java实体类转map_Java实体类Bean与Map互相转化(两种方式)

packagecom.x2;importjava.beans.BeanInfo;importjava.beans.Introspector;importjava.beans.PropertyDescriptor;importjava.lang.reflect.Method;importjava.util.HashMap;importjava.util.Map;public classBeanTest {public static Mapbean2Map(Object obj) {if (obj == null) {return null;

}

Map map = new HashMap();try{

BeanInfo beanInfo=Introspector.getBeanInfo(obj.getClass());

PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();for(PropertyDescriptor property : propertyDescriptors) {

String key=property.getName();//过滤class属性

if (!key.equals("class")) {//得到property对应的getter方法

Method getter =property.getReadMethod();

Object value=getter.invoke(obj);

map.put(key, value);

}

}

}catch(Exception e) {

e.printStackTrace();

}returnmap;

}public staticObject mapToBean(Class type, Map map) {

Object obj= null;try{

BeanInfo beanInfo=Introspector.getBeanInfo(type);

obj=type.newInstance();

PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();for(PropertyDescriptor descriptor : propertyDescriptors) {

String propertyName=descriptor.getName();if(map.containsKey(propertyName)) {

Object value=map.get(propertyName);

descriptor.getWriteMethod().invoke(obj, value);

}

}

}catch(Exception e) {

System.out.println("map转实体类出现异常");

}returnobj;

}public static voidmain(String[] args) {

Xieh xieh= newXieh();

xieh.setName("谢辉");

xieh.setAge(23);

Map map =bean2Map(xieh);

System.out.println(map.toString());

Xieh object= (Xieh) mapToBean(Xieh.class, map);

System.out.println(object.toString());

}

}