Python实现通过插件的方式给指定用户发送广播消息和普通消息：

    代码示例如下：

import clr
clr.AddReference("mscorlib")
clr.AddReference("System")
clr.AddReference("System.Data")
clr.AddReference("Kingdee.BOS")
clr.AddReference("Kingdee.BOS.Core")
clr.AddReference("Kingdee.BOS.App")
clr.AddReference("Kingdee.K3.MFG.App")
clr.AddReference("Kingdee.K3.Core")
clr.AddReference("Kingdee.K3.MFG.Contracts")
clr.AddReference("Kingdee.BOS.ServiceHelper")
clr.AddReference("Kingdee.BOS.Workflow.Models")
clr.AddReference("Kingdee.BOS.OrmEngine")
clr.AddReference("Kingdee.BOS.DataEntity")
clr.AddReference("Newtonsoft.Json")

from System import *
from System.Data import *
from System.Collections.Generic import List as GList
from System.ComponentModel import * 
from Kingdee.BOS import *
from Kingdee.BOS.Core import *
from Kingdee.BOS.Core.Bill import *
from Kingdee.BOS.Core.DynamicForm.PlugIn import *
from Newtonsoft.Json import *
from Kingdee.BOS.Core.Bill.PlugIn import *
from Kingdee.BOS.Core.Bill.PlugIn.Args import *
from Kingdee.BOS.Core.DynamicForm.PlugIn.Args import *
from Kingdee.BOS.Core.Msg import *
from Kingdee.BOS.Orm.Drivers import *
from Kingdee.BOS.ServiceHelper import * 
from Kingdee.BOS.Workflow.Models.WindowRemind import *
from Kingdee.BOS.Resource import *

def OnPreparePropertys(e):
    e.FieldKeys.Add("FCreatorID")
    
def EndOperationTransaction(e):
    receiverIds = GList[object]()  #  接受人ID集合
    for dataEntitys in e.DataEntitys:
        creatorId = dataEntitys["CreatorId"]   #  单据创建人
        
        if len(receiverIds) > 0:
            formId = "PLN_FORECAST"   #  关联单据的FormID
            billId = 125385   # 需要打开的单据内码
            title = "新消息通知"   # 消息标题
            message = "你有信息消息，请查收！"  # 消息内容
            senderId = 16394   # 消息发送人ID
            # 发送广播信息
            SendBroadCastMessage(this.Context, message, receiverIds )
            # 发送普通消息
            SendMessage(this.Context, formId, billId, title, message, senderId , receiverIds )

            
### 发送广播消息
def SendBroadCastMessage(ctx, message, receiverIds):    
    businessInfo = FormMetaDataCache.GetCachedFormMetaData(ctx, "BAS_BROADCASTMSG").BusinessInfo
    dataType = businessInfo.GetDynamicObjectType()
    receiverField = businessInfo.GetField("FReceiver")
    dataObject = DynamicObject(dataType)
    dataObject["FCREATEDATE"] = DateTime.Now  # 创建时间
    dataObject["FTITLE"] = LocaleValue("你有新的消息")   # 广播标题
    dataObject["FCONTENT"] = str.Format("{0}（可在普通消息列表查看详情）", message)  # 广播内容
    dataObject["FCreatorId_Id"] = 16394   # 广播发布者
    dataObject["FSendType"] = 1   # 发送类型 1 - 单发 2 - 多发
    dataObject["FIsSendBroadcast"] = True   # 是否内部消息
    dataObject["FFailureTime"] = DateTime.Now.AddHours(1)   # 失效时间
    FieldSetValue(ctx, receiverField, dataObject, receiverIds)  # 接受人设置
    BusinessDataServiceHelper.Save(ctx, dataObject)            
 
### 发送普通消息
def SendMessage(ctx, formId, billId, title, content, senderId, receiverIds):
    businessInfo = FormMetaDataCache.GetCachedFormMetaData(ctx, "WF_MessageSendBill").BusinessInfo
    receiverField = businessInfo.GetField("FRECEIVERS")
    dataType = businessInfo.GetDynamicObjectType()
    dataObject = DynamicObject(dataType)
    dataObject["TYPE"] = str(MsgType.CommonMessage)  # 销售类别
    dataObject["SENDERID_Id"] = senderId   # 发送者
    FieldSetValue(ctx, receiverField, dataObject, receiverIds)  # 接受人设置
    dataObject["Title"] = title  # 消息标题
    dataObject["Content"] = content  # 消息内容
    dataObject["ObjectTypeId_Id"] = str(formId)  # 单据FORMID，用于打开单据
    dataObject["KeyValue"] = str(billId)   # 单据内码
    dataObject["CREATETIME"] = DateTime.Now     # 创建时间
    msgSend = MessageSend(obj=dataObject)
    msgSend.KeyValue = str(billId)
    SMSServiceHelper.SendMessage(ctx=ctx, msgSendInfo=msgSend, outboxToo=True)
 

 ### 多选基础资料字段赋值
def FieldSetValue(ctx, field, dataObject, pkValues):
    mulBaseDataEntitySet = field.GetFieldValue(dataObject)    
    if mulBaseDataEntitySet is None:
        mulBaseDataEntitySet = DynamicObjectCollection(field.RefEntityDynamicObjectType, dataObject)        
        field.RefEntityDynamicProperty.SetValue(dataObject, mulBaseDataEntitySet)   

    mulBaseDataEntitySet.Clear()

    baseDataObjects = BusinessDataServiceHelper.LoadFromCache(ctx=ctx, pkArray=pkValues, type=field.RefFormDynamicObjectType)   
    for baseDataObject in baseDataObjects:
        mulBaseDataEntity = DynamicObject(field.RefEntityDynamicObjectType)
        mulBaseDataEntitySet.Add(mulBaseDataEntity)
        field.RefIDDynamicProperty.SetValue(mulBaseDataEntity, baseDataObject[0])
        field.DynamicProperty.SetValue(mulBaseDataEntity, baseDataObject)