Springboot整合策略模式详解

/**
 * 四季策略
 * @author wangzhenjun
 * @date 2022/12/1 9:30
 */
public interface SeasonsStrategy {

    /**
     * 根据季节去执行不同的方案
     * @param seasons
     * @return
     */
    String execute(String seasons);
}

/**
 * 春季具体实现
 * @author wangzhenjun
 * @date 2022/12/1 9:34
 */
// 指定容器的名称，不指定默认为类名称首字母小写
@Component("spring")
public class SpringStrategy implements SeasonsStrategy{
    @Override
    public String execute(String seasons) {

        return seasons + "来了！我们一起去放风筝吧！";
    }
}

/**
 * 夏季具体实现
 * @author wangzhenjun
 * @date 2022/12/1 9:34
 */
// 指定容器的名称，不指定默认为类名称首字母小写
@Component("summer")
public class SummerStrategy implements SeasonsStrategy{
    @Override
    public String execute(String seasons) {

        return seasons + "来了！我们一起去游泳吧！";
    }
}

/**
 * 秋季具体实现
 * @author wangzhenjun
 * @date 2022/12/1 9:34
 */
// 指定容器的名称，不指定默认为类名称首字母小写
@Component("autumn")
public class AutumnStrategy implements SeasonsStrategy{
    @Override
    public String execute(String seasons) {

        return seasons + "来了！我们一起去放看枫叶吧！";
    }
}

/**
 * 冬季具体实现
 * @author wangzhenjun
 * @date 2022/12/1 9:34
 */
// 指定容器的名称，不指定默认为类名称首字母小写
@Component("winter")
public class WinterStrategy implements SeasonsStrategy{
    @Override
    public String execute(String seasons) {

        return seasons + "来了！我们一起去打雪仗吧！";
    }
}

/**
 * 环境或者上下文类，用于统一执行具体策略
 * @author wangzhenjun
 * @date 2022/12/1 9:56
 */
@Component
public class SeasonsFactory {
    /**
     * Spring会自动将Strategy接口的实现类注入到这个Map中，key为bean id，value值则为对应的策略实现类
     */
    @Autowired
    private Map<String, SeasonsStrategy> seasonsMap;

    /**
     * 处理四季统一入口方法
     * @param seasons
     * @param beanName
     * @return
     */
    public String handle(String seasons,String beanName){
    	// 根据bean的名称获取对应的算法处理类
        SeasonsStrategy seasonsStrategy = seasonsMap.get(beanName);
        String execute = seasonsStrategy.execute(seasons);
        return execute;
    }
}

@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {
	
    @Autowired
    private SeasonsFactory seasonsFactory;

    @GetMapping("/strategyTest/{seasons}/{beanName}")
    public Result strategyTest(@PathVariable("seasons") String seasons,@PathVariable("beanName") String beanName){
        String handle = seasonsFactory.handle(seasons, beanName);
        return Result.success(handle);
    }
}