提供一个工具咧，通过@fieldmap标注来识别，把前端传过来的json，在@requestbody转的对象后，再转为Map对象

MapUtils.java

import com.google.common.base.CaseFormat;
import com.google.common.base.Preconditions;
import com.google.common.collect.Maps;

import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.Map;


/**
 * Created by lonly on 2018/6/26.
 */
public class MapUtils {

  private static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

  public static Map<String, Object> objTransformMap(Object object, List<String> skipStrs) throws Exception {
    Preconditions.checkNotNull(object, "object must not be null !");

    Map<String, Object> map = Maps.newHashMap();

    BeanInfo info = Introspector.getBeanInfo(object.getClass());
    for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
      Method reader = pd.getReadMethod();
      if (reader != null
          && (skipStrs == null || !skipStrs.contains(pd.getName()))
          && !pd.getName().equals("class")) {

        Object value = reader.invoke(object);
        value = value instanceof LocalDateTime ? ((LocalDateTime) value).format(DATE_TIME_FORMATTER) : value;
        if (value != null) {
          map.put(CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, pd.getName()), value);
        }
      }
    }
    return map;
  }
}