com.gitee.sunchenbin.mybatis.actable.utils.FieldUtils Maven / Gradle / Ivy
package com.gitee.sunchenbin.mybatis.actable.utils;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class FieldUtils {
public static Field getKeyField(T obj) {
Field[] allFields = getAllFields(obj);
for (Field field : allFields){
// 设置访问权限
field.setAccessible(true);
if(ColumnUtils.isKey(field,obj.getClass())){
return field;
}
}
return null;
}
public static Field[] getAllFields(T obj) {
Field[] declaredFields = obj.getClass().getDeclaredFields();
// 递归扫描父类的filed
declaredFields = recursionParents(obj.getClass(), declaredFields);
return declaredFields;
}
/**
* 递归扫描父类的fields
* @param clas
* @param fields
*/
@SuppressWarnings("rawtypes")
public static Field[] recursionParents(Class clas, Field[] fields) {
if(clas.getSuperclass()!=null){
Class clsSup = clas.getSuperclass();
List fieldList = new ArrayList();
fieldList.addAll(Arrays.asList(fields));
fieldList.addAll(Arrays.asList(clsSup.getDeclaredFields()));
fields = new Field[fieldList.size()];
int i = 0;
for (Object field : fieldList.toArray()) {
fields[i] = (Field) field;
i++;
}
fields = recursionParents(clsSup, fields);
}
return fields;
}
}