Java 适合任务的设计模式

数据库包含类型行：

TYPE1、TYPE2、type3、TYPEN

当用户向我的服务发送请求并等待响应时，我下一步：

1） 呼叫

responseService

获取响应：

@Override
public GetResponseResponse getResponse(GetResponseRequest request) 
       return responseService.getResponse(request);
}

@Override
@Transactional
public GetResponseResponse getResponse(GetResponseRequest request) {

    //get data from DB
    SmevMessage smevMessage = smevMessageService.findOneFinished(request.getP1(), request.getP2());

    //validate

    //create general response for all TYPES of response
     GetResponseResponse getResponseResponse = new GetResponseResponse();

    //get Builder for concrete resonse part
    UnpResponseBuilder unpResponseBuilder = unpResponseBuilderContext.getResponseBuilder(smevMessage.getRequestType());
    Element element = unpResponseBuilder.createResponse(smevMessage);

    //set part to general response
    getResponseResponse.setAny(element);

    return getResponseResponse;
}

2） 在

响应服务中

准备响应：

@Override
public GetResponseResponse getResponse(GetResponseRequest request) 
       return responseService.getResponse(request);
}

@Override
@Transactional
public GetResponseResponse getResponse(GetResponseRequest request) {

    //get data from DB
    SmevMessage smevMessage = smevMessageService.findOneFinished(request.getP1(), request.getP2());

    //validate

    //create general response for all TYPES of response
     GetResponseResponse getResponseResponse = new GetResponseResponse();

    //get Builder for concrete resonse part
    UnpResponseBuilder unpResponseBuilder = unpResponseBuilderContext.getResponseBuilder(smevMessage.getRequestType());
    Element element = unpResponseBuilder.createResponse(smevMessage);

    //set part to general response
    getResponseResponse.setAny(element);

    return getResponseResponse;
}

我生成一般响应，但每个响应都有针对每种类型的特定部分。为此，我使用策略设计模式

我对这个界面有一些实现：

public interface UnpResponseBuilder {
    Element createResponse(SmevMessage smevMessage);
}

和一个bean上下文：

public interface UnpResponseBuilderContext {
    UnpResponseBuilder getResponseBuilder(SmevMessageType smevMessageType);

    void setBuilder(SmevMessageType smevMessageType, UnpResponseBuilder bean);
}

---

我的问题：在这项任务中使用策略是否正确？还有别的可能吗？该策略是否适合

unposponsebuilder context

和

unposponsebuilder

的正确名称

public CreateResponseStrategy {
  public Element createResponse(SmevMessage smevMessage);
}

public FirstCreateResponseStrategy implements CreateResponseStrategy {
  public Element createResponse(SmevMessage smevMessage) {
  //logic
  }
}

public SecondCreateResponseStrategy implements CreateResponseStrategy {
  public Element createResponse(SmevMessage smevMessage) {
  //logic
  }
}

在随后的responseService课程中：

final ImmutableMap<String,CreateResponseStrategy> strategyMap = ImmutableMap.<String, CreateResponseStrategy>builder()
            .put("firstType", new FirstCreateResponseStrategy())
            .put("secondType",new SecondCreateResponseStrategy() )
            .build()

public GetResponseResponse getResponse(GetResponseRequest request) {

    //get data from DB
    SmevMessage smevMessage = smevMessageService.findOneFinished(request.getP1(), request.getP2());

    GetResponseResponse getResponseResponse = new GetResponseResponse();

    Element element = strategyMap.get(smevMessage.getRequestType()).createResponse(smevMessage); //additionaly check if element exists in map

    getResponseResponse.setAny(element);

    return getResponseResponse;
}

final ImmutableMap strategyMap=ImmutableMap.builder（）
.put（“firstType”，新的FirstCreateResponseStrategy（））
.put（“secondType”，新的SecondCreateResponseStrategy（））
.build（）
公共GetResponseGetResponse（GetResponseRequest请求）{
//从数据库获取数据
SmevMessage SmevMessage=smevMessageService.findonefished（request.getP1（），request.getP2（））；
GetResponseResponse GetResponseResponse=新建GetResponseResponse（）；
Element Element=strategyMap.get（smevMessage.getRequestType（））.createResponse（smevMessage）；//另外检查映射中是否存在元素
getResponseResponse.setAny（元素）；
返回getResponseResponse；
}

也许这种方法在你的情况下会更好。如果可以的话就告诉我