将List<Map>转换为List<Bean>
/**
* 方法说明：将List<Map>转换为List<Bean>
*
* @param mapList
* @param cls
* @return
* @throws Exception
*/
public static List<Object> mapListToBeanList(
List<Map<String, Object>> mapList, Class<?> cls) throws Exception {
if (mapList == null || mapList.size() == 0) {
return null;
}
List<Object> beanList = new ArrayList<Object>();
Object bean = null;
for (Map<String, Object> map : mapList) {
bean = mapToBean(map, cls);
if (bean == null) {
continue;
}
beanList.add(bean);
}
return beanList;
}
设置bean 属性值,没有下划线的
/**
* 设置bean 属性值,没有下划线的
*
* @param map
* @param cls
* @return
* @throws Exception
*/
public static Object mapToBeanNL(Map<String, Object> map, Class<?> cls) throws Exception {
if (map == null || map.size() == 0) {
return null;
}
Object obj = cls.newInstance();
for (Entry<String, Object> entry : map.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
if (value == null) {
continue;
}
// 判断字段是否存在
String fieldName = key;
Field field = getBeanField(cls, fieldName);
if (field == null) {
continue;
}
// 判断字段的set方法是否存在
String setMethodName = StringUtils.pareSetName(fieldName);
Method method = getBeanMethod(cls, setMethodName, field.getType());
if (method == null) {
continue;
}
String fieldType = field.getType().getSimpleName();
if ("String".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("long".equals(fieldType) || "Long".equals(fieldType)) {
method.invoke(obj, Long.valueOf(value.toString()));
} else if ("int".equals(fieldType) || "Integer".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("double".equals(fieldType) || "Double".equals(fieldType)) {
method.invoke(obj, Double.valueOf(value.toString()));
} else if ("float".equals(fieldType) || "Float".equals(fieldType)) {
method.invoke(obj, Float.valueOf(value.toString()));
} else if ("boolean".equals(fieldType) || "Boolean".equals(fieldType)) {
if (value.getClass().equals(Boolean.class)) {
method.invoke(obj, (Boolean) value);
} else {
method.invoke(obj, Boolean.valueOf(value.toString()));
}
} else if ("Date".equals(fieldType)) {
if (value != null) {
if (value.getClass().equals(Date.class)) {
method.invoke(obj, (Date) value);
} else {
method.invoke(obj, DateUtil.string_date(value.toString()));
}
}
}
}
return obj;
}
设置bean 属性值
/**
* 设置bean 属性值
*
* @param map
* @param cls
* @return
* @throws Exception
*/
public static Object mapToBean(Map<String, Object> map, Class<?> cls)
throws Exception {
if (map == null || map.size() == 0) {
return null;
}
Object obj = cls.newInstance();
for (Entry<String, Object> entry : map.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
if (value == null) {
continue;
}
// 判断字段是否存在
String fieldName = StringUtils.toUnderLine(key.toLowerCase());
Field field = getBeanField(cls, fieldName);
if (field == null) {
continue;
}
// 判断字段的set方法是否存在
String setMethodName = StringUtils.pareSetName(fieldName);
Method method = getBeanMethod(cls, setMethodName, field.getType());
if (method == null) {
continue;
}
String fieldType = field.getType().getSimpleName();
if ("String".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("long".equals(fieldType) || "Long".equals(fieldType)) {
method.invoke(obj, Long.valueOf(value.toString()));
} else if ("int".equals(fieldType) || "Integer".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("double".equals(fieldType) || "Double".equals(fieldType)) {
method.invoke(obj, Double.valueOf(value.toString()));
} else if ("float".equals(fieldType) || "Float".equals(fieldType)) {
method.invoke(obj, Float.valueOf(value.toString()));
} else if ("boolean".equals(fieldType)
|| "Boolean".equals(fieldType)) {
if (value.getClass().equals(Boolean.class)) {
method.invoke(obj, (Boolean) value);
} else {
method.invoke(obj, Boolean.valueOf(value.toString()));
}
} else if ("Date".equals(fieldType)) {
if (value != null) {
if (value.getClass().equals(Date.class)) {
method.invoke(obj, (Date) value);
} else {
method.invoke(obj, DateUtil.string_date(value.toString()));
}
}
}
}
return obj;
}
方法说明：将List<Bean>转换为List<Map>
/**
* 方法说明：将List<Bean>转换为List<Map>
*
* @param beanList
* @return
* @throws Exception
*/
public static List<Map<String, Object>> beanListToMapList(
List<Map<String, Object>> beanList) throws Exception {
if (beanList == null || beanList.size() == 0) {
return null;
}
List<Map<String, Object>> mapList = new ArrayList<Map<String, Object>>();
Map<String, Object> map = null;
for (Object bean : beanList) {
map = beanToMap(bean);
if (map == null || map.size() == 0) {
continue;
}
mapList.add(map);
}
return mapList;
}
设置bean 属性值
/**
* 设置bean 属性值
*
* @param bean
* @return
* @throws Exception
*/
public static Map<String, Object> beanToMap(Object bean) throws Exception {
if (bean == null) {
return null;
}
Map<String, Object> map = new HashMap<String, Object>();
Class<?> cls = bean.getClass();
Field fields[] = cls.getDeclaredFields();
for (Field field : fields) {
String fieldName = field.getName();
String fieldType = field.getType().getSimpleName();
boolean isBooleanType = false;
if (fieldType.equals("boolean") || fieldType.equals("Boolean")) {
isBooleanType = true;
}
String getMethodName = StringUtils.pareGetName(fieldName,
isBooleanType);
// 判断字段的无参get方法是否存在
Method method = getBeanMethod(cls, getMethodName, new Class[]{});
if (method == null) {
continue;
}
Object fieldValue = method.invoke(bean, new Object[]{});
map.put(StringUtils.toUnderLine(field.getName()).toUpperCase(),
fieldValue);
}
return map;
}
判断该方法是否存在
/**
* 判断该方法是否存在
*
* @param methods
* @param met
* @return
*/
public static boolean checkMethod(Method methods[], String met) {
if (null != methods) {
for (Method method : methods) {
if (met.equals(method.getName())) {
return true;
}
}
}
return false;
}
获取bean的指定方法
/**
* 方法说明：获取bean的指定方法
* <p>
* <p>
* Author： zhenqiangs Create Date： 2016-4-30 下午01:07:12 History: 2016-4-30
* 下午01:07:12 zhenqiangs Created.
*
* @param cls
* @param methodName
* @param paramTypes
* @return
*/
private static Method getBeanMethod(Class<?> cls, String methodName,
Class<?>... paramTypes) {
if (cls == null) {
return null;
}
Method setMethod = null;
try {
setMethod = cls.getMethod(methodName, paramTypes);
} catch (Exception e) {
}
return setMethod;
}
/**
* 方法说明：获取bean的指定属性
*
* @param cls
* @param fieldName
* @return
*/
public static Field getBeanField(Class<?> cls, String fieldName) {
if (cls == null) {
return null;
}
Field field = null;
try {
field = cls.getDeclaredField(fieldName);
} catch (Exception e) {
}
return field;
}
/**
* 设置对应值
*
* @param fieldName
*/
public static void setBeanField(Class<?> cls, Object obj, String fieldName, Object value) throws Exception {
// 判断字段是否存在
Field field = getBeanField(cls, fieldName);
if (field == null) {
return;
}
// 判断字段的set方法是否存在
String setMethodName = StringUtils.pareSetName(fieldName);
Method method = getBeanMethod(cls, setMethodName, field.getType());
if (method == null) {
return;
}
//为空不设置
if (value == null) {
return;
}
String fieldType = field.getType().getSimpleName();
if ("String".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("long".equals(fieldType) || "Long".equals(fieldType)) {
method.invoke(obj, Long.valueOf(value.toString()));
} else if ("int".equals(fieldType) || "Integer".equals(fieldType)) {
method.invoke(obj, value.toString());
} else if ("double".equals(fieldType) || "Double".equals(fieldType)) {
method.invoke(obj, Double.valueOf(value.toString()));
} else if ("float".equals(fieldType) || "Float".equals(fieldType)) {
method.invoke(obj, Float.valueOf(value.toString()));
} else if ("boolean".equals(fieldType) || "Boolean".equals(fieldType)) {
if (value.getClass().equals(Boolean.class)) {
method.invoke(obj, (Boolean) value);
} else {
method.invoke(obj, Boolean.valueOf(value.toString()));
}
} else if ("Date".equals(fieldType)) {
if (value.getClass().equals(Date.class)) {
method.invoke(obj, (Date) value);
} else {
method.invoke(obj, DateUtil.string_date(value.toString()));
}
}
}
/**
* 设置对应值
*
* @param fieldName
*/
public static Object getBeanFieldValue(Class<?> cls, Object obj, String fieldName) throws Exception {
// 判断字段是否存在
// Field field = getBeanField(cls, fieldName);
// 判断字段的get方法是否存在
String getMethodName = StringUtils.pareGetName(fieldName, false);
// 判断字段的无参get方法是否存在
Method method = getBeanMethod(cls, getMethodName, new Class[]{});
Object fieldValue = method.invoke(obj, new Object[]{});
return fieldValue;
}
/**
* 获取一个对象里面不为空的属性值
*
* @param object
* return map
* @throws IllegalAccessException
* @throws Exception
*/
public static Map<Object, Object> getBeanFieldForNotNull(Object obj) throws Exception{
Map<Object, Object> map = new HashMap<Object, Object>();
Class<?> aClass = obj.getClass();
Field[] fs = aClass.getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
Object o = f.get(obj);
if (ObjectUtil.isNotEmpty(o)){
map.put(f.getName(), o);
}
}
return map;
}
/**
* 判断一个bean的属性是否是null或者"";
*
* @param object
* return true/false
* @throws IllegalAccessException
* @throws Exception
*/
public static boolean isNotEmpty(Object obj) throws Exception{
Map<Object, Object> map = new HashMap<Object, Object>();
Class<?> aClass = obj.getClass();
Field[] fs = aClass.getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
Object o = f.get(obj);
if (ObjectUtil.isNotEmpty(o)){
map.put(f.getName(), o);
}
}
return CollUtil.isNotEmpty(map);
}
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