/**
* 把map转换成对象
* @param type 被转换的对象类型
* @param map map
* @return obj 返回对象
*/
public static Object convertMap(Class type, Map map) {
BeanInfo beanInfo;
Object obj = null;
try {
beanInfo = Introspector.getBeanInfo(type);
// 获取类属性
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().toUpperCase();
if (map.containsKey(propertyName)) {
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;
}
/**
* 将一个 JavaBean 对象转化为一个 Map
* @param bean 要转化的JavaBean 对象
* @return 转化出来的 Map 对象
* @throws IntrospectionException 如果分析类属性失败
* @throws IllegalAccessException 如果实例化 JavaBean 失败
* @throws InvocationTargetException 如果调用属性的 setter 方法失败
*/
public static Map convertBean(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;
}