如何用动态值实例化构造函数并自动装配它？

Question

我在这里实例化了一个参数化构造函数，称为具有动态值的请求操作。如何@Autowire 这个到 Requestclass？随后，在 Request 类中，我创建了一个 new RatingResponse 如何也@Autowire？

类初始化器

public class Intializer
{ 
NewClass newclass = new NewClass();
String testName = Number + "_" + "Test"; -->getting the String number dynamically
Test test = new Test(testName); -> this is  a different class 

Operation operation = new RequestOperation(test, newclass  , 
                  sxxx, yyy, zzz); - argumented constructor
opertaion.perform();
}

请求类

public class RequestOperation implements Operation { 

// the constructor 
public RequestOperation(Test test, Sheet reportSheet, XElement element, TestDataManager testDataManager, Report report) 
{       
this.test = test;
this.newclass  = newclass  ;
this.sxxx= sxxx;
this.yyy= yyy;
this.zzz= zzz; 
    } 
    @Override   
public boolean perform(String CompanyName, String Province) {
Response response = new RatingResponse(this.test, this.reportSheet,
callService(this.buildRequest(CompanyName, Province)), this, this.report);-> create a new paramterizedconstructor
    } 

private String buildRequest(String CompanyName, String Province) { 
return pm.getAppProperties().getProperty(constructedValue); }
    }

**响应类**

    public class RatingResponse implements Response {
    public RatingResponse(Test test, Sheet reportSheet, Object obj, RequestOperation requestOperation, Report report) {
this.test = test;
if (obj instanceof Document) {
this.document = (Document) obj;
}
this.operation = requestOperation;
this.reportSheet = reportSheet;
this.report = report;
}

** 接口**

@Component
public interface Operation {    
    public boolean perform(String Name, String Province);
    }

@Component
public interface Response {

    void construct();

}

Answer 1

在 Spring Boot 中，您可以仅自动装配标有 @Bean 的类型或标有 @Component 的类或其派生类，如 @Service、@Controller

这些注解的特殊之处在于只有一个类的实例被保存在内存中。

因此，如果您的要求需要您为每组新动态值创建新类，那么自动装配它们不是正确的方法。

但是，如果您的类可以拥有的可能动态值数量有限，您可以像这样为它们中的每一个创建 bean

@Configuration
class MyBeans{

    @Bean
    public RatingResponse ratingResponse(){

        Response response = new RatingResponse(this.test, this.reportSheet,
        callService(this.buildRequest(CompanyName, Province)), this, this.report);
        return response
    }

}

那么在你需要用到的类中，你可以这样做

@Autowired 
RatingResponse ratingResponse