一个反射方法应用实例

需求：在导出的时候，需要将list中的对象值赋给数组对象，返回一个数组集合

private List<Object> transBean2ObjectGradeNumber(List<GradeNumberOfPeopleStatistical> list) {
List<Object> retList = new ArrayList<Object>();
if (list == null || list.isEmpty()) {
Object[] objs = new Object[6];
retList.add(objs);
return retList;
}
Object[] objs = null;
for (GradeNumberOfPeopleStatistical temp : list) {
objs = new Object[6];
int index = 0;
objs[index++] = temp.getGradeTypeName();
objs[index++] = temp.getTotalClass();
objs[index++] = temp.getMen();
objs[index++] = temp.getWomen();
objs[index++] = temp.getMenWomenProportion();
objs[index++] = temp.getTotalPeople();
retList.add(objs);
}
return retList;
}

private List<Object> transBean2ObjectExport(List<?> list,String[] methodNames) throws Exception {
List<Object> retList = new ArrayList<Object>();
if (list == null || list.isEmpty()) {
Object[] objs = new Object[methodNames.length];
retList.add(objs);
return retList;
}
Object[] objs = null;

for (Object object : list) {
objs = new Object[methodNames.length];
Class<? extends Object> cls = object.getClass();
for (int i = 0; i <  methodNames.length ; i++ ) {
Method method = cls.getMethod("get" + methodNames[i].substring(0,1).toUpperCase() + methodNames[i].substring(1));
objs[i] = method.invoke(object);
}
retList.add(objs);

}
return retList;
}