public class ListUtil{
/**
* 将JavaBean转换成Map
*
* @param obj
* @return
* @throws SecurityException
* @throws NoSuchMethodException
* @throws InvocationTargetException
* @throws IllegalArgumentException
* @throws IllegalAccessException
*/
public static Map beanToMap(Object obj) throws NoSuchMethodException, SecurityException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException {
// 创建map集合
Map map = new HashMap();
// 获取JavaBean中所有属性
Field[] fields = ().getDeclaredFields();
for (Field fie : fields) {
// 将属性第一个字母转换成大写
String frist = ().substring(0, 1).toUpperCase();
// 获取属性的类型
Class<?> type = ();
// 封装属性的get
String getter = "";
if ("boolean".equals(())) {
getter = "is" + frist + ().substring(1);
} else {
getter = "get" + frist + ().substring(1);
}
// 获取JavaBean的方法
Method method = ().getMethod(getter, new Class[] {});
// 调用方法,并接收返回值
Object objec = (obj, new Object[] {});
// 判断返回值不为空
if (objec != null) {
((), objec);
} else {
((), "");
}
}
return map;
}
/**
* 将Map转换为JavaBean
*
* @param map
* @param obj
* @return
* @throws SecurityException
* @throws NoSuchMethodException
* @throws InvocationTargetException
* @throws IllegalArgumentException
* @throws IllegalAccessException
*/
public static Object mapToBean(Map<String, Object> map, Object obj) throws NoSuchMethodException, SecurityException,
IllegalAccessException, IllegalArgumentException, InvocationTargetException {
// 获取JavaBean中的所有属性
Field[] field = ().getDeclaredFields();
for (Field fi : field) {
// 判断key值是否存在
if ((())) {
// 获取key的value值
String value = (()).toString();
// 将属性的第一个字母转换为大写
String frist = ().substring(0, 1).toUpperCase();
// 属性封装set方法
String setter = "set" + frist + ().substring(1);
// 获取当前属性类型
Class<?> type = ();
// 获取JavaBean的方法,并设置类型
Method method = ().getMethod(setter, type);
// 判断属性为double类型
if ("".equals(())) {
// 调用当前Javabean中set方法，并传入指定类型参数
(obj, value);
} else if ("int".equals(())) {
(obj, (value));
}else if ("double".equals(())) {
(obj, (value));
} else if ("char".equals(())) {
(obj, value);
}
}
}
return obj;
}
/**
* 将List<Map<String,Object>>转换成List<javaBean>
*
* @param listm
* @param obj
* @return
* @throws InvocationTargetException
* @throws IllegalArgumentException
* @throws IllegalAccessException
* @throws SecurityException
* @throws NoSuchMethodException
*/
public static Object ListMapToListBean(List<Map<String, Object>> listm, Object obj)
throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException,
InvocationTargetException {
List<Object> list = new ArrayList<Object>();
// 循环遍历出map对象
for (Map<String, Object> m : listm) {
// 调用将map转换为JavaBean的方法
Object objs = mapToBean(m, obj);
// 添加进list集合
(objs);
}
return list;
}
/**
* 将list<javabean>转换为List<Map>
*
* @param list
* @return
* @throws NoSuchMethodException
* @throws SecurityException
* @throws IllegalAccessException
* @throws IllegalArgumentException
* @throws InvocationTargetException
*/
public static List<Map<String, Object>> ListBeanToListMap(List<Object> list) throws NoSuchMethodException,
SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
List<Map<String, Object>> listmap = new ArrayList<Map<String, Object>>();
for (Object ob : list) {
(beanToMap(ob));
}
return listmap;
}
}