Spring Cloud 微服务之间使用RestTemplate.postForEntity,服务端不的@RequestBody 不起作用？

2019-03-07 02:51:21 1.3k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

RuoYi后端HTTP请求实战：从502错误排查到RestTemplate/Feign/WebClient配置优化 HTTP请求是后端服务与外部API或内部微服务通信的核心技术，其底层基于TCP/IP协议，通过建立连接、发送请求报文、接收响应报文完成数据交换。理解其原理对于构建稳定、高性能的应用至关重要。在Java生态中，Spring框架提供了RestTemplate、WebClient和Feign等多种客户端实现，每种都有其适用的并发模型和配置策略。合理配置连接池、超时和重试机制，能显著提升系统弹性，避免因下游服务抖动导致的级联故障。特别是在处理类似502 Bad Gateway或422 Unprocessable E 阅读详情

作为客户端的微服务发送一个javaBean到服务端的微服务

客户端代码：
String ue_url = "http://localhost:8990/ue/add";

String jsonString = JSON.toJSONString(ueEngineeringData, SerializerFeature.PrettyFormat,
SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteDateUseDateFormat);

HttpEntity ue_entity = new HttpEntity(jsonString,headers);
//String jsonString = JSON.toJSONString(ueEngineeringData);
log.info("javaBean->json结果:" + ue_entity);
ResponseEntity<HashMap> ret = restTemplate_local.postForEntity(ue_url,ue_entity,HashMap.class);

调试结果：
2019-03-07 14:32:13.126 INFO 3020 --- [ Timer-0] c.p.n.task.EngineeringTimerTask : javaBean->json结果:<{
"id":0,
"latitudeXy":"20.0",
"longitudeXy":"20.0",
"ptEpc230UeCellLogicCellId":"",
"ptEpc230UeMacroEnbId":"",
"ueImsi":"34703030015800"
},{Content-Type=[application/json]}>
2019-03-07 14:32:13.131 INFO 3020 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)

服务端的代码：
@RequestMapping(value = "/add",method = RequestMethod.POST)
@ResponseBody
public HashMap<String, Object> addUe(@RequestBody UeEngineeringData ue) {
log.info("Add UE");
log.info("ue.imis:"+ ue.getUeImis());
log.info("UeController-add-ue.Longitude"+ue.getLongitude());
log.info("UeController-add:" + ue.toString());
return ueEngineeringDataService.addUe(ue);
}

控制台输出：
2019-03-07 14:32:13.139 INFO 3003 --- [io-8990-exec-10] c.p.n.controller.UeController : ue.imis:null
2019-03-07 14:32:13.139 INFO 3003 --- [io-8990-exec-10] c.p.n.controller.UeController : UeController-add-ue.Longitudenull
2019-03-07 14:32:13.140 INFO 3003 --- [io-8990-exec-10] c.p.n.controller.UeController : UeController-add:com.potevio.networkmonitoringdatabasecreatetables.domain.UeEngineeringData@4a2cd158
2019-03-07 14:32:13.140 INFO 3003 --- [io-8990-exec-10] c.p.n.service.UeEngineeringDataService : UeEngineeringData:imis:null
Hibernate: select ueengineer0_.id as id1_0_, ueengineer0_.latitude as latitude2_0_, ueengineer0_.longitude as longitud3_0_, ueengineer0_.pt_epc230ue_cell_logic_cell_id as pt_epc4_0_, ueengineer0_.pt_epc230ue_macro_enb_id as pt_epc5_0_, ueengineer0_.ue_imis as ue_imis6_0_ from ue_engineering_data ueengineer0_ where ueengineer0_.ue_imis is null

明明已经用阿里的fastJson转成Json发送过去了，为什么@RequestBody UeEngineeringData ue) 不起作用？它里边的内容都是空的！

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