredFields();for (int i = 0; i < fields.length; i++) {try {boolean accessFlag = fields[i].isAccessible();fields[i].setAccessible(true);String varName = fields[i].getName();Object varValue = fields[i].get(object);System.out.println(varName + "=" + varValue);fields[i].setAccessible(accessFlag);} catch (Exception e) {e.printStackTrace();}}}/*** 根據(jù)屬性名稱查找對象中的相應(yīng)值** @param name* 屬性名* @param object* 要查找的對象* @return Object 返回屬性對應(yīng)的值*/public static Object getValueByName(String name, Object object) {try {Field f = object.getClass().getDeclaredField(name);boolean accessFlag = f.isAccessible();f.setAccessible(true);Object o = f.get(object);f.setAccessible(accessFlag);return o;} catch (Exception e) {e.printStackTrace();}return null;}public static Object setValueByName(String name, Object value, Object object) {try {Field f = object.getClass().getDeclaredField(name);boolean accessFlag = f.isAccessible();// 獲得原始權(quán)限f.setAccessible(true);// 權(quán)限設(shè)置為可訪問f.set(object, value);f.setAccessible(accessFlag);// 還原權(quán)限r(nóng)eturn object;} catch (Exception e) {e.printStackTrace();}return null;} }

轉(zhuǎn)載于:https://blog.51cto.com/liyongyao/1206765

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