/**
* 取得对象的主键值，辅助函数.
*
* @param entityClass 实体类型
* @param entity 实体对象
* @param <T> generic
* @return 主键
* @throws NoSuchMethodException 找不到方法
* @throws IllegalAccessException 没有访问权限
* @throws InvocationTargetException 反射异常
*/
public Serializable getId(Class entityClass, Object entity)
throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
Assert.notNull(entity);
String idName = getIdName(entityClass);
String getterName = ReflectUtils.getGetterMethodName(entity, idName);
return (Serializable) BeanUtils.invokeMethod(entity, getterName);
}
/**
* 取得对象的主键名,辅助函数.
*
* @param entityClass 实体类型
* @return 主键名称
*/
public String getIdName(Class entityClass) {
Assert.notNull(entityClass);
entityClass = ReflectUtils.getOriginalClass(entityClass);
ClassMetadata meta = this.getSessionFactory().getClassMetadata(entityClass);
Assert.notNull(meta, "Class " + entityClass + " not define in hibernate session factory.");
String idName = meta.getIdentifierPropertyName();
Assert.hasText(idName, entityClass.getSimpleName() + " has no identifier property define.");
return idName;
}
public void setId(Class entityClass, Object entity, Serializable idValue) {
Assert.notNull(entity);
Assert.notNull(idValue);
try {
String idName = getIdName(entityClass);
String setterName = ReflectUtils.getSetterMethodName(idName);
BeanUtils.invokeMethod(entity, setterName, idValue);
} catch (NoSuchMethodException ex) {
logger.info(ex.getMessage(), ex);
} catch (IllegalAccessException ex) {
logger.info(ex.getMessage(), ex);
} catch (InvocationTargetException ex) {
logger.info(ex.getMessage(), ex);
}
}
