javaBean与map类型相互转换

/**
* 把Map键值对转化为javaBean对象
* 
* @param type
* @param map
* @return
* @throws Exception
*/
private Object transforMapToObject(Class type, Map map) throws Exception {
BeanInfo beanInfo = Introspector.getBeanInfo(type); //获取类属性
Object obj = type.newInstance(); //创建 JavaBean 对象
//给 JavaBean对象的属性赋值
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
for (int i = 0; i < propertyDescriptors.length; i++) {
PropertyDescriptor descriptor = propertyDescriptors[i];
String propertyName = descriptor.getName();
if (map.containsKey(propertyName)) {
try {
Object value = map.get(propertyName);
Object[] args = new Object[1];
args[0] = value;
descriptor.getWriteMethod().invoke(obj, args);
} catch (Exception e) {
e.printStackTrace();
}
}
}
return obj;
}

/**
* 把javaBean对象转换为Map键值对
* 
* @param bean
* @return
* @throws Exception
*/
private Map transforObjectToMap(Object bean) throws Exception {
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.toString());
}
}
}
return returnMap;
}