JavaBean与Map相互转换

package com.piend.tongzhan.common;import java.beans.BeanInfo;import java.beans.IntrospectionException;import java.beans.Introspector;import java.beans.PropertyDescriptor;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.HashMap;import java.util.Map;/** * Bean对象与Map相互转换 *  * @author 唐超 *  */@SuppressWarnings("unchecked")public class JavaBean2Map {public static Map<String, Object> convertBean(Object bean) {Map<String, Object> map = new HashMap<String, Object>();Field fields[] = bean.getClass().getDeclaredFields();try {Field.setAccessible(fields, true);for (int i = 0; i < fields.length; i++) {map.put(fields[i].getName(), fields[i].get(bean));}} catch (Exception e) {e.printStackTrace();}return map;}public static Object convertMap(Class<?> type, Map<String, Object> map) {Object ob = null;try {if (map != null && map.size() > 0) {ob = type.newInstance();Field fields[] = type.getDeclaredFields();Field.setAccessible(fields, true);for (int i = 0; i < fields.length; i++) {if (map.containsKey(fields[i].getName())) {fields[i].set(ob, map.get(fields[i].getName()));}}}} catch (Exception e) {e.printStackTrace();}return ob;}public static Map convertBean1(Object bean) throws IntrospectionException,IllegalAccessException, InvocationTargetException {Class type = bean.getClass();Map returnMap = new HashMap();BeanInfo beanInfo = Introspector.getBeanInfo(type);PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();for (int i = 0; i < propertyDescriptors.length; i++) {PropertyDescriptor descriptor = propertyDescriptors[i];String propertyName = descriptor.getName();if (!propertyName.equals("class")) {Method readMethod = descriptor.getReadMethod();Object result = readMethod.invoke(bean, new Object[0]);if (result != null) {returnMap.put(propertyName, result);} else {returnMap.put(propertyName, "");}}}return returnMap;}public static Object convertMap1(Class type, Map map)throws IntrospectionException, IllegalAccessException,InstantiationException, InvocationTargetException {BeanInfo beanInfo = Introspector.getBeanInfo(type);Object obj = type.newInstance();PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();for (int i = 0; i < propertyDescriptors.length; i++) {PropertyDescriptor descriptor = propertyDescriptors[i];String propertyName = descriptor.getName();if (map.containsKey(propertyName)) {Object value = map.get(propertyName);Object[] args = new Object[1];args[0] = value;descriptor.getWriteMethod().invoke(obj, args);}}return obj;}}

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