SpringBoot使用责任链模式优化业务逻辑中的if-else代码

public interface Handler {
    void handleRequest(Request request);
}

public class ConcreteHandlerA implements Handler {
    private Handler nextHandler;
    public ConcreteHandlerA(Handler nextHandler) {
        this.nextHandler = nextHandler;
    }
    @Override
    public void handleRequest(Request request) {
        if (request.getCondition().equals("conditionA")) {
            // 处理条件A下的逻辑
        } else {
            // 将请求传递给下一个处理者
            nextHandler.handleRequest(request);
        }
    }
}
public class ConcreteHandlerB implements Handler {
    private Handler nextHandler;
    public ConcreteHandlerB(Handler nextHandler) {
        this.nextHandler = nextHandler;
    }
    @Override
    public void handleRequest(Request request) {
        if (request.getCondition().equals("conditionB")) {
            // 处理条件B下的逻辑
        } else {
            // 将请求传递给下一个处理者
            nextHandler.handleRequest(request);
        }
    }
}
// 其他具体处理类...

public class Request {
    private String condition;
    public Request(String condition) {
        this.condition = condition;
    }
    public String getCondition() {
        return condition;
    }
}

public class BusinessLogic {
    private Handler chain;
    public BusinessLogic(List<
Handler> handlers) {
        if (handlers == null || handlers.isEmpty()) {
            throw new IllegalArgumentException("Handler list must not be empty");
        }
        // 构建责任链
        for (int i = 0; i < handlers.size() - 1; i++) {
            Handler currentHandler = handlers.get(i);
            Handler nextHandler = handlers.get(i + 1);
            currentHandler.setNextHandler(nextHandler);
        }
        // 将最后一个处理者作为链条的尾部
        chain = handlers.get(0);
    }
    public void handleRequest(Request request) {
        chain.handleRequest(request);
    }
}