定义的实体类 import com.fasterxml.jackson.annotation.JsonProperty; private String MsgContent; public Alarm(int id, int alarmTime, int msgFrom, String msgContent, int msgType, int isSend, String def1) { public String toString() { ", AlarmTime=" + AlarmTime + ", MsgContent='" + MsgContent + '\'' + ", def1='" + def1 + '\'' + public void setId(int id) { public void setAlarmTime(int alarmTime) { public void setMsgFrom(int msgFrom) { public void setMsgContent(String msgContent) { public void...