com.kasinf.framework.rest.eneity.converter.HashMapConverter Maven / Gradle / Ivy
package com.kasinf.framework.rest.eneity.converter;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.hibernate.HibernateException;
import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
import java.util.HashMap;
import java.util.Map;
/**
* JPA 2.1属性转换器，将HashMap转换成json存储到数据库
*
* 键的类型只能是String
*
* @author lkhsh
*/
@Converter
public class HashMapConverter implements AttributeConverter {
@Override
public String convertToDatabaseColumn(HashMap attribute) {
return MapUtil.isEmpty(attribute) ? "" : JSONObject.toJSONString(attribute, SerializerFeature.WriteClassName);
}
@Override
@SuppressWarnings("unchecked")
public HashMap convertToEntityAttribute(String dbData) {
if (!StrUtil.isEmpty(dbData)) {
HashMap result = new HashMap();
Map map = JSONObject.parseObject(dbData);
try {
for (Object key : map.keySet()) {
Object value = map.get(key);
result.put(key, value);
}
return result;
} catch (Exception e) {
throw new HibernateException(e);
}
}
return null;
}
}