cn.acyou.leo.framework.util.BeanUtil Maven / Gradle / Ivy

Go to download
package cn.acyou.leo.framework.util;

import io.swagger.annotations.ApiModelProperty;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cglib.beans.BeanMap;
import org.springframework.objenesis.instantiator.util.ClassUtils;

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@Slf4j
public class BeanUtil {

    /**
     * 将Object 转换为Map key-属性名 value-属性值
     * @param obj bean
     * @return Map key-属性名 value-属性值
     */
    public static Map convertToMap(Object obj) {
        return beanToMap(obj);
    }

    @SuppressWarnings("unchecked")
    public static Map beanToMap(Object bean) {
        return null == bean ? null : new HashMap(BeanMap.create(bean));
    }

    public static  T mapToBean(Map map, Class clazz) {
        T bean = ClassUtils.newInstance(clazz);
        BeanMap.create(bean).putAll(map);
        return bean;
    }

    /**
     * Bean 不同的信息
     *
     *  ex: {姓名=王二 to 王xiao二, 年龄=3 to 12}
     * @param obj1 obj1
     * @param obj2 obj2
     * @return Map
     */
    public static Map differentInfo(Object obj1, Object obj2){
        Map resMap = new LinkedHashMap<>();
        if (!obj1.getClass().equals(obj2.getClass())) {
            return resMap;
        }
        Field[] obj1Fields = obj1.getClass().getDeclaredFields();
        Field[] obj2Fields = obj2.getClass().getDeclaredFields();
        for (Field obj1Field : obj1Fields) {
            ApiModelProperty annotation = obj1Field.getAnnotation(ApiModelProperty.class);
            String value = annotation.value();
            try {
                obj1Field.setAccessible(true);
                Object o1V = obj1Field.get(obj1);
                obj1Field.setAccessible(false);
                Object o2V = null;
                for (Field obj2Field : obj2Fields) {
                    if (obj1Field.getName().equals(obj2Field.getName())) {
                        obj2Field.setAccessible(true);
                        o2V = obj2Field.get(obj2);
                        obj2Field.setAccessible(false);
                        break;
                    }
                }
                String o1Vstr = o1V == null ? "" : o1V.toString();
                String o2Vstr = o2V == null ? "" : o2V.toString();
                if (!o1Vstr.equals(o2Vstr)){
                    String desc = o1Vstr + " -> " + o2Vstr;
                    resMap.put(value , desc);
                }
            } catch (IllegalAccessException e) {
                log.error(e.getMessage(), e);
            }
        }
        return resMap;
    }
}