Bean和Map之间的转换

import java.beans.BeanInfo;

import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;//需要引入该jar包

public class BeanMapUtil {

//
public static Object Map2Bean(Class type, Map map)
throws IntrospectionException, IllegalAccessException,
InstantiationException, InvocationTargetException {
//TODO yefangwei
// ConvertUtils.register(new DateConvert(), Date.class);

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.toUpperCase())))
continue;
try {
Object value = map.get(propertyName.toUpperCase());
BeanUtils.setProperty(obj, propertyName, value);
} catch (Exception e) {
}
}
return obj;
}

//mybatis中传参可以用到

public static Map bean2Map(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, null);
}
}
}
return returnMap;
}
}