为什么rest接口返回json建议采用下划线形式,不要用驼峰

 <!-- fastjson start -->
 <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>fastjson</artifactId>
   <version>1.2.54</version>
 </dependency>
    <!-- fastjson end -->

  /**
 * 是否会员
 */
 @JSONField(name = "is_member")
 private String isMember;

  public static final char UNDERLINE = '_';
   /**
 * @Description 驼峰式转下划线
 */
public static String camelToUnderline(String param) {
 if (param == null || "".equals(param.trim())) {
  return "";
 }
 int len = param.length();
 StringBuilder sb = new StringBuilder(len);
 for (int i = 0; i < len; i++) {
  char c = param.charAt(i);
  if (Character.isUpperCase(c)) {
  sb.append(UNDERLINE);
  sb.append(Character.toLowerCase(c));
  } else {
  sb.append(c);
  }
 }
 return sb.toString();
 }

@Column 注解。
  @Column(name = "create_time")
  public Timestamp getCreateTime() {
    return createTime;
  }