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场景：

• json大体格式一致，但是 ext_info 扩展字段对象，场景不同字段不同
• 根据某字段类型,不同值，对应不同实现的 Component，处理不同场景
• 这里根据 event，来做不同处理

{"data": {"event": "eventWoMan","event_id": "123","ext_info": {"dist_sex": "女","dist_height": "162"},"target_name": "美女类型json"},"seq": 0
}{"data": {"event": "eventWoMan","event_id": "123","ext_info": {"dist_name": "小树","dist_age": "18"},"target_name": "帅哥类型json"},"seq": 0
}

接收类：

@lombok.Data
public class BusinessMsg<T> {private T data;private int seq;}

import com.fasterxml.jackson.annotation.JsonProperty;@lombok.Data
public class MsgData<T> {private String event;@JsonProperty("event_id")private String eventId;@JsonProperty("ext_info")private T extInfo;@JsonProperty("target_name")private String targetName;}

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;@Data
public class ExtInfoMan {/*** 目标姓名*/@JsonProperty("dist_name")private String distName;/*** 目标年龄*/@JsonProperty("dist_age")private String distAge;}

@Data
public class ExtInfoWoMan {/*** 目标性别*/@JsonProperty("dist_sex")private String distSex;/*** 目标高度*/@JsonProperty("dist_height")private String distHeight;}

处理service：

public interface JsonTService {/*** 预处理消息* @param businessMsg*/String handlerMsg(BusinessMsg<MsgData<JsonNode>> businessMsg);}

@Service("eventMan")
public class JsonManServiceImpl implements JsonTService {@Resourceprivate ObjectMapper objectMapper;@SneakyThrows@Overridepublic String handlerMsg(BusinessMsg<MsgData<JsonNode>> businessMsg) {JsonNode extInfo = businessMsg.getData().getExtInfo();ExtInfoMan exitInfo = objectMapper.treeToValue(extInfo, ExtInfoMan.class);return exitInfo.toString();}
}

@Service("eventWoMan")
public class JsonWoManServiceImpl implements JsonTService {@Resourceprivate ObjectMapper objectMapper;@SneakyThrows@Overridepublic String handlerMsg(BusinessMsg<MsgData<JsonNode>> businessMsg) {JsonNode extInfo = businessMsg.getData().getExtInfo();ExtInfoWoMan extInfoWoMan = objectMapper.treeToValue(extInfo, ExtInfoWoMan.class);return extInfoWoMan.toString();}
}

策略处理

import com.service.JsonTService;
import org.springframework.stereotype.Service;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;/*** @author xiaoshu*/
@Service
public class JsonStrategyContext {private final Map<String, JsonTService> orderStrategyMap = new ConcurrentHashMap<>();public JsonStrategyContext(Map<String, JsonTService> strategyMap) {this.orderStrategyMap.putAll(strategyMap);}public JsonTService getResource(String event){return orderStrategyMap.get(event);}
}

实际接口接收：

	@Resourceprivate JsonStrategyContext jsonStrategyContext;@ApiOperation(value = "泛型处理，同格式json，扩展字段不一")@PostMapping("/revice")public String revice(@RequestBody BusinessMsg<MsgData<JsonNode>> businessMsg){String event = businessMsg.getData().getEvent();return jsonStrategyContext.getResource(event).handlerMsg(businessMsg);}