Exception in thread "main" org.springframework.web.client.RestClientException: Could not write request: no suitable HttpMessageConverter found for request type [com.sopia.wxmp.entity.WxMes]

at org.springframework.web.client.RestTemplate$HttpEntityRequestCallback.doWithRequest(RestTemplate.java:666)

at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:482)

at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:447)

at org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:318)

at com.sopia.wxmp.action.SendMesUser.pushOneUser(SendMesUser.java:62)

at com.sopia.wxmp.action.SendMesUser.main(SendMesUser.java:32)

小程序包这个错是因为什么